From: yu chunyan (yuchunyan@hotmail.com)
Date: Sat Aug 02 2003 - 14:28:58 GMT-3
Hi,
as far as I know, the dialer watch is supposed to keep the line up until the
watched routes show up. In order to accomplish this, you have to set the
idle timeout on the other end to 0 or a big number. sometimes it is
recommended to deny any traffic in dialer list,which will let dialer watch
to see if the watched routes show up in regular interval. Actually, it is
dialer watch that bring up line, not the traffic. But traffic will reset the
idle timer, which is no expected in dialer watch. I always think it is a
good idea to deny all traffic in dialer watch method. I was often confused
by training materials in isdn, and get no explanation.
Bin.
>From: Peng Zheng <zpnist@yahoo.com>
>Reply-To: Peng Zheng <zpnist@yahoo.com>
>To: ccielab@groupstudy.com
>Subject: ISDN in unnamed LAB
>Date: Fri, 1 Aug 2003 23:31:40 -0700 (PDT)
>
>Under Section VI in unnamed lab of CCIE practical
>Studies:
>
>It said the link brcomes active only upon changes in
>the routing table. Only TCP traffic should bring up
>the link, routing updates should not.
>
>The solution is to use dialer watch and make it a stub
>area.
>
>and it's dialer-list:
>
>access-list 131 permit icmp 133.7.10.0 0.0.0.255
>133.7.28.0 0.0.0.255 echo
>access-list 131 permit icmp 133.7.10.0 0.0.0.255
>133.7.28.0 0.0.0.255 echo-reply
>dialer-list 1 protocol ip list 131
>
>Why?
>
>
>
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