From: JJ Crump (RCrump@xxxxxxxxxxxxxxxx)
Date: Fri Jun 28 2002 - 10:17:49 GMT-3
Here is an excerpt from the command reference for 'frame-relay map' that may
help...
The broadcast keyword provides two functions: it forwards broadcasts when
multicasting is not enabled, and it simplifies the configuration of OSPF for
nonbroadcast networks that will use Frame Relay.
The broadcast keyword might also be required for some routing protocols-for
example, AppleTalk-that depend on regular routing table updates, especially
when the router at the remote end is waiting for a routing update packet to
arrive before adding the route.
By requiring selection of a designated router, OSPF treats a nonbroadcast,
multiaccess network such as Frame Relay in much the same way as it treats a
broadcast network. In previous releases, this required manual assignment in
the OSPF configuration using the neighbor interface router command. When the
frame-relay map command is included in the configuration with the broadcast
keyword, and the ip ospf network command (with the broadcast keyword) is
configured, there is no need to configure any neighbors manually. OSPF will
now automatically run over the Frame Relay network as a broadcast network.
(See the ip ospf network interface command for more detail.)
Ralph (JJ) Crump
-----Original Message-----
From: Ahmed Al-Ghawas [mailto:ghawas@batelco.com.bh]
Sent: Friday, June 28, 2002 8:55 AM
To: Reggie Terrell
Cc: ccielab@groupstudy.com
Subject: Re: Frame relay static maps
But cant we avoid the broadcast statement by using the neighbor command?
----- Original Message -----
From: "Reggie Terrell" <rterrell@bellatlantic.net>
To: "Ahmed Al-Ghawas" <ghawas@batelco.com.bh>
Cc: <ccielab@groupstudy.com>
Sent: Friday, June 28, 2002 3:58 PM
Subject: Re: Frame relay static maps
> Ahmed,
>
> Yes, layer 3 routing protocols like OSPF need that to pass
> information.
>
> Hope that helps...
>
> Ahmed Al-Ghawas wrote:
>
> > Hi,
> >
> > Is it true that we ought to make it a practice to add the broadcast
statement
> > when configuring frame relay static maps? (i.e. frame-relay map ip
x.x.x.x
> > dlci# broadcast)?
> >
> > I read this in the new book "CCIE Practical Studies I" but wanted to
make sure
> > if understood it correctly. It is on page 350
> >
> > Any input is appreciated
> >
> > Thanks,
> > Ahmed
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