Cisco Bug: CSCvt06921 - [cups] MTU value in RA is different in packet-too-big
Oct 02, 2020
- Cisco ASR 5000 Series
- Cisco ASR 5500
Known Affected Releases
21.12.18 21.16.3 21.16.c7.74145 21.16.c9 21.16.d0 21.19.0 21.19.n1
Symptom: Cisco ASR5xxx PGW generates router advertisement packet with the value of MTU size being the same as data tunnel MTU configured under the APN instead of the actual packet length supported Conditions: Cisco ASR5xxx PGW should be configured with default APN configuration having <i> data tunnel mtu 1500 </i> IPv6 subscriber session should be established.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.
Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
- Related Community Discussions
- Number of Related Support Cases