Guest

Preview Tool

Cisco Bug: CSCuj41431 - ZBFW: Downloading a big file stops as ZBFW does not support SACK

Last Modified

Feb 01, 2017

Products (74)

  • Cisco IOS
  • Cisco 812 CiFi Integrated Services Router
  • Cisco 886VAG 3G Integrated Services Router
  • Cisco 892W Integrated Services Router
  • Cisco 888W Integrated Services Router
  • Cisco 861W Integrated Services Router
  • Cisco C892FSP Integrated Services Router
  • Cisco 2951 Integrated Services Router
  • Cisco 819 Hardened Integrated Services Router
  • Cisco C897VA Integrated Services Router
View all products in Bug Search Tool Login Required

Known Affected Releases

15.3(3)M

Description (partial)

Symptom:
ZBFW does not support SACK and hence ACKs are dropped considering the packet to be Out of Window, where the packet is in window due to SACK

Conditions:
Download a big file through ZBFW. First identified on 15.2(4)M4.  15.2(4)M3 image does not show the problem.
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.