nanog mailing list archives
Re: BGP keepalive/holdtime at GigE exchange
From: "Martin Taylor" <marty_taylor () yahoo com>
Date: Fri, 12 Jan 2001 03:31:35 -0500
Lane, What about on Cisco's tweaking the global command "ip tcp synwait-time X" so you don't have to wait so long for BGP to notice that the TCP session no longer exists, there is probably a parallel command on Junos. I haven't tried it on BGP, but I would think that it would make BGP (and any other protocol that relies on TCP sessions) much more sensitive. marty
-----Original Message----- From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of Lane Patterson Sent: Friday, January 12, 2001 1:08 AM To: 'nanog () merit edu' Subject: FW: BGP keepalive/holdtime at GigE exchange 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.
_________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
Current thread:
- FW: BGP keepalive/holdtime at GigE exchange Lane Patterson (Feb 24)
- <Possible follow-ups>
- Re: BGP keepalive/holdtime at GigE exchange Martin Taylor (Feb 24)
- RE: BGP keepalive/holdtime at GigE exchange Lane Patterson (Feb 24)
- RE: BGP keepalive/holdtime at GigE exchange Deepak Jain (Feb 24)
- RE: BGP keepalive/holdtime at GigE exchange Lane Patterson (Feb 24)
- RE: BGP keepalive/holdtime at GigE exchange Deepak Jain (Feb 24)
- Re: BGP keepalive/holdtime at GigE exchange Clayton Fiske (Feb 24)
- Re: BGP keepalive/holdtime at GigE exchange Ryan O'Connell (Feb 24)
- Re: BGP keepalive/holdtime at GigE exchange Clayton Fiske (Feb 24)
- RE: BGP keepalive/holdtime at GigE exchange Deepak Jain (Feb 24)