Guest

Preview Tool

Cisco Bug: CSCsz35246 - ATM SPA dLFI seq 0x000000 on pkts bigger than frag_size w/o policy cfg

Last Modified

Jan 31, 2017

Products (1)

  • Cisco 7600 Series Routers

Known Affected Releases

12.2(33)SRB5a

Description (partial)

Symptom:

A 7600-SIP-200 running dLFI with a SPA-2XOC3-ATM running 122-33.SRB4 may send MLP fragments
with non-incrementing Sequence Numbers of 0x000000 resulting in a violation of Section 
4.1 of RFC RFC 1717. This violation may result in interoperability problems with certain
non-Cisco devices running MLP.

Conditions:

Problem happens with a single ATM VC configured for hardware LFI when a "service-policy"
is not configured on the Virtual-Template interface. Problem is platform-specific to a
SPA-2XOC3-ATM situated in 7600-SIP-200. 

Issue occurs runing 122-33.SRB4, 122-33.SRB5a, 122-33.SRD1, 122-33.SRC3.

This problem does NOT happen when using a Flexwan2/PA-A3 or PA-A6 Port Adapter.
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)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.