[j-nsp] SSH/Telnet session hanging

Mark Tinka mtinka at globaltransit.net
Thu Jun 2 10:12:22 EDT 2011


On Thursday, June 02, 2011 08:44:38 PM Serge Vautour wrote:

> I'm confused by your statement that BGP is limited to
> 4096. I have BGP peers up with 8192:

The smallest size a BGP-4 update message can be is 19 bytes 
(minimum), while the largest size it can be is 4,096 bytes.

The 8,192 bytes you're seeing in the session details relate 
to the MSS that BGP has negotiated based on the interface 
MTU or configured 'tcp-mss' command. This does not change 
the fact that the largest size a BGP update message can be 
is 4,096 bytes.

This has always been the case since BGP-2.

Hope this clarifies.

Cheers,

Mark.
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