Antonio M. Soares wrote:
Hello group,
I have a 6500 running 122-18.SXF7 with lots of BGP peers and all of the BGP
sessions have negotiated a MSS of 536 bytes. Here's an
I think you need a newer IOS. Certainly under SXI I see:
ac-core#sh ip bgp neighbors | inc path-mtu|max data seg
Transport(tcp) path-mtu-discovery is enabled
Datagrams (max data segment is 536 bytes):
Transport(tcp) path-mtu-discovery is enabled
Datagrams (max data segment is 1460 bytes):
Transport(tcp) path-mtu-discovery is enabled
Datagrams (max data segment is 9060 bytes):
Transport(tcp) path-mtu-discovery is enabled
Datagrams (max data segment is 536 bytes):
...depending on whether the neighbor is similarly equipped to be
jumbo-framed and PMTU.
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