From: crl (cisco@xxxxxxxxxxxx)
Date: Sat Apr 28 2001 - 15:34:45 GMT-3
Ooops. The mistake I made was in the subject field! I'm only trying to do
transparent bridging with the token ring, ethernet, and BVI... In this
scenario I didn't get into SRB and SR/TLB.
Any thoughts regarding this knowing it's transparent bridging? The strange
part is that it works for most traffic - ping, telnet, RIP1, RIP2, IGRP but
not OSPF, EIGRP...
----- Original Message -----
From: "Johnny Dedon" <johnny.dedon@exodus.net>
To: "crl" <cisco@crl.fdns.net>; "Groupstudy" <ccielab@groupstudy.com>
Sent: Saturday, April 28, 2001 1:22 PM
Subject: Re: Translational Bridging between Token Ring and Ethernet, IRB,
and Various Routing Protocols
> Crl,
> >From the configs you posted, I don't see any translational bridging going
> on. You would need the source-bridge ring group global command. You
would
> also need the source-bridge transparent global command and the
source-bridge
> interface command.
> The source bridge interface command associates the local srb and ring with
a
> virtual ring. The source-bridge ring group command creates the virtual
> ring. The source-bridge transparent command is used to bridge the
> transparent bridge traffic to the virtual ring.
> You may also want to include the source-bridge spanning interface command
to
> allow the srb to forward spanning tree packets and single-route explorer
> packets.
>
> HTH
> Johnny Dedon
> Senior Staff Consultant
> Exodus Professional Services
> johnny.dedon@exodus.net
> www.exodus.net
> ----- Original Message -----
> From: "crl" <cisco@crl.fdns.net>
> To: "Groupstudy" <ccielab@groupstudy.com>
> Sent: Friday, April 27, 2001 11:13 AM
> Subject: Translational Bridging between Token Ring and Ethernet, IRB, and
> Various Routing Protocols
>
>
> > Doing some experiments. Topology is:
> >
> > r4---token-ring---r3---ethernet---r2
> >
> > On r3, I'm doing SR/TLB and IRB. The Token Ring and Ethernet are a
common,
> > bridged subnet, and r3 has other interfaces that are routed (serials)
but
> I
> > don't think they're relvant to this discussion.
> >
> > Experimenting with various routing protocols on this network segment. I
> > found that RIP1, RIP2, and IGRP work well in this situation. OSPF and
> EIGRP
> > do not establish adjacencies. I have the bitswap-layer3-addresses
command
> in
> > place to allow ping, telnet etc to work well between all three routers.
> >
> > Take OSPF for example.
> > r4#sh ip ospf nei
> > <no output>
> >
> > r3#sh ip ospf nei
> > Neighbor ID Pri State Dead Time Address
> Interface
> > 197.7.77.1 1 INIT/DROTHER 00:00:35 197.7.8.4 BVI1
> > 197.7.8.10 1 FULL/DR 00:00:33 197.7.8.10 BVI1
> >
> > r2#sh ip ospf nei
> > Neighbor ID Pri State Dead Time Address
> Interface
> > 197.7.77.1 1 INIT/DROTHER 00:00:39 197.7.8.4
> Ethernet0
> > 197.7.8.3 1 FULL/BDR 00:00:31 197.7.8.3
> Ethernet0
> >
> > Doesn't seem to make much sense. I suspected it was a multicast issue,
but
> > RIP2 works well. It's not an MTU problem, I checked that out -
everything
> is
> > set to 1500. I suspect the bitswap-layer3 command might be mangling
EIGRP
> > and/or OSPF, but not RIP and IGRP.
> >
> > Here's the relevant configs. I'd just like to know if this is impossible
> > (great!) or if I'm missing something (doh!):
> >
> >
> > r4#sh run
> > !
> > interface Loopback0
> > ip address 197.7.77.1 255.255.255.0
> > no ip directed-broadcast
> > !
> > interface TokenRing0
> > mtu 1500
> > ip address 197.7.6.4 255.255.255.0 secondary
> > ip address 197.7.8.4 255.255.255.0
> > no ip directed-broadcast
> > ip nat outside
> > ring-speed 16
> > !
> > router ospf 1
> > network 197.7.0.0 0.0.255.255 area 0
> >
> > -------------------------------------------
> >
> > r3#sh run
> > !
> > bridge irb
> > !
> > interface Ethernet0
> > no ip address
> > no ip directed-broadcast
> > bridge-group 1
> > !
> > interface Serial1
> > ip address 197.7.7.3 255.255.255.0
> > no ip directed-broadcast
> > !
> > interface TokenRing0
> > mtu 1500
> > no ip address
> > no ip directed-broadcast
> > ring-speed 16
> > bridge-group 1
> > !
> > interface BVI1
> > ip address 197.7.8.3 255.255.255.0
> > no ip directed-broadcast
> > !
> > router ospf 1
> > network 197.7.0.0 0.0.255.255 area 0
> > !
> > bridge 1 protocol ieee
> > bridge 1 bitswap-layer3-addresses
> > bridge 1 route ip
> >
> > -------------------------------------------
> >
> > r2#sh run
> > !
> > interface Ethernet0
> > ip address 197.7.8.10 255.255.255.0
> > !
> > !
> > router ospf 1
> > network 197.7.0.0 0.0.255.255 area 0
> > **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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