Free Network Tutorials Posts

Cisco IOS-XR Minimum System Requirements for Upgrade For upgrading IOS-XR devices like ASR9000 routers, e.g. from 5.x to 6.x , the minimum memory requirements for ver. 6.2.3 are: minimum 2 GB compact flash on RSPs or Route Switch Processors minimum 6 GB memory on the RSP-440 and RP (ASR99xx) minimum 4 GB memory on LCs or Line Cards Command that can be used to find the physical memory of each modules: show watchdog memory-state location all | include “node|Physical Memory:”…

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These are the some commands being used when performing network change or maintenance, depending on the features or services being run in the network. Typically, this is very useful in verification, troubleshooting and comparison between before and after the change. terminal exec prompt timestamp terminal length 0 show version show run show filesystem location 0/rsp0/cpu0 show filesystem location 0/rsp1/cpu0 show ipv4 interface brief show ipv6 interface brief show route ipv4 summary show route ipv6 summary show route vrf all ipv4…

Cisco

Checking TX / RX optical power for Cisco IOS, IOS-XR, NX-OSFor checking transmission links, it is good to know how to find out the optical power for troubleshooting and making sure the desired or optimal range is meet. Here are the sample commands for checking the TX/RX optical power. IOS / IOS-XE If want to check TX & RX power for IOS based devices such as ASR1K ,e.g. interface GigabitEthernet 0/2/2,here’s how to do it:   IOS-router#show hw-module subslot x/x…

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