Category Archives: Routers

Template: Cisco tunnel template – EIGRP

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Cisco tunnel template – EIGRP Below is a tunnel template used to provide a single site failover between two remote locations. interface Tunnel[SITE TUNNEL KEY] description —- [SITE] & [REMOTE SITE] —- ip address [SITE TUNNEL IP] 255.255.255.252 ip flow ingress tunnel source [LOCAL PROVIDER INTERFACE IP] tunnel destination [SITE PROVIDER IP] tunnel key [TUNNEL KEY] interface Tunnel[SITE2 TUNNEL KEY] description —- [SITE] & [REMOTE SITE2] —- ip address [SITE2 TUNNEL IP] 255.255.255.252 ip flow ingress tunnel source [LOCAL PROVIDER INTERFACE IP] tunnel destination [SITE2 PROVIDER IP] tunnel key [SITE2 TUNNE


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The Abolute top 10 show Commands Everybody Needs To Know in Cisco Routers

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Some commands in the Cisco router configuration are just irreplaceable. The ‘show’ commands are the most widely used in Cisco routers. Here is a list of the 10 mostly used of these ‘show’ commands. 1. show running-config This command is your true best friend. It shows the complete configuration that is running currently. 2. show startup-config This command shows the configuration that is saved on the NVRAM. It is helpful in knowing the configuration that will be applied the next time the routers is reloaded. 3. show interface This command shows status and statistics regarding interfaces. This command is almost always needed in trouble


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Understanding the Cisco IOS File Name Convention

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Before planning an upgrade or install of an IOS file, you will need to understand the meaning of the name of each IOS file. The IOS file name is usually similar to this form xxxx-yyy-ww.aaa-bb.bin 1. The xxxx is the platform. For example: c1005 – For 1005 platform c1600 – For 1600 platform c1700 – For 1700, 1720, and 1750 platforms c2500 – For 25xx, 3xxx, 5100, and AO (11.2 and later only) platforms c2600 – For 2600 platform c2800 – For Catalyst 2800 platform c2900 – For 2910 and 2950 platforms c3620 – For 3620 platform c3640 – For 3640 platform c4000 – For 4000 platform (11.2 and later only) c4500 – For 4500 and 4700 p


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