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Cisco Bug: CSCup48832 - Identical IPv6 DHCP remote ID for L2 ports running source-guard/snooping

Last Modified

Feb 01, 2018

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

15.2(1)E

Description (partial)

Symptom:
Remote-id on all interfaces in the same vlan is identical:
Int gig 2/32
May 16 09:56:55.345 CET:   option REMOTEID(37), len 22
May 16 09:56:55.345 CET:     0x00000009020000020050000A0003000144D3CA6E6F32

Int gig 2/31
May 16 09:58:59.239 CET:   option REMOTEID(37), len 22
May 16 09:58:59.239 CET:     0x00000009020000020050000A0003000144D3CA6E6F32

Conditions:
4500 running SUP7E/7LE/6E/6LE
L2 ports enabled with below features:
ipv6 snooping attach-policy HOST
 ipv6 dhcp guard attach-policy DHCP-CLIENT
 ipv6 source-guard attach-policy SOUR-GUARD
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  • Full Description (including symptoms, conditions and workarounds)
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