From: brajesh.thakur@wipro.com
Date: Sat Aug 04 2007 - 07:28:30 ART
Dear Lim,
If you are using 'broadcast' keyword for both map commands on spoke
router, you are just sending double broadcast traffic towards hub router
as broadcast is enabled per dlci basis and not per ip address basis. In
lab they may have mentioned something like "don't duplicate broadcast
traffic when sending data from spoke"
Warm Regards,
Brajesh Thakur
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Toh Soon, Lim
Sent: Saturday, August 04, 2007 2:34 PM
To: ccielab@groupstudy.com
Subject: "frame-relay map broadcast" command for spoke-to-spoke
Hi All,
I have a hub-and-spoke frame relay network, the DLCIs are as follows:
R2 (204)------------(402) R4
(205)------------(502) R5
R2 is the hub whereas R4 & R5 are the spokes.
R2 Config
---------
!
int s 0/0
ip add 10.10.10.2 255.255.255.0
encap frame-relay
no frame-relay inverse-arp
frame-relay map ip 10.10.10.4 204 broadcast
frame-relay map ip 10.10.10.5 205 broadcast
!
R4 Config
---------
!
int s 0/0
ip add 10.10.10.4 255.255.255.0
encap frame-relay
no frame-relay inverse-arp
frame-relay map ip 10.10.10.2 402 broadcast
frame-relay map ip 10.10.10.5 402 broadcast
!
R5 Config
---------
!
int s 0/0
ip add 10.10.10.5 255.255.255.0
encap frame-relay
no frame-relay inverse-arp
frame-relay map ip 10.10.10.2 502 broadcast
frame-relay map ip 10.10.10.4 502 broadcast
!
For the spoke routers, what's the difference if the frame map statement
pointing to each other has the "broadcast" keyword compared to without
the
"broadcast" keyword? Either way, the spoke routers can ping to each
other.
I believe it has no bearing on routing protocol neighbor adjacencies.
Adjacency is only established with the hub router as far as OSPF and
EIGRP
are concerned.
My understanding is, the frame map statements are not even required
between
spokes when we run EIGRP or OSPF (p2mp) on the frame relay network.
Please enlighten me.
Thank you.
B.Rgds,
Lim TS
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