From: ccie2be (ccie2be@nyc.rr.com)
Date: Thu Sep 25 2003 - 09:40:42 GMT-3
Hi,
There are 2 issues to keep in mind when thinking about traffic crossing an
isdn link:
a) What triggers the call ie. interesting traffic
b) What traffic crosses the link when it comes up.
Unless you define cdp traffic as interesting, it won't trigger the call, but
unless you disable it, cdp traffic will, by default, transit the link once
it is up so what needs to be done depends on the requirements. If the
requirement is that only X traffic be allowed to cross the link and X
doesn't include CDP, then you must disable it.
HTH,dt
----- Original Message -----
From: "Peng Zheng" <zpnist@yahoo.com>
To: <ccielab@groupstudy.com>
Sent: Thursday, September 25, 2003 3:24 AM
Subject: Should I disable cdp on ISDN
> On page 144 CCIE Practical Studies: Security, it said
> cdp triggers the ISDN call and therefore should be
> disabled if it isn't needed.
>
> Is that true? SHould I always disable cdp when
> configure DDR on ISDN?
>
>
>
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