-
From: Reza Sharifi
To:
Sent: Thursday, May 23, 2002 5:30 PM
Subject: Re: Token ring Question. [7:44805]
Ivan,
Take a look at the subject (CCIE written question)
that Dennis responded to on May 20.
He is a great source for this group.
Thanks
Reza
Ivan wrote in message
[EMAIL
you can do transparent bridging between Token Ring and Ethernet. It
requires a Translational Bridging..
See the following URL: (watch for wrap)
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/mmbridge.htm
Mike W.
2504s wrote in message
[EMAIL PROTECTED]">news:[EMAIL
Hi Ivan,
Mac addresses only have local significance. So for your scenario, host X
sends a packet with it's own MAC address as the source and the router TR
interface as the destination MAC address. The router then rebuilds the
packet and sends it out the ethernet interface with the Ethernet
This is achieved by bit swapping. I do not know the complete ins and outs of
it but I has attached a URL which is a bit swapping tool which can be used
to verify translation.
http://www.cisco.com/cgi-bin/Support/Bitswap/bitswap.pl
Message Posted at:
He said the router is acting as a translation (sic) bridge. So the router
(bridge) address does not come into play. The router (bridge) translates
the non-canonical TR address to a canonical Ethernet address. The bridge
reverses the bits in each byte of the address.
We have had many
At 07:25 AM 5/23/02, Ivan wrote:
Hi all,
I have a interest question, doesn't any one know the answer?
A router is being used as a translation bridge between a Token Ring network
and an Ethernet network. Host X on the Token ring sends a packet to Host Y
on the Ethernet. The soursce MAC address
I just noticed that I misplaced the functional/non-functional bit. I hate
that! ;-)
The functional/non-functional bit is the most significant bit of the 3rd
byte (not the least significant bit of the 2nd byte as I said before.)
So, the address is:
4000.a089.0002
0100 1010
This is correct if the router is acting as a router but when the router
is bridging, this is no longer true.
To answer your question, Ivan, you would simply perform bitswapping on the
TR MAC to find the ethernet equivalent.
There were a series of posts on this topic (some by me) that
Priscilla Oppenheimer wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
If this seems mysterious or difficult to apply in a generic fashion to any
hex representation of a byte, then it's not time yet to go for CCIE.
Thank you for verifying my feelings about this. As you may, or
Ivan,
Take a look at the subject (CCIE written question)
that Dennis responded to on May 20.
He is a great source for this group.
Thanks
Reza
Ivan wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Hi all,
I have a interest question, doesn't any one know the answer?
A
I'm with you 100% on this. I said that bit swapping is as easy as writing
your name backwards. Maybe that's a bit of an exaggeration, so to speak,
because you do have to do hex to binary and back, but only for a four-digit
binary number. So it's as easy as writing your name backwards in Pig
]
cc:
Subject:Re: Token ring Question. [7:44805]
Is this part of a business decision process?:
At 07:25 AM 5/23/02, Ivan wrote:
Hi all,
I have a interest question, doesn't any one know the answer?
A router is being used as a translation bridge between a Token Ring
network
gotta love it! ;-)
Priscilla
JMcL
- Forwarded by Jenny Mcleod/NSO/CSDA on 24/05/2002 08:59 am -
Priscilla Oppenheimer
Sent by: [EMAIL PROTECTED]
24/05/2002 03:17 am
Please respond to Priscilla Oppenheimer
To: [EMAIL PROTECTED]
cc:
Subject:Re: Token
What about option D?
[EMAIL PROTECTED] 7/9/01 9:53:04 AM
I am taking a practice test and one of the questions had to do with
token
ring
number. Is the srn tell you what the ring number is? Is that mean
source
ring number? I thought the answer would be 1. But that isn't an
option?
here is
You are right. I missed that. the x always confuses me.
- Original Message -
From: John Neiberger
To:
Sent: Monday, July 09, 2001 10:12 AM
Subject: Re: Token ring question srn 1 bn 2 trn 100 [7:11476]
What about option D?
[EMAIL PROTECTED] 7/9/01 9:53:04 AM
I am taking
At 11:53 AM 7/9/01, [EMAIL PROTECTED] wrote:
I am taking a practice test and one of the questions had to do with token
ring
number. Is the srn tell you what the ring number is? Is that mean source
ring number? I thought the answer would be 1. But that isn't an option?
Answer D is 1. I think
Let me ask you this. Are the interfaces of equal cost? Do you want routing loops? What
prevents routing loops, and how are loops prevented?
Scott
Vincent wrote:
For I am not familiar with TokenRing. I just wondering how come i insert 2
router into the token ring hub,
one of the interface is
Both routers have the same ring speed?
Verify the cables. Verify the MAU. Divide a problem into smaller parts. Then
test each part. Substitute a questionable item for a known good item. If the
new arrangement now fails the questionable item is defective. Conversely if
the new arrangement works
:[EMAIL PROTECTED]]
Sent: Thursday, March 29, 2001 11:45 AM
To: 'Vincent'; [EMAIL PROTECTED]
Subject: RE: Token Ring Question
Both routers have the same ring speed?
Verify the cables. Verify the MAU. Divide a problem into smaller parts. Then
test each part. Substitute a questionable item for a known
check ring speed
Vincent wrote:
For I am not familiar with TokenRing. I just wondering how come i insert 2
router into the token ring hub,
one of the interface is up/down all the time.
Thanks
Vincent
_
FAQ, list archives, and subscription info:
I can't remember whether the 2502 needs a media filter.
What type of physical port is the cable attaching to:
1. nine pin female
2. rj-45
Are the HP mau's active (do they have external power) or
are they passive?
I suspect that you are using passive hubs, and the phantom
voltage from the NIC's
The HP maus are active mau and my routers are connected via media filters. Since I am
using active devices so I wonder why the length limitation is too short. Any
suggestion?
For your question, it is simply I got three 2502 and 2 maus.
regards,
Fanglo
Ray Mosely wrote:
I can't remember
n'; [EMAIL PROTECTED]
Subject: RE: token ring question
yes you can, as far as having two IP or IPX ranges running on a single mau.
You can't mix ring speeds however.
daveh
-Original Message-
From: Brian [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 09, 2000 9:35 AM
To: [EMAIL
Thanks for the research, Jim. Jim has shown that when a router attempts to
insert into a ring (MAU) with a different ring number than an
already-inserted router, it doesn't work. The second router fails to insert
into the ring. Here's what happens, assuming you don't use Rodgers Moore's
Try it.
From: Brian [EMAIL PROTECTED]
Reply-To: Brian [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: token ring question
Date: Thu, 9 Nov 2000 08:34:34 -0600 (CST)
Can you configure multiple rings on a single MAU? I mean If I plug 2
2502's into a MAU can I set different rings for them, or
: Re: token ring question
Try it.
From: Brian [EMAIL PROTECTED]
Reply-To: Brian [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: token ring question
Date: Thu, 9 Nov 2000 08:34:34 -0600 (CST)
Can you configure multiple rings on a single MAU? I mean If I plug 2
2502's into a MAU can I set
yes you can, as far as having two IP or IPX ranges running on a single mau.
You can't mix ring speeds however.
daveh
-Original Message-
From: Brian [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 09, 2000 9:35 AM
To: [EMAIL PROTECTED]
Subject: token ring question
Can you
: Frank Wells [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 09, 2000 12:21 PM
To: [EMAIL PROTECTED]
Subject: Re: token ring question
Try it.
From: Brian [EMAIL PROTECTED]
Reply-To: Brian [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: token ring question
Date: Thu, 9 Nov 2000
??? IP will detect the conflict and IPX will beacon.
-Original Message-
From: Hennen, David [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 09, 2000 1:03 PM
To: 'Brian'; [EMAIL PROTECTED]
Subject: RE: token ring question
yes you can, as far as having two IP or IPX ranges running
with
different network addresses and put them into different bridge groups why
would that be a problem.
daveh
-Original Message-
From: NP-BASS LEON [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 09, 2000 1:43 PM
To: 'Hennen, David'; 'Brian'; [EMAIL PROTECTED]
Subject: RE: token ring question
[EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: RE: token ring question
Date: Thu, 9 Nov 2000 13:42:38 -0500
HOW
I would really like to know this one.
If I heard it correct Brian mentioned that he had a dumb MAU, so that MAU
looks at that entire box as being one network segment, s
idging on the routers to connect it back again? Hmmm...
I've held you hand this far - now y'all walk a bit on your own...
Z
From: NP-BASS LEON [EMAIL PROTECTED]
Reply-To: NP-BASS LEON [EMAIL PROTECTED]
To: "'Hennen, David'" [EMAIL PROTECTED],"'Brian'"
[EMAIL PROTECT
of the trade.
-Original Message-
From: Hennen, David [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 09, 2000 1:56 PM
To: NP-BASS LEON; [EMAIL PROTECTED]
Subject: RE: token ring question
I have seen two ip ranges running on a single IBM 8228 mau (you can't get
much dumber than
D]
Subject: RE: token ring question
yes you can, as far as having two IP or IPX ranges running on a single mau.
You can't mix ring speeds however.
daveh
-Original Message-
From: Brian [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 09, 2000 9:35 AM
To: [EMAIL PROTECTED]
Subject:
Oppenheimer [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 09, 2000 4:10 PM
To: [EMAIL PROTECTED]
Subject: RE: token ring question
At 01:42 PM 11/9/00, NP-BASS LEON wrote:
HOW
I would really like to know this one.
If I heard it correct Brian mentioned that he had a dumb MAU, so
]]
Sent: Thursday, November 09, 2000 4:10 PM
To: [EMAIL PROTECTED]
Subject: RE: token ring question
At 01:42 PM 11/9/00, NP-BASS LEON wrote:
HOW
I would really like to know this one.
If I heard it correct Brian mentioned that he had a dumb MAU, so that MAU
looks at that entire box
I'm about to cause problemsa debate or something
Something way back in my memory says it is possible to break one MAU into
two physical rings. The real problem is that you have to voltage on a port
to charge and open a port's bypass relay. If my memory is correct, you make
two
are you sure about the ring speed?
Ruud
-Oorspronkelijk bericht-
Van: Andrew Lennon [mailto:[EMAIL PROTECTED]]
Verzonden: zaterdag 10 juni 2000 9:05
Aan: 'm. jean stockton'; 'Matt Shell'; [EMAIL PROTECTED]
Onderwerp: RE: Token ring question
knackered media/mau, both router say
] [mailto:[EMAIL PROTECTED]]On Behalf Of
Dale Cantrell
Sent: Monday, June 26, 2000 6:15 PM
To: [EMAIL PROTECTED]
Subject: RE: Token ring question - Solved!
I'm gonna have to disagree with that statement. At least in part. The MAU
that I have, STAR-TEK, ( I can't even find out how old it is, no Url
"Dale Cantrell" [EMAIL PROTECTED] wrote:
I'm gonna have to disagree with that statement. At least in part. The MAU
that I have, STAR-TEK, ( I can't even find out how old it is, no Url.)
828AT, has 1-8 ports and a Ri and a Ro also. Tell me if yours is
the same way?
We have to qualify this
""Edward Solomon"" [EMAIL PROTECTED] wrote in message
8jabbo$1uf$[EMAIL PROTECTED]">news:8jabbo$1uf$[EMAIL PROTECTED]...
"Dale Cantrell" [EMAIL PROTECTED] wrote:
I'm gonna have to disagree with that statement. At least in part. The
MAU
that I have, STAR-TEK, ( I can't even find out how old
Ports 1 and 8 on a MAU are reserved for ring in and ring out for daisy
chaining MAU's. You cannot use them for stations.
-Original Message-
From: Matt Shell [mailto:[EMAIL PROTECTED]]
Sent: Saturday, June 10, 2000 1:19 PM
To: [EMAIL PROTECTED]
Subject: Re: Token ring question - Solved
PROTECTED]
Reply-To: David B McGlumphy [EMAIL PROTECTED]
To: "'Matt Shell'" [EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: RE: Token ring question - Solved!
Date: Mon, 12 Jun 2000 11:19:55 -0400
Ports 1 and 8 on a MAU are reserved for ring in and ring out for daisy
chaining MAU's. You
: RE: Token ring question
I am very new at this but I do not see your 'no shut' command.
Makeeda
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Matt Shell
Sent: Saturday, June 10, 2000 12:31 AM
To: [EMAIL PROTECTED]
Subject: Token ring question
I have
You might just have a bad MAU. Granted, the 8228 is
passive, so this may not be the case. Have you tried
to plug each of them in one at a time? If they both
fail, get another MAU (Known working). The chance that
you have 2 bad 2503s is slim, unless they came from
the same place. Hope this helps.
tag off and plugged into a working port.
Ray M.
CCNA
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Matt Shell
Sent: Saturday, June 10, 2000 12:19 PM
To: [EMAIL PROTECTED]
Subject: Re: Token ring question - Solved!
Don't you hate it when your trying to set u
Since you have 2 sets of router and token-ring 9-pin-type1 cable it should
be easy to troubleshoot this problem..i would suggest you to try this...
1.. Connect only one router to the MAU. Check if token-ring port inserts
into the ring. I ask you to do this because if the other cable is bad it
Don't you hate it when your trying to set up a Layer 3 scenario, but you get
stuck troubleshooting Layer 2 problems!?!?!?!
Thanks to everyone who posted and emailed suggestions. Everything is
working now. Some info that I probably should have included in the first
post was that I was plugged
I am very new at this but I do not see your 'no shut' command.
Makeeda
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Matt Shell
Sent: Saturday, June 10, 2000 12:31 AM
To: [EMAIL PROTECTED]
Subject: Token ring question
I have two 2502s plugged into
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