From: asadovnikov (asadovnikov@comcast.net)
Date: Fri Oct 17 2003 - 22:30:49 GMT-3
Good explanation,
In addition for line to go down after primary route is back you need to
ensure that:
- there is not interesting traffic any more (i.e. the routes via ISDN have
worse metric then over primary line)
- that dialer idle timeout on calling side is finite (i.e. default, but not
0); setting dialer timeout on called side to 0 as Jonathan described is a
good idea to prevent flapping.
And last point, test it with later IOS. Way early 12.1 and 12.1T worked was
all over the place.
Best regards,
Alexei
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jonathan V Hays
Sent: Friday, October 17, 2003 2:34 PM
To: Ken.Farrington@barclayscapital.com; ccielab@groupstudy.com
Subject: RE: Dialer Watch
Dialer-watch will bring up the line and nail it up, depending only on the
watched route. It does not pay any attention to interesting traffic as far
as bringing up the line or keeping it up. Dialer-watch works independently
of interesting traffic.
So whether or not 224.0.0.10 brings up the link is a separate issue from
dialer-watch.
Since dialer-watch is configured on one side only (I'll call it the local
side), when the watched route is gone and the line is brought up by
dialer-watch, the remote side will time out after 120 seconds (default
idle-timeout is 120) and drop the line. Dialer-watch will just bring it back
up again every time this happens. To avoid this link flapping, just set
dialer idle-timeout to 0 (which means never time out) on the remote side of
the link.
HTH,
Jonathan
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Ken.Farrington@barclayscapital.com
Sent: Friday, October 17, 2003 2:04 PM
To: ccielab@groupstudy.com
Subject: Dialer Watch
Hey gang,
just a thought, if you use dialer-watch to watch a route and I use EIGRP
over this, i dont want 224.0.0.10 to bring the cct up so i mark it as
"uninteresting" (Bit like watching Manchester United play football).
so,
when the watched route goes down, the isdn kicks in, but now, i want to
keep the cct up whilst the dialer software reports the primary route as down
and not have an ISDN idle-timeout or it would be nice to allow eigrp hellos
keep the cct up so that my routing table is stable on this router (but is
already marked as Manu, opps, sorry, uninteresting).
Can I do this, thing is, I dont want to set the dialer idle-timer to 0
cause I still need an idle timeout incase someone pings the other side of
the int.
Basically, want dialer-watch to ensure that while it is reporting the
watched route as down, there is no dialer idle timeout value.
Is this achievable,
I know that Manchester United will never play exciting football, but that's
ok, I'm an Arsenal Fan :))
Cheers :))
Ken.
------------------------------------------------------------------------
For more information about Barclays Capital, please
visit our web site at http://www.barcap.com.
Internet communications are not secure and therefore the Barclays
Group does not accept legal responsibility for the contents of this
message. Although the Barclays Group operates anti-virus programmes,
it does not accept responsibility for any damage whatsoever that is
caused by viruses being passed. Any views or opinions presented are
solely those of the author and do not necessarily represent those of the
Barclays Group. Replies to this email may be monitored by the Barclays
Group for operational or business reasons.
------------------------------------------------------------------------
This archive was generated by hypermail 2.1.4 : Mon Nov 24 2003 - 07:53:04 GMT-3