Cisco Bug: CSCsg39754 - DHCP snooping redirect ACL permits more than just bootpc and bootps port
Jan 30, 2017
- Cisco Catalyst 6000 Series Switches
Known Affected Releases
Symptoms: When DHCP snooping is configured on a VLAN, the redirect access list programmed in TCAM permits a wide range of UDP ports from bootps/bootpc to 65xxx. Conditions: UDP traffic to these destination ports (0x143, 0x243, 0xFF43) is being redirected to Route Processor (RP). If "ip dhcp snooping limit" is not configured, then RP CPU goes to 100%.
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Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
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