[33466] in North American Network Operators' Group
FW: BGP keepalive/holdtime at GigE exchange
daemon@ATHENA.MIT.EDU (Lane Patterson)
Fri Jan 12 01:11:16 2001
Message-ID: <4FA6CECCC8A3D41186F700B0D0784FF4054DE1@hq-exchange.corp.equinix.com>
From: Lane Patterson <lpatterson@equinix.com>
To: "'nanog@merit.edu'" <nanog@merit.edu>
Date: Thu, 11 Jan 2001 22:07:47 -0800
MIME-Version: 1.0
Content-Type: text/plain;
charset="iso-8859-1"
Errors-To: owner-nanog-outgoing@merit.edu
I am looking for operational BCP feedback on common practice for tweaking
down BGP holdtime/keepalive across GigE exchange points, since a peer
could go down on the other side of the GigE switch without a
corresponding adjacency change seen on your BR. The thought is
to make down peers known as fast thru a GigE exchange as they would
be over a POS private peer interface.
The current defaults are pretty gross, and much worse than the
ISIS hello and interface keepalive defaults of 10 seconds.
IOS12.x: neighbor [ip-address | peer-group-name] timers keepalive holdtime
holdtime: default 180 seconds
keepalive: default 60 seconds
http://cco.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/ip_r
/iprprt2/1rdbgp.htm#xtocid8553
JunOS 4.2:
holdtime: default 90 seconds
keepalive: default one third of holdtime
https://www.juniper.net/techpubs/software/junos42/swconfig-routing42/html/bg
p-summary13.html#1015669
Cheers,
-Lane
Lane Patterson <lane@equinix.com>
Equinix, Inc.
