Once I was updating the Community Migration with BGP Native-AS Characteristic weblog submit, I wished to execute the identical command (present ip bgp) on all routers in my community.
Not an issue: since Dan Partelly added the netlab exec command, it’s so simple as netlab exec * present ip bgp. Properly, not precisely; there are nonetheless just a few quirks.
The simple one first: any respectable Unix shell thinks it ought to broaden the * within the command line, leading to a command that features each filename within the present listing. Not precisely useful; now we have to cite the * to make the command work:
$ netlab exec '*' present ip bgp
netlab exec r* works however netlab exec * doesn’t.
Right here are the primary few traces produced by the above command:
Connecting to clab-LocalAS_Migr-custa utilizing SSH port 22, executing present ip bgp
BGP desk model is 4, native router ID is 10.0.0.4
Standing codes: s suppressed, d damped, h historical past, * legitimate, > greatest, i - inner,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path, L long-lived-stale,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V legitimate, I invalid, N Not discovered
Community Subsequent Hop Metric LocPrf Weight Path
*> 10.6.6.0/24 10.1.0.10 0 64510 64500 i
*> 10.8.8.0/24 0.0.0.0 0 32768 i
*> 10.9.9.0/24 10.1.0.10 0 64510 65100 iConnection to clab-localas_migr-custa closed by distant host.
We’ve the outcomes we’d like, however they’re filled with noise. For instance, we should always eliminate the BGP desk legend. We are able to use the | start Community filter on Cisco IOS to try this, nevertheless it’s a bit laborious so as to add that filter to a bash command with out beginning a Linux pipe. Fortuitously, we are able to quote the | image:
$ netlab exec '*' present ip bgp | start Community
Connecting to clab-LocalAS_Migr-custa utilizing SSH port 22, executing present ip bgp | start Community
Community Subsequent Hop Metric LocPrf Weight Path
*> 10.6.6.0/24 10.1.0.10 0 64510 64500 i
*> 10.8.8.0/24 0.0.0.0 0 32768 i
*> 10.9.9.0/24 10.1.0.10 0 64510 65100 iConnection to clab-localas_migr-custa closed by distant host.
It could even be good to eliminate the Connecting to… header however nonetheless retain some details about the machine on which we’re executing the command. Let’s use the -q (quiet) flag along with the --header flag:
$ netlab exec -q --header '*' present ip bgp | start Community
================================================================================
custa: executing present ip bgp | start Community
================================================================================
Community Subsequent Hop Metric LocPrf Weight Path
*> 10.6.6.0/24 10.1.0.10 0 64510 64500 i
*> 10.8.8.0/24 0.0.0.0 0 32768 i
*> 10.9.9.0/24 10.1.0.10 0 64510 65100 iConnection to clab-localas_migr-custa closed by distant host.
Lastly, there’s the annoying “Connection closed by distant host” message appended on the finish of the final line. I couldn’t eliminate it (and StackOverflow and associates had been no assist) or persuade Cisco IOS to terminate the final line with a newline; when you have an thought, please add a remark.
Once I was updating the Community Migration with BGP Native-AS Characteristic weblog submit, I wished to execute the identical command (present ip bgp) on all routers in my community.
Not an issue: since Dan Partelly added the netlab exec command, it’s so simple as netlab exec * present ip bgp. Properly, not precisely; there are nonetheless just a few quirks.
The simple one first: any respectable Unix shell thinks it ought to broaden the * within the command line, leading to a command that features each filename within the present listing. Not precisely useful; now we have to cite the * to make the command work:
$ netlab exec '*' present ip bgp
netlab exec r* works however netlab exec * doesn’t.
Right here are the primary few traces produced by the above command:
Connecting to clab-LocalAS_Migr-custa utilizing SSH port 22, executing present ip bgp
BGP desk model is 4, native router ID is 10.0.0.4
Standing codes: s suppressed, d damped, h historical past, * legitimate, > greatest, i - inner,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path, L long-lived-stale,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V legitimate, I invalid, N Not discovered
Community Subsequent Hop Metric LocPrf Weight Path
*> 10.6.6.0/24 10.1.0.10 0 64510 64500 i
*> 10.8.8.0/24 0.0.0.0 0 32768 i
*> 10.9.9.0/24 10.1.0.10 0 64510 65100 iConnection to clab-localas_migr-custa closed by distant host.
We’ve the outcomes we’d like, however they’re filled with noise. For instance, we should always eliminate the BGP desk legend. We are able to use the | start Community filter on Cisco IOS to try this, nevertheless it’s a bit laborious so as to add that filter to a bash command with out beginning a Linux pipe. Fortuitously, we are able to quote the | image:
$ netlab exec '*' present ip bgp | start Community
Connecting to clab-LocalAS_Migr-custa utilizing SSH port 22, executing present ip bgp | start Community
Community Subsequent Hop Metric LocPrf Weight Path
*> 10.6.6.0/24 10.1.0.10 0 64510 64500 i
*> 10.8.8.0/24 0.0.0.0 0 32768 i
*> 10.9.9.0/24 10.1.0.10 0 64510 65100 iConnection to clab-localas_migr-custa closed by distant host.
It could even be good to eliminate the Connecting to… header however nonetheless retain some details about the machine on which we’re executing the command. Let’s use the -q (quiet) flag along with the --header flag:
$ netlab exec -q --header '*' present ip bgp | start Community
================================================================================
custa: executing present ip bgp | start Community
================================================================================
Community Subsequent Hop Metric LocPrf Weight Path
*> 10.6.6.0/24 10.1.0.10 0 64510 64500 i
*> 10.8.8.0/24 0.0.0.0 0 32768 i
*> 10.9.9.0/24 10.1.0.10 0 64510 65100 iConnection to clab-localas_migr-custa closed by distant host.
Lastly, there’s the annoying “Connection closed by distant host” message appended on the finish of the final line. I couldn’t eliminate it (and StackOverflow and associates had been no assist) or persuade Cisco IOS to terminate the final line with a newline; when you have an thought, please add a remark.
