tag:blogger.com,1999:blog-84086968886170767712012-01-27T17:14:02.957-08:00Networker's BLOGTrust in the LORD with all your heart
and lean not on your own understanding;
in all your ways acknowledge him,
and he will make your paths straight.Jeffnoreply@blogger.comBlogger1051100tag:blogger.com,1999:blog-8408696888617076771.post-67091658653749480372011-10-16T23:17:00.001-07:002011-10-16T23:17:23.463-07:00EVC - using untagged option1. Port Based - without utilizing any VLAN on the machine
NPE-01#sh running-config interface gigabitEthernet 9/5
interface GigabitEthernet9/5
description :To CE1
no ip address
service instance 10 ethernet
encapsulation untagged
xconnect 10.10.1.104 10 encapsulation mpls
!
end
NPE-01#sh mpls l2transport vc 10
Local intf Local circuit Dest address VC ID StatusJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-38578317311758472592011-07-11T23:38:00.000-07:002011-07-11T23:38:18.260-07:00FINALLY a CCIP!After 1.5 years i finally finished my CCIP.
Praise God for all the strenght and knowledge.Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-56084664195140478142011-07-11T23:33:00.000-07:002011-07-11T23:34:10.487-07:00Cleared QoS 642-642Cleared QoS, just in time for the exam. I was nearly late due to heavy rain but i came 5 minutes before my exam.Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-91717388799561107902011-06-28T20:08:00.000-07:002011-06-28T20:08:38.195-07:00Cleared 642-691Hallelujah! Just cleared BGP+MPLS exam.
Materials:
CBT Nuggest BGP
Student Guide Vol.1 and 2Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-22383535958240338602010-04-30T19:47:00.000-07:002010-04-30T19:48:30.458-07:00Maipu CertsSpend 2 weeks in Chengdu to get the MPNA and MPNE certification from MAIPU (CCNA and CCNP equivalent). I'll start BSMCN this may and hopefully get the exam on June.Jeffnoreply@blogger.com3tag:blogger.com,1999:blog-8408696888617076771.post-7642029406413407332010-03-15T01:34:00.000-07:002010-03-15T01:34:11.048-07:00Road to BSCI - PassGot my BSCI today and the result was good.
Preparations: ( Feb.1 - March 15, 2010)
- CBT Nuggets BSCI
- TCP/IP Volume 1
- PG 3.36
Next week will be switching.Jeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-7200405398527746922010-02-08T21:19:00.001-08:002010-02-08T21:19:28.489-08:00Road to BSCIJust finished reviewing EIGRP and OSPF. Next up is ISIS, still lagging due to workload.Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-81533610521270178562010-01-24T21:46:00.000-08:002010-03-15T01:30:25.164-07:00CCNA in a MONTH - PASSEDI finally finished my CCNA today.
Preparations: (Dec. 27, 2009 to Jan 25, 2010)
- CBT Nuggets ICND1 and ICND2
- Cisco CCNA Study Guide
At least 2 topics per day.
By next week I'll be preparing my review materials for BSCI or BGP/MPLS.Jeffnoreply@blogger.com2tag:blogger.com,1999:blog-8408696888617076771.post-27911448957040611402010-01-22T17:43:00.001-08:002010-01-22T17:43:57.164-08:00CCNA in a MONTHStarted reviewing this jan, exam is on monday. wish me luck.Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-50547612995813477862008-03-30T20:34:00.001-07:002008-03-30T20:34:53.171-07:00MS How To'sMS TUTORIALS How To: Create FTP ServerHow To: Change Proxy per User AccountHow To: Creating Policies using ADHow To: Create Users and GroupsHow To: Client join the DomainHow To: Installing Active Directory, Domain Contro...How To: Configuring DHCP ServerHow To: Installing DHCP Server Jeffnoreply@blogger.com7tag:blogger.com,1999:blog-8408696888617076771.post-14636625096262407602008-03-30T20:33:00.001-07:002008-03-30T20:33:31.400-07:00Linux How To'sTutorials How To: DHCP Server (1) How To: DHCP Server Logs (1) How To: MySQL Server Installation (1) How To: Apache Web Server (1) How To: Caching DNS (1) How To: IPTABLES Configuration (1) How To: IPTABLES Installation (1) How To: IPTABLES Scenario 1 (1) How To: IPTABLES Scenario 1.1 (1) How To: IPTABLES Scenario 2 (1) How To: IPTABLES Scenario 2.1 (1) How Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-91032839588987203442008-03-30T20:28:00.000-07:002008-03-30T20:32:40.012-07:00Network Tip No. 40: Show Available MemoryShow Used and Available Memory of your Cisco router or switch A router can be limited by its available memory. To show the used and available memory, Router#show proc mem At the beginning of the output, look for a line like this: Total: 200234528, Used: 70508188, Free: 129726340Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-67146162416467173112008-03-30T20:26:00.000-07:002008-03-30T20:31:25.880-07:00Network Tip No. 39: Show Processor LoadShow proccessor load of your router or switch,which can be limited by its processing power. To show the processor utilization,Router#show proc cpuAt the beginning of the output, look for a line like this:CPU utilization for five seconds: 37%/30%; one minute: 39%; five minutes: 40%Jeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-41792632264148760292008-03-30T20:18:00.000-07:002008-03-30T20:19:59.473-07:00Network Tip No. 38: CLI Editing TipsLearn the command-line editing keys.Control A Goes to the beginning of the lineControl E Goes to the end of the lineControl K Deletes everything to the right of the cursorControl P Recalls the previous command in the history bufferControl N Recalls the next command in the history bufferJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-9605688942583397212008-03-30T20:16:00.000-07:002008-03-30T20:20:39.140-07:00Network Tip No. 37: ACL on DNSNo browsing....A common access-list pitfall is when people forget to allow DNS (Domain Name Servers) from their internal network to the provider's DNS servers. Mainly this is a problem on home or small office routers where you might not have an internal DNS server running. The following command allows DNS access from your hosts to the outside DNS server. In this example, our outside DNS Jeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-45821160564252757602008-03-30T20:09:00.001-07:002008-03-30T20:10:53.295-07:00Network Tip No. 36: ACL on ICMPSome are having some problems on the ICMP access-list. Try this oneallow pings into the network access-list 110 permit icmp any any echo ! allow ping responses access-list 110 permit icmp any any echo-reply ! allow ICMP source-quench access-list 110 permit icmp any any source-quench ! allow path MTU discovery access-list 110 permit icmp any any packet-too-big ! allow time-exceededJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-90782068790218869622008-03-30T20:04:00.000-07:002008-03-30T20:08:26.888-07:00Network Tip No. 35: Stopping the router from crazy outputStopping the router from crazy output... An annoying problem output everytime you mistype a command and the router thinks you just typed a hostname. For example: Router#shwo Translating "shwo"...domain server (10.1.1.1) % Unknown command or computer name, or unable to find computer address Router# The way to handle this is to change the preferred transport method: ! Console port lineJeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-91766668352710450342008-03-30T19:58:00.000-07:002008-03-30T19:59:09.389-07:00Network Tip No. 34: The reload commandWhen everything fails.... hehe Router#reload in 3 Reload scheduled in 3 minutes Proceed with reload? [confirm]yJeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-77301758825500380772008-03-26T22:48:00.000-07:002008-03-26T23:00:31.034-07:00Linux Tip No. 36: How to Enable IP ForwardingEnable IP Forwarding1. Check if IP Forwarding is enabledUsing sysctl: [root@proxy ~]# sysctl net.ipv4.ip_forwardnet.ipv4.ip_forward = 0 or just checking out the value in the /proc system: [root@proxy ~]# cat /proc/sys/net/ipv4/ip_forward0 Value 0 means it is disabled. 2. Enable IP Forwarding on the fly [root@proxy ~]#sysctl -w net.ipv4.ip_forward=1 or [root@proxy ~]#echo 1 > /proc/sys/net/ipv4/Jeffnoreply@blogger.com8tag:blogger.com,1999:blog-8408696888617076771.post-66355397010398637502008-03-26T21:18:00.000-07:002008-03-26T21:20:54.221-07:00Linux Tip No. 35: Enable service at boot upTo Check:[root@jepoy ~]# chkconfig --list |grep httpdhttpd 0:off 1:off 2:on 3:on 4:on 5:on 6:offTo enable at boot up:[root@jepoy ~]# chkconfig httpd onJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-45547174123103482642008-03-26T21:14:00.000-07:002008-03-26T21:18:27.041-07:00Linux Tip No. 34: How to Check ServicesThis command is used to start/stop your services.service start/stop/restart/statusTo Start:[root@jepoy ~]# service httpd startTo Stop:[root@jepoy ~]# service httpd stopTo Restart:[root@jepoy ~]# service httpd restartTo check:[root@jepoy ~]# service httpd statusJeffnoreply@blogger.com3tag:blogger.com,1999:blog-8408696888617076771.post-88459611896649214402008-03-24T01:52:00.000-07:002008-03-24T01:53:08.314-07:00Linux Tip No. 33: How to check your DHCP serverThis command tells you what DHCP server you are using.[root@jepoy ~]# grep dhcp-server-identifier /var/lib/dhcp/dhclient.leases option dhcp-server-identifier 192.168.0.254;Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-85458940207762607452008-03-24T01:49:00.000-07:002008-03-24T01:50:30.253-07:00Linux Tip No. 32: Checking the top 10 directoriesTop 10 directories eating up your disk space:[root@mail etc]# du -cksh * | sort -rn | head -10852K sysconfig784K termcap704K selinux704K makedev.d632K firmware552K X11544K pam.d472K prelink.cache460K alsa444K postfixJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-62310095763051841302008-03-24T01:37:00.000-07:002008-03-24T01:41:41.548-07:00Linux Tip No. 31: Renew/Release DHCP client[root@proxy ~]# dhclient -r[root@proxy ~]# dhclientInternet Systems Consortium DHCP Client V3.0.2Copyright 2004 Internet Systems Consortium.All rights reserved.For info, please visit http://www.isc.org/products/DHCPThe -r flag explicitly releases the current lease, and once the lease has been released, the client exits.Jeffnoreply@blogger.com3tag:blogger.com,1999:blog-8408696888617076771.post-86405007026623164752008-03-23T20:18:00.001-07:002008-03-23T20:18:38.637-07:00Network Tip No. 33: Troubleshootin IGRPTroubleshooting IGRP Issues Router#debug ip igrp events Shows all IGRP events in real time Router#debug ip igrp transactions Shows IGRP updates between routersJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-77737661826492902162008-03-23T20:17:00.001-07:002008-03-23T20:17:43.264-07:00Network Tip No. 32: IGRP Routing Optional Commands IGRP Routing: Optional Commands Router(config)#no router igrp as-number Disables the IGRP routing process Router(config-router)#no network w.x.y.z Removes network w.x.y.z from the IGRP routing process Router(config-if)#bandwidth x Sets the bandwidth of this interface to x kilobits to allow IGRP to make a better routing decision Router(config-router)#variance x Allows Jeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-75415796642174658802008-03-23T20:14:00.000-07:002008-03-23T20:15:49.060-07:00Network Tip No. 31: IGRP Routing CommandsIGRP Routing: Mandatory Commands Router(config)#router igrp as-number Enables IGRP routing process. The autonomous system number (AS-number) used in the IGRP routing process must match all other routers that are going to share routing updates in order for communication to take place Router(config-router)#network w.x.y.z w.x.y.z is the network number of the directly connected Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-7084614572361940122008-03-23T20:09:00.000-07:002008-03-23T20:10:09.706-07:00MS How To'shttp://howtowindows.blogspot.com/Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-83272099314517575872008-03-23T20:07:00.000-07:002008-03-23T20:08:10.148-07:00Linux How To'shttp://howtonixnux.blogspot.com/Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-45416951427116739942008-03-18T18:39:00.000-07:002008-03-18T18:41:01.983-07:00Linux Tip No. 30: Managing Disk Space[root@mail ~]# fdisk -lDisk /dev/sda: 36.4 GB, 36419584000 bytes255 heads, 63 sectors/track, 4427 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sda1 * 1 63 506016 83 Linux/dev/sda2 64 3905 30860865 83 Linux/dev/sda3 3906 4427 4192965 82 Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-41911378372852350932008-03-18T18:33:00.000-07:002008-03-18T18:37:53.278-07:00Linux Tip No. 29: Becoming a Super UserBecoming Super User (The su Command)[docadmin@mail ~]$ suPassword: ******[root@mail docadmin]#When you are prompted, type in the root user's password. The prompt for the regular user ($) will be changed to the super user prompt (#). At this point, you have full permission to run any command and use any file on the system. However, one thing that the su command doesn't do when used this way is Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-6258298501127794542008-03-18T18:28:00.000-07:002008-03-18T18:30:30.357-07:00Linux Tip No. 28: Command-Line RecallCommand-Line Recall After you type a command line, that entire command line is saved in your shell's history list. The list is stored in a history file, from which any command can be recalled to run again. [docadmin@mail ~]$ history 20 526 exit 527 su - 528 cd /etc 529 more inittab 530 exit 531 su 532 lspcis 533 lspci 534 su 535 su - 536 su 537 su - 538 su - 539 su Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-83491529322538784392008-03-18T18:26:00.001-07:002008-03-18T18:27:27.374-07:00Network Tip No. 30: RIP Version 2: Optional Commands RIP Version 2: Optional Commands Router(config-router)#no version 2 Changes back to RIP-1 Router(config-router)#version 1 Changes RIP routing to RIP-1 Router(config-router)#no auto-summary RIP-2 summarizes networks at the classful boundary. This command turns autosummarization off Router(config-router)#auto-summary Re-enables autosummarization at the classful boundaryJeffnoreply@blogger.com15tag:blogger.com,1999:blog-8408696888617076771.post-21980244764034689702008-03-18T18:25:00.000-07:002008-03-18T18:26:07.158-07:00Network Tip No. 29: RIP Version 2: Mandatory CommandsRIP Version 2: Mandatory Commands Router(config)#router rip Turns on the RIP routing process; the same command as used for RIP Version 1 (RIP-1) Router(config-router)#version 2 Turns on Version 2 of the routing process. Version 1 is default Router(config-router)#network w.x.y.z w.x.y.z is the network number of the directly connected classful network you want to advertiseJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-31799825283851600312008-03-18T18:23:00.001-07:002008-03-18T18:23:58.485-07:00Network Tip No. 28: Troubleshooting RIP Issues Troubleshooting RIP Issues Router#debug ip rip Displays all RIP activity in real time Router#show ip rip database Displays contents of the RIP databaseJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-71721912325431700852008-03-18T18:20:00.000-07:002008-03-18T18:21:14.679-07:00Network Tip No. 27: RIP Version 2RIP Version 2 Router(config-router)#version 2 RIP will now send and receive RIP-2 packets globally Router(config-if)#ip rip send version 1 Interface will send only RIP-1 packets Router(config-if)#ip rip send version 2 Interface will send only RIP-2 packets Router(config-if)#ip rip send version 1 2 Interface will send both RIP-1 and RIP-2 packets Router(config-if)#ip ripJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-74223888273777047062008-03-18T18:16:00.000-07:002008-03-18T18:17:46.940-07:00Linux Tip No. 27: Exiting the ShellExiting the Shell To exit the shell when you are done, type exit or press Ctrl+D.[jepoy@mail ~]$ exitexitThere are stopped jobs.Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-6741556843002260742008-03-18T17:59:00.000-07:002008-03-18T18:11:09.511-07:00Linux Tip No. 26: Checking DirectoriesTo find out what your current directory is, type the pwd command: $ pwd/usr/binTo find out the name of your home directory, type the echo command, followed by the $HOME variable: $ echo $HOME/home/jepoyTo change your directory, use the cd command. You could also use the tilde (~) character to indicate the home directory. So cd ~ would have the same resultas just cd. $ cd /var/log $ pwd /var/Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-12829688101502180192008-03-18T17:56:00.000-07:002008-03-18T17:57:46.931-07:00Linux Tip No. 25: Checking Your Login SessionTo find out information about your identity, use the id command as follows:[jepoy@mail docadmin]$ iduid=10023(jepoy) gid=10023(jepoy) groups=10023(jepoy)Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-4044086023157627572008-03-18T17:54:00.000-07:002008-03-18T17:55:00.853-07:00Network Tip No. 26: RIP Routing Optional CommandsRIP Routing: Optional Commands Router(config)#no router rip Turns off the RIP routing process Router(config-router)#no network w.x.y.z Removes network w.x.y.z from the RIP routing process Router(config-router)#passive-interface s0/0 RIP updates will not be sent out this interface Router(config-router)#neighbor a.b.c.d Defines a specific neighbor with which to exchange Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-76963834774238090312008-03-13T17:59:00.000-07:002008-03-13T18:02:30.615-07:00Linux Tip No. 24: How to check speed/duplex of your NICHow to determine the speed/negotiation of your NICa. dmesg[root@mail ~]# dmesg | grep -i duplextg3: eth1: Link is up at 100 Mbps, full duplex.b. ethtool[root@mail ~]# ethtool eth1Settings for eth1: Supported ports: [ MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/FullJeffnoreply@blogger.com10tag:blogger.com,1999:blog-8408696888617076771.post-9789558747235108252008-03-13T17:03:00.000-07:002008-03-13T17:04:56.505-07:00Network Tip No. 25: RIP Routing CommandsRIP Routing Commands Router(config)#router rip Enables RIP as a routing protocol Router(config-router)#network 192.168.10.0 192.168.10.0 is the network number of the directly connected network you want to advertise Note: You need to advertise only the classful network number, not a subnet:Router(config-router)#network 172.17.0.0 notRouter(config-router)#network 172.17.10.0 IfJeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-40412790861835277052008-03-12T01:11:00.000-07:002008-03-12T01:12:17.981-07:00Network Tip No. 24: IP ClasslessIP Classless Router(config)#ip classless Instructs IOS to forward packets destined for an unknown subnet to the best supernet route Router(config)#no ip classless Turns off the ip classless commandJeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-72393130334844110872008-03-12T00:51:00.000-07:002008-03-12T00:52:58.133-07:00Linux Tip No. 23: How to check your NICHow to check your NIC[root@mail docadmin]# /sbin/lspci |grep -i eth00:04.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5702X Gigabit Ethernet (rev 02)02:01.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 08)Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-37833604966869006732008-03-11T18:43:00.001-07:002008-03-11T19:18:43.908-07:00Network Tip No. 23: Verifying Static RoutesVerifying Static Routes Router#show ip route Displays contents of IP routing tableJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-29510197546627930142008-03-06T23:37:00.000-08:002008-03-06T23:38:46.592-08:00Network Tip No. 22: Static Routing-Permanent OptionThe permanent Keyword (Optional) Router(config)#ip route 172.16.20.0 255.255.255.0 172.16.10.2 permanent Specifies that the route will not be removed, even if the interface shuts downJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-32368277039382539722008-03-06T23:35:00.000-08:002008-03-06T23:37:10.032-08:00Network Tip No. 21: Static RoutingStatic Routing Router(config)#ip route 172.16.20.0 255.255.255.0 172.16.10.2 172.16.20.0 = destination network 255.255.255.0 = subnet mask 172.16.10.2 = next-hop address Read this to say: To get to the destination network of 172.16.20.0, with a subnet mask of 255.255.255.0, send all packets to 172.16.10.2 Router(config)#ip route 172.16.20.0 255.255.255.0 s0/0 172.16.20.0 = Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-88093025963092762282008-03-06T23:26:00.000-08:002008-03-06T23:27:55.195-08:00Network Tip No. 20: Default Routing Default Routing Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.10.2 Send all packets destined for networks not in my routing table to 192.168.10.2 Router(config)#ip route 0.0.0.0 0.0.0.0 s0/0 Send all packets destined for networks not in my routing table out my Serial 0/0 interfaceJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-15798136018320120222008-03-06T16:59:00.001-08:002008-03-06T16:59:45.485-08:00Linux Tip No. 22: How to check your sound card[root@proxy /]# arecord -l**** List of CAPTURE Hardware Devices ****card 0: AudioPCI [Ensoniq AudioPCI], device 0: ES1371/1 [ES1371 DAC2/ADC] Subdevices: 1/1 Subdevice #0: subdevice #0[root@proxy /]#Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-44662628269116602102008-03-06T16:00:00.000-08:002008-03-06T16:01:24.902-08:00Network Tip No. 19: Erasing Configurations Erasing Configurations Router#erase start Deletes the startup-config file from NVRAMJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-63280705330843168532008-03-06T00:43:00.000-08:002008-03-06T01:06:32.631-08:00Network Tip No. 18: Saving configurations Saving Configurations Router#copy run start Saves the running-config to local NVRAM Router#copy run tftp Saves the running-config remotely to TFTP serverJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-7770827793152578612008-03-05T18:20:00.000-08:002008-03-05T18:33:38.424-08:00Linux Tip No. 21: How to check your video carda. Check the graphics card[root@mail docadmin]# /sbin/lspci |grep -i vga00:03.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)b. Check the video card memory size[root@mail docadmin]# /sbin/lspci -v -s 00:03.000:03.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) (prog-if 00 [VGA]) Subsystem: Compaq Computer Corporation: Unknown device 001e Flags: bus Jeffnoreply@blogger.com2tag:blogger.com,1999:blog-8408696888617076771.post-91514460833852354362008-03-05T15:53:00.000-08:002008-03-05T15:54:35.315-08:00Network Tip No. 17: exec-timeoutexec-timeout Command Router(config)#line con 0 Router(config-line)#exec-timeout 0 0 Sets time limit when console automatically logs off. Set to 0 0 (minutes seconds) means console never logs off Router(config-line)# Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-7408501658034184982008-03-04T16:43:00.001-08:002008-03-04T16:43:46.178-08:00Network Tip No. 16: logging synchronous logging synchronous Command Router(config)#line con 0 Router(config-line)#logging synchronous Turns on synchronous logging. Information items sent to console will not interrupt the command you are typing. The command will be moved to a new lineJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-50452157451899823072008-03-03T00:00:00.001-08:002008-03-03T00:00:54.426-08:00Network Tip No. 15: no ip domain-lookupno ip domain-lookup Command Router(config)#no ip domain-lookupRouter(config)# Turns off trying to automatically resolve an unrecognized command to a local host nameJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-3109596425634046502008-03-02T22:14:00.001-08:002008-03-03T00:01:23.073-08:00Network Tip No. 14: Assigning a Local Hostname to IP AddressAssigning a Local Host Name to an IP Address Router(config)#ip host marbea 192.1.1.1 Assigns a host name to the IP address. Router#ping marbea = Router#ping 192.1.1.1 Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-8377478957662881692008-03-02T16:02:00.000-08:002008-03-03T00:02:10.779-08:00Network Tip No. 13: Creating a BannerCreating an MOTD Banner Router(config)#banner motd # This is a secure system. Authorized Personnel Only! #Router(config)# # is known as a delimiting character.Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-79786846366579246332008-02-29T00:14:00.000-08:002008-03-03T00:03:11.966-08:00Network Tip No. 12: Configuring an Ethernet/Fast Ethernet InterfaceConfiguring an Ethernet/Fast Ethernet Interface Router(config)#int fa0/0 Moves to Fast Ethernet 0/0 interface mode Router(config-if)#description Sales LAN Optional descriptor of the link is locally significant Router(config-if)#ip address 192.168.0.1 255.255.255.0 Assigns address and subnet mask to interface Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-3569420135228640822008-02-28T15:59:00.000-08:002008-02-28T16:01:00.887-08:00Network Tip No. 11: Configuring a Serial Interface Configuring a Serial Interface Router(config)#int s0/0 Moves to interface Serial 0/0 mode Router(config-if)#description Link to ISP Optional descriptor of the link is locally significant Router(config-if)#ip address 192.168.10.1 255.255.255.0 Assigns address and subnet mask to interface Router(config-if)#clock rate 56000 Assigns a clock rate for the interface Router(Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-82697884518985741812008-02-28T00:18:00.000-08:002008-02-28T00:19:26.615-08:00Network Tip No. 10: Moving Between Interfaces Moving Between Interfaces Router(config)#int s0 Router(config)#int s0 Moves to interface S0 mode Router(config-if)#exit Router(config-if)#int e0 In int S0, move to E0 Router(config)#int e0 Router(config-if)# In E0 mode now Router(config-if)# Prompt does not change; be careful Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-77509260835198977522008-02-27T00:50:00.000-08:002008-02-27T00:53:27.126-08:00Network Tip No. 9: show Commands show Commands Router#show ? Lists all show commands available Router#show interfaces Displays statistics for all interfaces Router#show interface serial 0 Displays statistics for a specific interface, in this case Serial 0 Router#show ip interface brief Displays a summary of all interfaces, including status and IP address assigned Router#show controllers serial 0Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-82861809197063682022008-02-26T16:06:00.001-08:002008-02-26T16:06:42.878-08:00Network Tip No. 8: Password EncryptionPassword EncryptionRouter(config)#service password-encryptionApplies a weak encryption to passwordsRouter(config)#enable password ciscoSets enable password to ciscoRouter(config)#line con 0...Router(config-line)#password CiscoContinue setting passwords as above ...Router(config)#no service password-encryptionTurns off password encryptionJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-38228155390939008552008-02-26T00:14:00.000-08:002008-02-26T16:06:56.066-08:00Network Tip No. 7: Configuring your PasswordsConfiguring PasswordsWorks on both routers and switches.Router(config)#enable password jepoySets enable passwordRouter(config)#enable secret secret-jepoySets enable secret passwordRouter(config)#line con 0Router(config-line)#password consoleRouter(config-line)#loginEnters console-line modeSets console-line mode password to consoleEnables password checking at loginRouter(config)#line vty 0 4RouterJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-37461805910179628072008-02-25T16:41:00.000-08:002008-02-25T16:51:52.051-08:00Network Tip No. 6: Configuring a Router Name Configuring a Router Name This command works on both routers and switches. Router(config)#hostname jepoy Name can be any word you choose jepoy(config)# Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-89276360932555557322008-02-22T00:55:00.000-08:002008-02-22T00:56:02.609-08:00Network Tip No. 5: disable Command disable Command Router#disableRouter> Moves you from privileged mode back to user modeJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-23443607285928476612008-02-21T16:58:00.000-08:002008-02-21T17:01:24.205-08:00Network Tip No. 4: exit Command exit Command Router#exit or Router>exit Logs a user off Router(config-if)#exitRouter (config)# Moves you back one level Router(config)#exitRouter# Moves you back one levelJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-51536224259957509212008-02-21T00:22:00.000-08:002008-02-21T00:24:24.841-08:00Network Tip No.3: Global Configuration Mode Router> Limited viewing of config cannot make changes in this mode. Router# Can see config and move to make changes Router#(config) tRouter(config)# Moves to global config mode. This prompt indicates that you can start making changesJeffnoreply@blogger.com1tag:blogger.com,1999:blog-8408696888617076771.post-44422341532869815772008-02-20T15:59:00.000-08:002008-02-20T16:00:33.723-08:00Network Tip No.2: Enable Commandenable Command Router>enableRouter# Moves user from user mode to privileged modeJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-69248896112696951822008-02-19T17:13:00.000-08:002008-02-20T16:05:17.849-08:00Linux Tip No. 20: Change your Default Gateway How to Change Your Default Gateway Temporary[root@jepoy /]# route add default gw 192.168.1.1 eth0PermanentConfig file: /etc/sysconfig/network NETWORKING=yesHOSTNAME=jepoyGATEWAY=192.168.1.1Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-47961851700409187832008-02-18T15:55:00.000-08:002008-02-20T16:05:29.056-08:00Linux Tip No. 19: View your routing table[root@proxy ~]# netstat -nrKernel IP routing tableDestination Gateway Genmask Flags MSS Window irtt Iface203.189.11.64 0.0.0.0 255.255.255.224 U 0 0 0 eth0192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth10.0.0.0 203.189.11.65 0.0.0.0Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-28679005552684921062008-02-17T16:03:00.000-08:002008-02-20T16:05:40.807-08:00Linux Tip No. 18: Restart Network Service[root@proxy docadmin]# /sbin/service network restartShutting down interface eth0: [ OK ]Shutting down interface eth1: [ OK ]Shutting down loopback interface: [ OK ]Disabling IPv4 packet forwarding: net.ipv4.ip_forward = 0[ OK ]Bringing up loopback interface: [ OK ]Bringing up interface eth0: [ OK ]Bringing up interface eth1: [ OK ]Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-43241934104365396372008-02-14T15:57:00.000-08:002008-02-20T16:05:51.324-08:00Linux Tip No. 17: Enable/Disable interface[root@jepoy]# ifdown eth0[root@jepoy]# ifup eth0Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-61624803281761314772008-02-13T16:00:00.000-08:002008-02-20T16:06:02.070-08:00Linux Tip No. 16 IP Address Aliasing - PermanentIP Address Aliasing - PermanentEdit you config fileConfig file: /etc/sysconfig/network-scripts/ifcfg-eth0:0 DEVICE=eth0:0ONBOOT=yesBOOTPROTO=staticBROADCAST=192.168.10.255IPADDR=192.168.10.12NETMASK=255.255.255.0NETWORK=192.168.10.0ONBOOT=yes Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-8075333101064709482008-02-12T16:23:00.000-08:002008-02-20T16:06:14.952-08:00Linux Tip No.15: IP Address Aliasing - TemporaryNetwork IP aliasing ifconfig eth0 XXX.XXX.XXX.XXX netmask 255.255.255.0 broadcast XXX.XXX.XXX.255 route add -host XXX.XXX.XXX.XXX dev eth0 ifconfig eth0:0 192.168.10.12 netmask 255.255.255.0 broadcast 192.168.10.255 ifconfig eth0:1 192.168.10.14 netmask 255.255.255.0 broadcast 192.168.10.255 route add -host 192.168.10.12 dev eth0 route add -host 192.168.10.14 dev eth0 Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-8685685397962151822008-02-11T16:41:00.000-08:002008-02-20T16:06:27.021-08:00Linux Tip No.14: Locally resolve hosts Locally resolve hosts File: /etc/hosts [root@proxy etc]# more hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost 203.189.xxx.xxx proxy.jepoy.net 192.168.0.254 proxy 192.168.0.36 winxp [root@proxy etc]# ping winxp PING winxp (192.168.0.36) 56(84) bytes of data. [Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-88115623053031630882008-02-10T17:01:00.000-08:002008-02-20T16:06:37.791-08:00Linux Tip No.13: Setting your resolverSetting your resolver – DNS Entries File: /etc/resolv.conf search name-of-domain.com - Name of your domain or ISP's domain if using their name server nameserver XXX.XXX.XXX.XXX - IP address of primary name server nameserver XXX.XXX.XXX.XXX - IP address of secondary name server Example: search jepoy.net nameserver 203.189.xxx.xxx nameserver 203.189.xxx.xxxJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-70188138751536115372008-02-07T18:19:00.000-08:002008-02-20T16:06:48.646-08:00Linux Tip No. 12: DHCP client configurationDHCP client configuration/etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=eth0ONBOOT=yesBOOTPROTO=dhcpJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-10618491770069343152008-02-05T16:41:00.000-08:002008-02-20T16:04:59.875-08:00Linux Tip No. 11: Changing your IP Address - PermanentChanging your IP Address – Permanent Files: /etc/sysconfig/network-scripts/ [root@proxy network-scripts]# ls -l total 360 -rw-r--r-- 3 root root 190 Feb 28 2007 ifcfg-eth0 -rw-r--r-- 3 root root 191 Nov 8 2005 ifcfg-eth1 -rw-r--r-- 1 root root 254 Jun 21 2001 ifcfg-loPattern: DEVICE=eth0/eth1/eth3ONBOOT=yes/noBOOTPROTO=static/noneIPADDR=xxx.xxx.xxx.xxxNETMASK=Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-84143907096987844892008-02-04T17:55:00.000-08:002008-02-20T16:07:02.097-08:00Linux Tip No. 10: Changing your IP Address - TemporaryChanging your IP Address - Temporary Syntax: Ifconfig netmask [root@bigboy tmp]# ifconfig eth0 10.0.0.1 netmask 255.255.255.0 up The ifconfig command does NOT store this information permanently. Upon reboot this information is lost. (Manually add the commands to the end of the file /etc/rc.d/rc.local to execute them upon boot.)Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-60814680771827142008-01-31T17:49:00.000-08:002008-02-20T16:07:12.817-08:00Linux Tip No. 9: Setting your hostnameSetting your hostname File: /etc/sysconfig/network [root@proxy sysconfig]# more network NETWORKING=yes HOSTNAME=localhost.localdomain Example:Edit the file [root@proxy docadmin]# cat /etc/sysconfig/network NETWORKING=yes HOSTNAME=proxy.jepoy.net [root@proxy docadmin]# /sbin/service network restartShutting down interface eth0: [ OK ]Shutting down interface eth1: [ OK ]Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-20930249440458553172008-01-15T17:06:00.000-08:002008-02-20T16:07:24.671-08:00Linux Tip No. 8: Tcpdump to capture trafficUsing tcpdump to capture the traffic[root@proxy /]# /usr/sbin/tcpdump -i eth0 port 80tcpdump: verbose output suppressed, use -v or -vv for full protocol decodelistening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes09:17:49.575590 IP proxy.jepoy.ph.56790 > nxdomain.guide.opendns.com.http: S 583111147:583111147(0) win 5840 09:17:49.755526 IP nxdomain.guide.opendns.com.http > Jeffnoreply@blogger.com3tag:blogger.com,1999:blog-8408696888617076771.post-29531622098571922432008-01-07T23:12:00.000-08:002008-02-20T16:07:35.072-08:00Linux Tip No. 7: Print System Infouname - print system infoExample:[admin@proxy ~]$ uname -aLinux proxy 2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT 2005 i686 i686 i386 GNU/LinuxJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-49163642324734207422008-01-06T16:22:00.000-08:002008-02-20T16:07:45.404-08:00Linux Tip No. 6: Creating a Logical LinkCreate a File as a Logical Link to Another File[root@mail admin]#ln -s existingFile newFileExample:Link the maillog to your home directory[root@mail admin]#ln -fs /var/log/maillog .[root@mail admin]#ls -allrwxrwxrwx 1 root root 16 Jan 7 14:48 maillog -> /var/log/maillogJeffnoreply@blogger.com37tag:blogger.com,1999:blog-8408696888617076771.post-7010148064262157452008-01-02T17:09:00.000-08:002008-02-20T16:04:47.857-08:00Linux Tip No. 5: Determining the uptime[root@mail admin]# uptime10:45:52 up 89 days, 10:26, 1 user, load average: 0.00, 0.02, 0.00Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-29271655576122282312007-12-26T18:34:00.000-08:002008-02-20T16:04:31.998-08:00Linux Tip No. 4: Sorting the Biggest DirectoryThis command will show the biggest directory.[root@nuxmachine admin]# du -Sh | sort -n4.0K ./backup9.8M ./backup/web11G ./backup/home16K ./.ssh28K ./backup/Dovecot28K ./backup/users/last-full36K .36K ./backup/users40K ./backup-sh328K ./backup/Postfix628K ./backup/MailScannerJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-5229118943269689992007-12-17T18:06:00.000-08:002008-02-20T16:04:16.295-08:00Linux Tip No. 3: How to Check NIC Settings in Tru64How to Check NIC Speed and Negotiation#hwmgr get attr -cat network | grep -E "name|speed|duplex"Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-23649910269554794002007-12-13T18:25:00.000-08:002008-02-20T16:03:58.233-08:00Linux Tip No. 2: Combining Tail and Awk- you can use this command to provide a nice output of logs.Command:>tail -f logs.log | grep -e "word" | awk '{ print $12 "\t" $13' }'"word" - any line containing "word" will be captured$12 - column 12"\t" - spaceJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-33771961265152292672007-12-11T17:23:00.001-08:002007-12-13T18:48:13.049-08:00How To: Foward Tape Content in Tru64How To: Forward Tape Content in Tru64root@machine01:/home/data/backup/databases# mt fsf 1 root@machine01:/home/data/backup/databases# vrestore -t -f /dev/ntape/tape0vrestore: Date of the vdump save-set: Mon Nov 5 22:22:07 2007vrestore: Save-set source directory : /home/data/backup/vrestore: Target directory : /usr1/data/backup/Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-72498061512683581952007-12-04T22:15:00.001-08:002007-12-04T22:15:42.318-08:00Devices on AIXDevices on AIXDevices Information on AIX1.List all devices on a systemlsdevDevice states are: Undefined; Supported Device, Defined; Not usable(once seen), Available; Usable2.List all disk devices on a system (Some other devices are: adapter,driver, logical volume, processor)lsdev -Cc disk3.List all customized (existing) device classes (-P for complete list)lsdev -C -r class4.Remove hdisk5rmdev -Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-20148493146271730082007-12-03T23:02:00.000-08:002008-02-13T23:46:13.977-08:00Router: Traffic ShapingTraffic Shapingclass-map match-any IB-11.70match access-group name IB-11.70!class-map match-any OB-11.70match access-group name OB-11.70!!policy-map To-Publicclass OB-11.70 shape average 256000!policy-map To-Lanclass IB-11.70 shape average 256000!!interface FastEthernet0description ***LAN side***ip address 20.18.11.65 255.255.255.224service-policy output To-Lanspeed auto!interface Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-45483137235026715662007-12-03T17:42:00.000-08:002008-03-06T23:31:02.240-08:00Linux Tip No. 1: Change TimezoneChange Timezone on AIXchtz (timezone eg GMT0BST) - Changes the timezone in /etc/environment fileJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-57113403740919174182007-11-29T17:06:00.000-08:002008-02-13T23:43:41.873-08:00Router: NAT with DHCPip dhcp excluded-address 192.168.0.1 192.168.0.127!ip dhcp pool LANDHCP network 192.168.0.0 255.255.255.0 domain-name jefferson.com dns-server 20.18.11.34 netbios-name-server 20.18.11.34 default-router 192.168.0.1! interface Ethernet0/0description **** To Public Interace Fa0/1 ****ip address 20.18.10.2 255.255.255.252ip nat outsideip virtual-reassemblyfull-duplex!interface Ethernet1/Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-26757123954043259482007-11-28T23:48:00.000-08:002008-02-13T23:44:41.214-08:00Router: NAT with Secondary IP Addressinterface Ethernet0/0description **** To Public Address ****ip address 20.18.10.2 255.255.255.252ip nat outsideip virtual-reassemblyfull-duplex!interface Ethernet1/0description ***Connection To LAN ***ip address 192.168.0.1 255.255.255.0 secondaryip address 20.18.10.129 255.255.255.128ip nat insideip virtual-reassemblyfull-duplexip route 0.0.0.0 0.0.0.0 20.18.10.1!ip nat inside source list 10 Jeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-44860192976275885832007-11-19T17:32:00.000-08:002007-12-13T18:45:23.235-08:00Tape Commands in AIXUseful Tape commands in AIX1.Rewind and eject the rmt0 tape drive# tctl -f /dev/rmt0 offline2.Rewind the rmt0 tape drive# mt -f /dev/rmt0 rewind3.Check the content of the tape#tctl -f /dev/rmt0.1 -b 1024 -n readJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-1024119056021484542007-11-19T17:15:00.000-08:002007-12-13T18:45:52.772-08:00Tape Commands in Tru64*****************************Useful Tape Commands in Tru64*****************************Rewind and unload the tapemt -t /dev/ntape/tape0 offline 1. rewind the tape#mt -f /dev/ntape/tape0 rewindor#mt rewind2. check the content#vrestore -t -f /de/ntape/tape03. for interactive resotre#vrestore -iadd - add the filerestore -restore the file4. for manual restore Example: restore jeff02.backup.log file Jeffnoreply@blogger.com2tag:blogger.com,1999:blog-8408696888617076771.post-25509942755436340652007-11-05T19:47:00.000-08:002007-12-02T16:58:45.344-08:00AIX as NTP ClientAIX as NTP ClientOn machine that will be the client:1. In file /etc/ntp.confAdd:server preferdriftfile /etc/ntp.drifttracefile /etc/ntp.trace2. Issue command:ntpdate NOTE:If it doesn't say "No server suitable for synchronization found" proceedto next step.3. Start using:#smitty xntpd -> Start at both system restart and nowor#startsrc -s xntpdand uncomment the line in /etc/rc.tcpipstart /usr/sbinJeffnoreply@blogger.com3tag:blogger.com,1999:blog-8408696888617076771.post-20051469971818645182007-10-25T00:27:00.001-07:002007-12-02T16:59:51.674-08:00NTP on UNIXTru64NTP InformationNTP Version1-ntpd daemon2-xntpd3-xntpdSYSMAN# /usr/bin/sysman ntp_config# ntpq -p remote refid st t when poll reach delay offset jitter===================================================================== LOCAL(0) LOCAL(0) 3 l 9 64 377 0.000 0.000 0.000*xyzabc.ethz. .DCFa. 1 u 17 64 377 25.088 -10.040 1.071 % xntpdc -p remoteJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-90467410795873814442007-10-25T00:04:00.000-07:002007-12-04T22:14:19.109-08:00How To: AIX NetworkingNetwork Administration on AIX1.TCP/IP related daemon startup script/etc/rc.tcpip2.To view the route tablenetstat -r3.To view the route table from the ODM DBlsattr -EHl inet0 -a route4.Temporarily add a default routeroute add default 192.168.1.15.Temporarily add an address to an interfaceifconfig en0 192.168.1.2 netmask 255.255.255.06.Temporarily add an alias to an interfaceifconfig en0 Jeffnoreply@blogger.com3tag:blogger.com,1999:blog-8408696888617076771.post-56140981982291382442007-10-25T00:01:00.000-07:002007-12-03T17:42:23.978-08:00Timezone on Tru64Change Timezone on Unix Tru64/etc/zoneinfo/etc/zoneinfo/localtime/etc/zoneinfo/sourceszic(8)Changing localtime to New York# ln -sf /etc/zoneinfo/America/New_York /etc/zoneinfo/localtime# ln -sf /etc/zoneinfo/Hongkong /etc/zoneinfo/localtimeJeffnoreply@blogger.com0tag:blogger.com,1999:blog-8408696888617076771.post-39581123331638466762007-08-28T01:57:00.000-07:002007-12-04T22:19:41.032-08:00IS-IS TopicISIS - Topic ISIS – Intermediate System to Intermediate System - Links-State, use SPF algorithm,VLSM - Uses helo to establish adjacencies - Open Standard , comparable to OSPF - was originally designed as IGP for CLNS Connectionless Network Service - the OSI Layer 3 protocol is the CLNP Connectionless Network Protocol(unreliable like IP) - uses CLNS address to identify routers and Jeffnoreply@blogger.com0