RE: PVC status don't go down [7:35389]
I thks to all who come to advise, really appreciate. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=35662t=35389 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PVC status don't go down [7:35389]
Ok, The PVC status would never go down till the switch reports it as down, and only then will the line protocol go down. I have come across this scenario a couple of times (with ATM, concept is the same). And the trick is to use a routing protocol between the 2 routers, a routing protocol senses that the keepalives / hellos are not being answered and so will consider the neighbor as down, and in turn will activate the isdn circuit. You could also use dialer watch, watch a route and if that route goes down (when one end of the frame goes down) activate the isdn. hth Nick Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=35649t=35389 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PVC status don't go down [7:35389]
You could also use Frame-Relay End-To-End keepalives (FREEK). This works best if a subinterface is used. --- Nick S. wrote: Ok, The PVC status would never go down till the switch reports it as down, and only then will the line protocol go down. I have come across this scenario a couple of times (with ATM, concept is the same). And the trick is to use a routing protocol between the 2 routers, a routing protocol senses that the keepalives / hellos are not being answered and so will consider the neighbor as down, and in turn will activate the isdn circuit. You could also use dialer watch, watch a route and if that route goes down (when one end of the frame goes down) activate the isdn. hth Nick __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=35654t=35389 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PVC status don't go down [7:35389]
You see Eric, because I have an ISDN line as backup, that's why I need both routers to see the PVC as down for any failure that happen on either side. In that case, both routers can then activate the ISDN from either side and use the backup route properly. Now, with router B not able to see the frame relay route down, it keeps sending data through the PVC. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=35484t=35389 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
PVC status don't go down [7:35389]
Can anyone enlight me on this. I have 2 sites connected through a Frame Relay network as below : Router A Frame Relay Router B My question is this when interface of router A goes down, router B cannot notice it and the whole PVC is not updated as down. But when the interfaces of both routers are configured as subinterface, router B can then update router A's interface as down and the whole PVC goes down. What is concept behind ? Why doesn't the keepalive update both side properly ? Anthony. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=35389t=35389 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PVC status don't go down [7:35389]
The physical interface won't go down until their is a loss of signal from the switch. Is the line protocol up or down on the main interface of router B when router A is down? I look at it like this. Say I have a T1 Frame Relay circuit with 20 64K PVCs mapped to other circuits in a network. If one of the remote routers goes down I sure don't want my T1 to go down. The Subinterface however will show down. This happens in the frame relay network. Once the PVC is built through the frame relay cloud the network knows whether or not either side of the PVC is sending and receiving LMI. If LMI goes away on one end of the PVC, the PVC itself is affected not the connection from the router/CSU to the frame relay switch. Hope this helps! Eric Lange Anthony Toh cc: Sent by: Subject: PVC status don't go down [7:35389] nobody@groupstu dy.com 02/14/2002 04:30 AM Please respond to Anthony Toh Can anyone enlight me on this. I have 2 sites connected through a Frame Relay network as below : Router A Frame Relay Router B My question is this when interface of router A goes down, router B cannot notice it and the whole PVC is not updated as down. But when the interfaces of both routers are configured as subinterface, router B can then update router A's interface as down and the whole PVC goes down. What is concept behind ? Why doesn't the keepalive update both side properly ? Anthony. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=35392t=35389 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
