From: Brian Lodwick (xpranax@xxxxxxxxxxx)
Date: Mon Oct 15 2001 - 16:19:38 GMT-3
I'm sorry I am at work and had to go to a meeting, and I was writing quickly
without analyzing your information very accurately. I didn't catch that good
point you had- no ethernet involved.
It would seem like in your scenario you would have to use source-route
bridging on the Token-Ring. I believe it's an either or thing with SRT and
SR/TLB.
I would think you would have to configure a ring-group, reconfigure the
Token-Ring interface to use source-route bridging, and point the next hop
ring to the ring-group, then add the SR/TLB stuff?
Have you come up with anything else?
R1
source-bridge transparent 1000 50 1 1
!
source-bridge ring-group 1000
!
interface Serial0
ip address 137.20.25.2 255.255.255.0
no ip route-cache
no ip mroute-cache
clockrate 64000
bridge-group 1
!
interface TokenRing0
ip address 137.20.10.1 255.255.255.0
no ip route-cache
no ip mroute-cache
ring-speed 16
source-bridge 10 1 1000
>>>Brian
>From: perkinsr@WellsFargo.COM
>To: xpranax@hotmail.com, perkinsr@WellsFargo.COM
>CC: ccielab@groupstudy.com
>Subject: RE: IRB issues from lab 8
>Date: Mon, 15 Oct 2001 11:46:50 -0700
>
>Brian, I don't think you caught that this is SERIAL to TOKEN. There is no
>Ethernet.
>
>However, I was under the impression you could just bridge from token to
>ether if you were doing transparent bridging on the token interface. I
>have
>been assuming this is what is done on a cat with both token and ether
>ports,
>but I could be wrong. I also think that serial bridging is more like
>ethernet than serial as far as address formats and whatnot, so I would
>guess
>your points about ethernet are still valid.
>
>Here is the questions then, how can you configure SR/TLB when you have no
>SRB to translate through. This is one of the things that lead me to
>believe
>that token and ethernet could be bridged transparently without any more
>config. I don't know...
>
>Ray
>
>
>
>-----Original Message-----
>From: Brian Lodwick [mailto:xpranax@hotmail.com]
>Sent: Monday, October 15, 2001 11:00 AM
>To: perkinsr@WellsFargo.COM
>Cc: ccielab@groupstudy.com
>Subject: RE: IRB issues from lab 8
>
>
>It would be logical that RIP updates would work and not pings if SR/TLB was
>not configured. I know you can transparently bridge Token-Ring frames, but
>you cannot just Trnasparently bridge Ethernet frames into Token-Ring. You
>must translate. SRT is only for going from Token-Ring to Token-Ring.
>
> >>>Brian
>
>
> >From: perkinsr@WellsFargo.COM
> >To: xpranax@hotmail.com
> >CC: ccielab@groupstudy.com
> >Subject: RE: IRB issues from lab 8
> >Date: Mon, 15 Oct 2001 10:55:55 -0700
> >
> >These are good points, but my impressin was that Because I have not
> >configured SRB on the token interface and have configured a bridge group
>I
> >should be doing transparent bridging over the token interface. The MTU
> >could be an issue but I don't think it would affect my 100 byte pings. I
> >am
> >bridiging from Serial to token, but those are still valid issues. I just
> >don't see why this isn't working. Especially when it sort of works, RIP
> >broadcasts are getting through and the route tables are full.
> >
> >To be clear I am routing IP and bridging IPX on R1.
> >
> >Thanks for your input,
> >Ray
> >
> >
> >-----Original Message-----
> >From: Brian Lodwick [mailto:xpranax@hotmail.com]
> >Sent: Monday, October 15, 2001 10:49 AM
> >To: perkinsr@WellsFargo.COM
> >Cc: ccielab@groupstudy.com
> >Subject: Re: IRB issues from lab 8
> >
> >
> >I'm sorry looks like I jumped a little too fast there. I guess I
>should've
> >made sure you trying to bridge IPX from r5 to r7?
> >If yes, my response should be correct. Also I believe you will run into
>an
> >issue bridging between the Ethernet and Token-Ring networks.
> >Won't you have to configure SR/TLB on r1 since you are trying to bridge
> >from
> >
> >Ethernet to Token-Ring?
> >Also I believe you will want to assure the max MTU all around is 1500 so
> >that you don't get an oversized frame on the Ethernet segment from the
> >Token-Ring segment?
> >
> > >>>Brian
> >
> >
> > >From: perkinsr@WellsFargo.COM
> > >Reply-To: perkinsr@WellsFargo.COM
> > >To: ccielab@groupstudy.com
> > >Subject: IRB issues from lab 8
> > >Date: Mon, 15 Oct 2001 10:21:01 -0700
> > >
> > >I cannot get IRB to work. Here is the IRB scenario from lab 8, the
>only
> > >differance is there is token instead of ether between R1 and R7.
> > >
> > >
> > > BVI1
> > > |
> > >-----R5----------------------R1----------------------R7--t5/3
> > > s0 s1 to0 t5/0
> > >
> > >
> > >
> > >This is tough, I can't ipx ping from R7 to R5, but routing info is
> >passed.
> > >R7 all routes beyond R5, R7 is a stub, but net 701 (off t5/3) is
>visible
> > >from R5. Pings will not work though. I was thinking frame type
> > >concic/non-concical type problems. I tried making the MAC of t5/3
>0.0.ff
> > >so
> > >that it would be the same either way, but that didn't work. The BVI1
>on
> >R5
> > >is set to SAP frame type just like the token interface on R7.
> > >
> > >Help....
> > >
> > >
> > >
> > >configs:
> > >R5
> > >ipx routing 0000.0000.0005
> > >!
> > >interface Serial1
> > > ip address 137.20.25.1 255.255.255.0
> > > no ip directed-broadcast
> > > ip accounting output-packets
> > > no logging event subif-link-status
> > > bridge-group 1
> > >!
> > >interface BVI1
> > > no ip address
> > > no logging event subif-link-status
> > > ipx encapsulation SAP
> > > ipx network 700
> > >!
> > >ipx router eigrp 10
> > > network 5130
> > > network 5004
> > > network 695
> > >!
> > >!
> > >ipx router rip
> > > no network 5130
> > > no network 5004
> > > no network 695
> > >!
> > >bridge irb
> > >bridge 1 protocol ieee
> > > bridge 1 route ip
> > > bridge 1 route ipx
> > > no bridge 1 bridge ip
> > >
> > >R1
> > >!
> > >interface Serial0
> > > ip address 137.20.25.2 255.255.255.0
> > > no ip route-cache
> > > no ip mroute-cache
> > > clockrate 64000
> > > bridge-group 1
> > >!
> > >interface TokenRing0
> > > ip address 137.20.10.1 255.255.255.0
> > > no ip route-cache
> > > no ip mroute-cache
> > > ring-speed 16
> > > bridge-group 1
> > >!
> > >bridge 1 protocol ieee
> > >
> > >R7
> > >ipx routing 0000.0000.0007
> > >!
> > >interface TokenRing5/0
> > > ip address 5.5.5.5 255.255.255.0 secondary
> > > ip address 137.20.10.70 255.255.255.0
> > > ipx network 700
> > > ring-speed 16
> > >!
> > >interface TokenRing5/3
> > > ip address 172.168.70.1 255.255.255.0
> > > ipx network 701
> > > ring-speed 16
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