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Cisco Bug: CSCus65267 - ICMP packets dropped on CRS FP-X

Last Modified

Feb 15, 2018

Products (18)

  • Cisco Carrier Routing System
  • Cisco CRS-1 Line Card Chassis (Dual)
  • Cisco CRS-X 8-Slot Single-Shelf System
  • Cisco CRS-X Multishelf System
  • Cisco CRS-1 Line Card Chassis (Multi)
  • Cisco CRS-1 16-Slot Line Card Chassis
  • Cisco CRS-3 Multishelf System
  • Cisco IOS XR Software
  • Cisco CRS-1 4-Slot Single-Shelf System
  • Cisco CRS-1 Fabric Card Chassis
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Known Affected Releases


Description (partial)

The ping with packet size more than the MTU of link fails and no ICMP type 3 code 4 is returned to the originating node

Topology: Min 3 node 
 Node A -- Node B -- Node C

   Configure MTU x on Node B. Ping Node C from Node A with packet size > MTU(node B)
  Expected Behavior:
   Node B should send Node A ICMP(type 3 code 4) packets
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