Trouble with the FRR OSPF example

[aaronzhang194]

Hi, I tried to followed that example, but I got following error:

aaron@OptiPlex-7060:~/munet$ sudo -E munet -c examples/frr/ospf/ospf/munet.yaml
[sudo] password for aaron:
2025-11-17 23:31:05,788: INFO: Loaded logging config /usr/local/lib/python3.10/dist-packages/munet/logconf.yaml
2025-11-17 23:31:05,791: INFO: Loaded config from /home/aaron/munet/examples/frr/ospf/ospf/munet.yaml
2025-11-17 23:31:05,792: INFO: Validation failed: 'net1' is not of type 'object'

Failed validating 'type' in schema['properties']['topology']['properties']['nodes']['items']['properties']['connections']['items']:
{'type': 'object',
'properties': {'to': {'type': 'string'},
'ip': {'type': 'string'},
'ipv6': {'type': 'string'},
'name': {'type': 'string'},
'hostintf': {'type': 'string'},
'physical': {'type': 'string'},
'remote-name': {'type': 'string'},
'driver': {'type': 'string'},
'delay': {'type': 'integer'},
'jitter': {'type': 'integer'},
'jitter-correlation': {'type': 'string'},
'loss': {'type': 'integer'},
'loss-correlation': {'type': 'string'},
'rate': {'type': 'object',
'properties': {'rate': {'oneOf': [{'type': 'integer'},
{'type': 'string'}]},
'limit': {'oneOf': [{'type': 'integer'},
{'type': 'string'}]},
'burst': {'oneOf': [{'type': 'integer'},
{'type': 'string'}]}}}}}

On instance['topology']['nodes'][0]['connections'][0]:
'net1'
2025-11-17 23:31:05,799: INFO: Loading kinds config from /usr/local/lib/python3.10/dist-packages/munet/kinds.yaml
2025-11-17 23:31:05,938: INFO: Munet(munet): created
2025-11-17 23:31:06,292: INFO: L3NamespaceNode(r1): created
2025-11-17 23:31:06,550: INFO: L3NamespaceNode(r2): created
2025-11-17 23:31:06,754: INFO: L3NamespaceNode(r3): created
2025-11-17 23:31:07,459: INFO: Topology up: rundir: /tmp/munet

--- Munet CLI Starting ---

munet> show ip ospf neighbor
2025-11-17 23:31:22,143: INFO: Filtering hosts to kinds: ['frr']
2025-11-17 23:31:22,143: INFO: Filtered hosts: ['r1', 'r2', 'r3']
------ Host: r1 ------
*** non-zero exit status: 127
/bin/bash: line 1: vtysh: command not found
------- End: r1 ------
------ Host: r2 ------
*** non-zero exit status: 127
/bin/bash: line 1: vtysh: command not found
------- End: r2 ------
------ Host: r3 ------
*** non-zero exit status: 127
/bin/bash: line 1: vtysh: command not found
------- End: r3 ------
munet>

Notice the "vtysh: command not found" error and the earlier "Validation failed: 'net1' is not of type 'object'". Could they be related?

Thanks.
Aaron

[liambrady]

Hey Aaron,

The FRR (FRRouting) example topologies you are trying to run require you to have installed FRR on your system. Given that vtysh (i.e. the FRR configuration shell) is not found, I expect that the issue you are running in to is somehow related to your FRR install. Instructions on installing FRR can be found here.

The schema validation errors you are seeing are a known bug with many of the FRR example topologies and is due to a style issue in the munet.yaml. Despite the warnings, the topologies should be launchable without any issues.

[aaronzhang194]

Hi Liam,
Thanks a lot for your help! I just tried installing FRR, but I ran into some issues. Let me poke around those issues and may come back to bother your more.

[aaronzhang194]

Finally got back to this. It's now working!
I will play with the setup a bit more.
Thanks!