DLSw Token Ring to Ethernet - Remote Peer MAC

[tckoon]

Hi,

Refer to following link, http://www.cisco.com/en/US/partner/tech/tk331/tk336/technologies_configuration_example09186a0080093ecd.shtml

If there is host attached Ring 500 with MAC 0000.1111.0000 (non-canonical) ,another host attached to router B E0, MAC 0000.2222.0000 (canonical)

1) If I configure dlsw mac-address command at router A , should the MAC address configure should change non-canonical ?

2) If I want to configure dlsw mac-address command at router B , is the configure MAC address remain as non-canonical ?

May be you can explain more about the scenerio about when or where to bit swap the MAC address of configuration.

Best Regards.

[jvogler]

target mac addresses and mac addresses in DLSW are always sent non-canonical.

DLSW always uses non-canonical.

The show commands will always remain non-canonical as well, so don't let that alarm you. You can use the 000.1111.0000 or whatever you want to use for the mac address as long as it is unique.

[jihicks]

Hi,

In both cases you will use the non-canonical version of the address. This is always the case in DLSw. The address from token ring will remain in the non-canonical form in DLSw and the ethernet MAC will get converted to the non-canonical form when bridged into DLSw.

Best regards,

Jim

[tckoon]

Hi,

How about both routers are ethernet ?

Do we need to convert it to non-canonical too ?

[jihicks]

Yes, it will always be in the non-canonical form in DLSw. So, if you are going to configure a MAC in DLSw, use the non-canonical form.

[tckoon]

Hi,

I get confusing. To make it simple I include the config and example.

Assume Token ring host is non-canonical and ethernet host is canonical. Please refer R1 & R2 config at the end.

Regards.

Scenario 1

-----------

Token Ring Host ---- R1 ===DLSW=== R2 ----Ethernet Host

(Answer)

XXXX.XXXX.XXXX - should convert to non-canonical

YYYY.YYYY.YYYY - remain non-canonical

Scenario 2

-----------

Ethernet Host ---- R1 ====DLSW==== R2 --------Ethernet Host

(Answer)

XXXX.XXXX.XXXX - should convert to non-canonical

YYYY.YYYY.YYYY - should convert to non-canonical

OR ?

XXXX.XXXX.XXXX - remain canonical

YYYY.YYYY.YYYY - remain canonical

which one ??

Best Regards.

R1

--

dlsw local-peer peer-id 1.1.1.2

dlsw remote-peer 0 tcp 1.1.1.1

dlsw mac-addr XXXX.XXXX.XXXXX remote-peer ip-address 1.1.1.1

R2

---

dlsw local-peer peer-id 1.1.1.1

dlsw remote-peer 0 tcp 1.1.1.2

dlsw mac-addr YYYY.YYYY.YYYY remote-peer ip-address 1.1.1.2

[mbinzer]

Hi,

if both end devices are on ethernet than you configure the ethernet style, canonical, mac address of the host as dmac on your sna device. You dont convert the dmac.

The first dlsw router will convert the mac address to tokenring format, non canonical, the second one, the host end, will convert it back to ethernet format, canonical on the way out.

So every show command in dlsw is still in tokenring format, non-canonical.

You only convert the dmac of the device if the host is on a different media, ethernet versus tokenring.

thanks...

Matthias