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.
| #Log Time |
| set cli timestamp |
| set cli screen-width 200 |
| show ntp associations no-resolve | no-more |
| show ntp status no-resolve | no-more |
| ## Hardware Status |
| show chassis hardware | no-more |
| show chassis hardware clei-models | no-more |
| show chassis hardware detail | no-more |
| show chassis fpc detail | no-more |
| show chassis fpc pic-status | no-more |
| show chassis environment | no-more |
| show chassis routing-engine | no-more |
| show version invoke-on all-routing-engines | no-more |
| ## Based on Platform |
| show chassis fabric reachability | no-more |
| show chassis fabric fpcs | no-more |
| show chassis fabric plane | no-more |
| show chassis fabric plane-location | no-more |
| show chassis fabric summary | no-more |
| ## System Status |
| show chassis alarms | no-more |
| show system alarms | no-more |
| show system commit | no-more |
| show system core-dumps | no-more |
| ## Interfaces Status |
| show arp no-resolve expiration-time | no-more |
| show interfaces diagnostics optics | no-more |
| show interfaces redundancy | no-more |
| show interfaces terse | match “up up” | count | no-more |
| show interfaces terse | match down | count | no-more |
| show interfaces terse | match down | no-more |
| show interfaces descriptions | match up | count | no-more |
| show interfaces descriptions | match down | count | no-more |
| show interface terse | no-more |
| show interfaces extensive | no-more |
| ## Route Summary |
| show krt queue | no-more |
| show route summary | no-more |
| show route forwarding-table summary | no-more |
| ## LACP |
| show lacp interfaces | no-more |
| show ppm adjacencies detail | no-more |
| ## BFD |
| show bfd session detail | no-more |
| show bfd session extensive | no-more |
| show ppm adjacencies detail | no-more |
| ## VRRP |
| show vrrp | no-more |
| ## ISIS |
| show isis interface | no-more |
| show isis interface detail| no-more |
| show isis adjancency | no-more |
| ## BGP |
| show bgp summary | no-more |
| show bgp neighbor | no-more |
| ## LDP |
| show ldp interface | no-more |
| show ldp neighbor | no-more |
| show ldp session | no-more |
| ## VLAN and IRB |
| show vlans |no-more |
| show interfaces irb terse |no-more |
| ## Storage |
| show system storage invoke-on all-routing-engines | no-more |
| ## Configuration backup and RSI |
| show system commit | no-more |
| show configuration | no-more |
| show configuration | display set | no-more |
| request support information | no-more |
| ## SLM/SLC |
| show log messages | no-more |
| show log chassisd | no-more |
For Cisco IOS-XR-related health check commands, refer to Cisco IOS-XR Pre & Post Upgrade Installation Commands
[…] For Juniper-related health check commands, refer to Juniper Health Check Commands […]