Cisco Bug: CSCun36655 - GETVPN+LISP IPsec MTU error
Last Modified
Apr 17, 2019
Products (1)
- Cisco IOS
Known Affected Releases
15.3(3)XB12
Description (partial)
Symptom: If the terminal adjacency of a lisp interface is removed and then re-added, the lisp interface MTU may remain at the invalid value of 65535. This can be seen in the "show cef interface <intf> internal" command output. IPsec will obtain the MTU value from CEF and LISP, and the incorrect MTU will cause drops of large packets. IPSEC MTU incorrectly computed - causing packet drops on large packets traversing from "inside" to "outside" are dropped. Conditions: This symptom is observed in the following Cisco C800 Series: Cisco IOS Software, C890 Software (C890-UNIVERSALK9-M), Version 15.3(3)XB12, RELEASE SOFTWARE (fc2)
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