From: Brian Dennis (brian@5g.net)
Date: Wed Sep 11 2002 - 00:43:24 GMT-3
Assuming that these routers are all on the same IP subnet the solution
is to have the spoke routers forward the packets destined for the other
spokes to the hub as opposed to having the spokes trying to communicate
directly with each other. Without static Frame-Relay mappings a spoke
will only have a layer 3 to layer 2 mapping to the hub assuming that
inverse-ARP hasn't been disabled and is working properly. So this being
the case here are a couple possible solutions to solve the spoke to
spoke mapping issue:
1) Static routes
2) Changing the OSPF network type to "point-to-multipoint" (assuming
OSPF is being used)
3) Policy based routing
4) Point-to-point sub-interfaces on the spokes
Brian Dennis, CCIE #2210 (R&S/ISP Dial)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Angelo De Guzman
Sent: Tuesday, September 10, 2002 6:30 PM
To: ccielab@groupstudy.com
Subject: OSPF and NBMA
To All,
R1 R2 R3 R4 ---- R6
\ \ / /
\ \ / /
\ \ / /
R5
This is a Hub and spoke topology. Wanted to have
reachability to all network. Frame-relay cloud is in
area 0. R1 has another area w/c is 1 and R2 has 2 and
so on. I don't want to use frame-relay map to reach
the other spokes. I need to solve this problem via
Layer 3.
Any ideas?
Thanks,
Angelo De Guzman
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:43:48 GMT-3