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Cisco Bug: CSCul24665 - dhcp relay should not forward dhcp packets dropped by dhcp snooping

Last Modified

May 10, 2018

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)

DHCP relay forwards DHCP packets which should have been dropped by DHCP snooping.

When DHCP snooping is configured in a bridge-domain and DHCP relay is configured on the BVI in that bridge-domain, snooping and relay will happen in parallel.

So even if snooping decides to drop a DHCP packet, then relay will still foward the DHCP packets to the DHCP server.
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