[202205]Use device loopback IP address to send SNMP query from neighboring ceos or vsonic (#8802) #8972
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description of PR
Summary:
Fixes # (issue)
Type of change
Back port request
Approach
What is the motivation for this PR?
cherry-pick of #8802
sonic-net/sonic-buildimage#15487 modifies snmpd in SONiC to listen on management and loopback ip by default instead of listening on any IP. test_interop_protocol.py::test_snmp sends a query to the neighbor device using the link ip address. After the above change to listen on management and loopback ip, the snmp query will fail. Hence, modifying the test to send SNMP query to SONiC DUT from neighboring vsonic/eos using Loopback IP of SONiC DUT.
How did you do it?
Get loopback IPv4 address DUT and use that to query from neighbor device. Added a generic helped function to send SNMP query to DUT from a neighbor.
(cherry picked from commit d66965a)
How did you verify/test it?
Tested on single asic VS testbed.
Any platform specific information?
Supported testbed topology if it's a new test case?
Documentation