From: Chuck Larrieu (chuck@xxxxxxxxxxxxx)
Date: Sun Mar 04 2001 - 01:04:57 GMT-3
Frank, I need to start looking at bridging as well. Haven't done much of
this with routers, but let's look at this from a theoretical standpoint.
If you had a dedicated bridge on a network, how would you know? Do the
bridge ports have IP addresses? Or mac addresses for that matter?
Even being a layer two device, I don't believe that bridge ports need mac
addresses. Recall that a bridge operates by listening to traffic, and then
passing packets to directly connected segments when it hears a packet with a
destination mac that resides out one of the bridge ports.
I fooled with cisco bridging a ways back, and I seem to recall that in a
straight bridging mode, the router end points cannot be pinged. You would
have to have other devices on both connected segments, and would have to
ping those end points. This is not true for IRB.
I'm sure I will be corrected if I am misunderstanding this.
Chuck
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
fwells12
Sent: Saturday, March 03, 2001 2:18 PM
To: ccielab@groupstudy.com
Subject: Bridging over frame-relay.
How can I test end to end connectivity when bridging over frame relay? =
The serial interfaces have no IP addresses on them and the ethernet =
networks on each router are addresses on the same subnet. I have tried =
pinging both regularly and using extended pings but neither works. Do =
pings work for testing this scenario ? Theoretically I should be able =
to disable routing on both routers and still have bridged connectivity =
right?
Cheers
Configs if your interested:
Router3:
interface Ethernet0
ip address 10.1.1.3
no ip mroute-cache
no keepalive
no cdp enable
bridge-group 1
!
interface Serial0
no ip address=20
encapsulation frame-relay
no ip mroute-cache
no fair-queue
frame-relay map bridge 304 broadcast
frame-relay lmi-type ansi
bridge-group 1 =20
!
bridge 1 protocol ieee
Router4:
interface Ethernet0
ip address 10.1.1.4
no ip mroute-cache
no keepalive
no cdp enable
bridge-group 1
!
interface Serial0
no ip address=20
encapsulation frame-relay
no ip mroute-cache
no fair-queue
frame-relay map bridge 403 broadcast
frame-relay lmi-type ansi
bridge-group 1 =20
!
bridge 1 protocol ieee
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