From: Mohamed, Liban [NTK] (Liban.Mohamed@sprint.com)
Date: Tue Dec 25 2007 - 13:57:48 ART
Pandi,
Also if you already didn't configure P2P, make sure you configure both A-B P2P so the DIS election is canceled, hence will speed up the recovering, you are heading on the right direction on tweaking the Hello-interval. I am not sure if configuring carrier-delay will do any good. Is this production? You can look up fast-flooding command, or BFD if convergence is an issue.
Thanks,
Liban Mohamed
NTAC-IP
Sprint/Nextel
www.sprint.net
liban.mohamed@sprint.com
(W) 678-291-3438
(PCS) 404-441-9701
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of PANDI MOORTHY
Sent: Tuesday, December 25, 2007 11:01 AM
To: Cisco certification
Subject: Question on configuring "carrier-delay" on LAN interface
Hi,
Question on configuring "carrier-delay" on LAN interface
I have two router A & B on the same LAN forming ISIS neighbor.
The question is to ensure convergence time is as fast as possible while link
down detection is also as fast a possible.
One way to improve the convergence is to set the hello timer to minimal "isis
hello-interval minimal "
To make the link down detection as fast as possible, can I configure the
"carrier-delay msec 0" on the LAN interface? Will it work?
Reading the Cisco documentation, it says this command applicable only to
serial interface.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hif_r/int_a1h.htm#wp1199046
But IOS still allow me to configure it on LAN interface
Rack1R2#sh run int fas 0/0
Building configuration...
Current configuration : 104 bytes
!
interface FastEthernet0/0
no ip address
*carrier-delay msec 0*
duplex half
no clns route-cache
end
Rack1R2#
Please advice
Regards
Pandi
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