From: Scott Morris (swm@emanon.com)
Date: Sat Jan 17 2004 - 23:16:27 GMT-3
Setting the keepalive of 0 just stops basic keepalives from making the ISDN
link stay up all the time. So this means that DLSW will activate the line
and be interesting/important traffic.
If you disable it from the dialer list, it will never be interesting.
Watch how your scenario is worded. If you never want to "go up" the ISDN
line as in never traverse it, you'll have to play with your routing to make
sure it never routes in that direction towards the peer.
As far as the dialer-list goes... The "protocol dlsw" is NOT TCP dlsw. So
be aware of what you are or are not specifying as interesting. You'll use
TCP 2065 as the destination of the traffic to be interesting or not
(depending on which direction your peering is formed).
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIS, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
William Chen
Sent: Saturday, January 17, 2004 8:58 PM
To: jfaure@sztele.com
Cc: ccielab@groupstudy.com
Subject: Re: DLSW & Dial Backup
I will choose to use 1. Becuaes you want to avoid DLSW traffic "goes up" the
ISDN link, you should exclude DLSW traffic from interesting packets. What 2
does for you is prevent DLSW traffic to flap the ISDN link when there is not
user DLSW traffic? Think about there is a real circuit try to set up across
the DLSW, will 2 or 1 avoid DLSW traffic "goes up" the ISDN link?
Best Regards,
William Chen
----- Original Message -----
From: <jfaure@sztele.com>
To: <ccielab@groupstudy.com>
Sent: Sunday, January 18, 2004 1:44 AM
Subject: DLSW & Dial Backup
> Hi Folks.
>
> Imagine you have a router in a site that normally goes to backbone through
> Frame Relay, but you also have a DDR isdn link to access if the frame
> service is out of service. Your local router is doing dlsw tcp based with
a
> remote router too.
>
> If they ask to configure the dial backup solution to avoid that DLSW
> traffic "goes up" the isdn link, what do you think is the best solution,
> and why:
>
> 1-A dialer-group list denying dlsw as interesting traffic
> 2- To use the option KEEPALIVE 0 in "dlsw remote-peer" command
>
> Thank you very much for your help.
>
> Regards
>
>
> Juan Faure Ferrer
> email: jfaure@sztele.com
>
> Lmnea de Negocio de Telematica y CC
> Ingeniero de Integracisn de Redes y Sistemas
> --------------------------------------------------------------------------
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