The ISIS hostname and LSP ID displays incorrectly
It should be the same as system hostname.
The command set protocols isis <name> dynamic-hostname the command has no effect. This is expected since the feature is enabled by default.
Description
Description
It should be the same as system hostname.
The command set protocols isis <name> dynamic-hostname the command has no effect. This is expected since the feature is enabled by default.
Details
Details
- Difficulty level
- Normal (likely a few hours)
- Version
- 1.4-rolling-202101171022
- Why the issue appeared?
- Issues in third-party code
- Is it a breaking change?
- Behavior change
Event Timeline
Comment Actions
A possible reason, in the FRR hostname, declares 2 times.
hostname debian log syslog log facility local7 hostname r5-roll
Comment Actions
The bug with FRR described here,
ref https://github.com/FRRouting/frr/issues/7583
ref https://github.com/FRRouting/frr/issues/7522
Comment Actions
I can say that after testing here's what I found.
Turn on ISIS and here's how it is by default:
[email protected]:~$ show isis hostname Level System ID Dynamic Hostname * 0000.0000.0123 debian
Make change:
[email protected]# compare [edit system] >host-name booooo [edit] [email protected]# commit [edit] [email protected]# exit
But ISIS still doesn't show it:
[email protected]:~$ show isis hostname Level System ID Dynamic Hostname * 0000.0000.0123 debian
Restart FRR and:
[email protected]:~$ restart frr WARNING: This is a potentially unsafe function! You may lose the connection to the router or active configuration after running this command. Use it at your own risk! Continue? [y/N]: y [email protected]:~$ show isis hostname Level System ID Dynamic Hostname * 0000.0000.0123 booooo
This seems to be a behavior of FRR. I don't know for sure but, it seems FRR only checks /etc/hostname on startup and takes that value and ONLY that value on startup. It doesn't check it on change.....so for it to work (as in the hostname to change) then FRR must be restarted.I checked it again:
[email protected]# set system host-name vyos [edit] [email protected]# compare [edit system] >host-name vyos [edit] [email protected]# commit [edit] [email protected]# exit Warning: configuration changes have not been saved. exit [email protected]:~$ show isis hostname Level System ID Dynamic Hostname * 0000.0000.0123 booooo [email protected]:~$ restart frr WARNING: This is a potentially unsafe function! You may lose the connection to the router or active configuration after running this command. Use it at your own risk! Continue? [y/N]: y [email protected]:~$ show isis hostname Level System ID Dynamic Hostname * 0000.0000.0123 vyos