Cisco Bug: CSCta73070 - ME3750 not sendig ICMP Dest. Unreach. Fragmentation Needed and DF bit
Feb 22, 2014
- Cisco Catalyst 3750 Metro Series Switches
Known Affected Releases
Symptom: ME3750 switch acting as MPLS PE or LER router does not send ICMP Destination Unreachable messages "Fragmentation Needed and DF set" (Type 3 Code 4) when 1500B IP packet is dropped due to MTU exceeded caused by MPLS overhead on egress MPLS link. Conditions: 1500B MTU limitation on ME3750 uplink to the rest of the MPLS network.
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Bug Details Include
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