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Cisco Bug: CSCvt34738 - SVL // DHCP discover relayed in a different vlan

Last Modified

Aug 29, 2020

Products (1)

  • Cisco Catalyst 9500H Series Switches

Known Affected Releases

16.12

Description (partial)

Symptom:
DHCP discover or request received on a L2 vlan (no SVI for this vlan on the switch) is getting relayed by another vlan where an SVI is configured.
This can result in endpoints getting an ip assigned from a wrong pool.

Conditions:
- DHCP discover/request received on L2 vlan
- DHCP discover/request wrongly relayed on a different vlan which has an SVI
- The above two conditions are not a guarantee that this bug will be hit. This is a corner case issue which results from a port misprogramming. Confirmation that this issue is being hit will likely require assistance from TAC.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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