From: Brian McGahan (brian@cyscoexpert.com)
Date: Thu Sep 19 2002 - 08:41:37 GMT-3
SR/TLB is only for non-routable protocols. You can however
transparently bridge IP between Ethernet and Token-Ring. All you need
is the following:
Bridge 1 protocol ieee
Bridge 1 bitswap-layer3-addresses
!
interface Ethernet 0
bridge-group 1
!
interface TokenRing0
bridge-group 1
!
"Translational bridging allows you to bridge between dissimilar LANs,
commonly Ethernet and Token Ring, or Ethernet and FDDI. In the case of
Ethernet and Token Ring bridging, translational bridging only allows
connectivity for non-routable protocols such as Local-Area Transport
(LAT), Maintenance Operation Protocol (MOP), and Network Basic
Input/Output System (NetBIOS). We'll explain more about that later on.
<snip>
Sometimes MAC addresses are carried in the data portion of a frame. For
instance, Address Resolution Protocol (ARP) places the hardware address
in the data portion of the the link-layer frame. It is simple to convert
source and destination addresses in the header, but conversion of
hardware addresses that may appear in the data portion is more
difficult. When performing source route transparent or source route
translational bridging between Ethernet and Token Ring, Cisco does not
search for instances of hardware addresses in the data portion. So, only
non-routable protocols work with Ethernet and Token Ring bridging."
http://www.cisco.com/warp/public/701/4.html
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/
ibm_r/brprt1/br1dtb.htm#xtocid6
HTH
Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
http://www.cyscoexpert.com
Voice: 847.674.3392
Fax: 847.674.2625
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> VANGADASALAM,SURENDRAN (HP-Singapore,ex4)
> Sent: Thursday, September 19, 2002 5:30 AM
> To: 'Jihene Bouraoui'; 'steven.j.nelson@bt.com ';
VANGADASALAM,SURENDRAN
> (HP-Singapore,ex4); 'ccielab@groupstudy.com '
> Subject: RE: SR/TLB
>
> Hi guys,
> I have placed everything that was metioned. Still does not solve the
> problem.
>
> MTU - 1500
> Birdge 1 protocol ieee
>
>
> -----Original Message-----
> From: Jihene Bouraoui [mailto:BouraouiJ@globalknowledge.net]
> Sent: 19 September 2002 17:34
> To: 'steven.j.nelson@bt.com '; 'surendran.vangadasalam@hp.com ';
> 'ccielab@groupstudy.com '
> Subject: RE: SR/TLB
>
>
> I have the same problem, and the command bridge 1 protocol ieee
doesn't
> make ay effect
>
> -----Original Message-----
> From: steven.j.nelson@bt.com
> To: surendran.vangadasalam@hp.com; ccielab@groupstudy.com
> Sent: 19/09/2002 10:12
> Subject: RE: SR/TLB
>
> you don't have bridge 1 protocol ieee under the global config.
>
> Thanks
>
> Steve
>
> -----Original Message-----
> From: VANGADASALAM,SURENDRAN (HP-Singapore,ex4)
> [mailto:surendran.vangadasalam@hp.com]
> Sent: 19 September 2002 08:39
> To: Ccielab (E-mail)
> Subject: SR/TLB
>
>
> Hi Group,
> I have a problem with my SR/TLB configuration.
>
>
> R8-------(Token Ring)---------R13--------(Ethernet)---R14
>
>
> I am trying to ping from the R8 to R14. But am unable to do so. The
> token
> ring is connected to 3920 switch. Below is the configuration. I have
> also
> turned off IP routing in R13.
>
> Router 13
>
> source-bridge ring-group 10
> source-bridge transparent 10 11 1 1
> !
> interface Ethernet0/0
> ip address 1.1.1.3 255.255.255.0
> no ip route-cache
> half-duplex
> bridge-group 1
> !
> interface TokenRing0/0
> ip address 1.1.1.4 255.255.255.0
> no ip route-cache
> ring-speed 16
> source-bridge 1 1 10
>
>
> Router 8
>
> interface TokenRing4/0
> ip address 1.1.1.2 255.255.255.0
> ring-speed 16
>
> Router 14
>
> interface Ethernet 0/0
> ip address 1.1.1.1 255.255.255.0
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:43:56 GMT-3