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Cisco Bug: CSCun73211 - CRS-X 90sec delay for recursive BGP IPv4 hw CEF program on LC insertion

Last Modified

Feb 04, 2017

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

5.1.1.FWDG

Description (partial) 

Symptom:
Ingress and egress traffic drop upon insertion of a CRS Series 40x10GbE interface module. OIR is simulated using the 'no hw-module power disable location <loc>' admin configuration command. Loss duration observed to last up to around 90 seconds and to impact BGP IPV4 prefixes before complete traffic restoral.

Conditions:
40x10GbE interface module insertion in CRS -X running IOS-XR 5.1.1 release. Interfaces on this line card are configured as active bundle-ethernet member links with mixed CRS-FP-X+40X10GE and CRS-FP140+14X10GBE interfaces on local CRS-X router. Ingress and egress traffic is being sent over the bundle-ether interface.
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