From: Anand Ghody (vze2hq65@xxxxxxxxxxx)
Date: Wed Mar 06 2002 - 04:00:57 GMT-3
Does this mean if I put a static arp entry in each router I will be able
to ping the other.
In this case I don't have to deal with ARP and the MAC being in the data
portion.
Brian McGahan wrote:
>Anand,
>
>This is a common issue that causes people to tear their hair out. SR/TLB
>can only be done with non-routable protocols. This document explains why.
>http://www.cisco.com/warp/customer/701/4.html
>
>"Remember that Ethernet and Token Ring bridging is only possible with
>non-routable protocols. Here's why:
>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."
>
>HTH
>
>Brian McGahan
>CCIE #8593
>brian@cyscoexpert.com
>
>CyscoExpert Corporation
>Internetwork Consulting & Training
>http://www.cyscoexpert.com
>Voice: 847.674.3392
>Fax: 847.674.2625
>
>----- Original Message -----
>From: "Chua, Parry" <Parry.Chua@compaq.com>
>To: "Anand Ghody" <vze2hq65@verizon.net>; <ccielab@groupstudy.com>
>Sent: Tuesday, March 05, 2002 3:59 AM
>Subject: RE: translational bridging driving be nuts!!!
>
>
>>How it is going ?
>>
>>It is not clear about the setup on Cat3920 between R1 and R4, You mention
>>
>it is SRT on
>
>>3920. If SRT, then you may want to try to set it to SRB and you are doing
>>
>SRBTLB.
>
>>Next, it R1 and R4 connect to the same ring or just in a extended vlan
>>
>(ring-bridge-ring)?
>
>>You can debug at R4 when do testing to see what packet has send across..
>>Parry Chua
>>
>>-----Original Message-----
>>From: Anand Ghody [mailto:vze2hq65@verizon.net]
>>Sent: Monday, March 04, 2002 1:18 AM
>>To: ccielab@groupstudy.com
>>Subject: translational bridging driving be nuts!!!
>>
>>
>>Alright, I have no idea why this is not working and need help. I
>>checked previous posts and made some adjustments but it still does not
>>work Need help!!!
>>
>>heres the setup
>>
>>r3 (e0, 172.16.3.2) -> catalyst 5505 port 2/2 -> catalyst 5505 port 2/1 ->
>> r4 (e0) -> r4 (to0) -> cat 3900 port 1 ->cat 3900 port 6 -> r1 (to0,
>>172.16.3.1)
>>
>>
>>I have disable ip routing on r4 and also setup bridge 1 bitswap-layer3
>>address
>>
>>the ports on the cataylst 5500 are on the same vlan
>>the port on the cataylst 3900 are also in the same vlan and setup for srt
>>
>>If I but an ip address on r4 token ring I can ping it from r1
>>
>>I'll past the configs to make it easier
>>
>>
>>r3 config
>>!
>>interface Ethernet0
>> ip address 172.16.3.2 255.255.255.0
>>
>>|
>>connnects to catalyst 5500
>>|
>>
>>r4 config
>>no ip routing
>>no ip finger
>>!
>>!
>>source-bridge ring-group 100
>>source-bridge transparent 100 3 2 1
>>!
>>!
>>interface Ethernet0
>> no ip address
>> no ip route-cache
>> bridge-group 1
>>!
>>interface Serial0
>> no ip address
>> no ip route-cache
>> shutdown
>>!
>>interface Serial1
>> no ip address
>> no ip route-cache
>> shutdown
>>!
>>interface TokenRing0
>> no ip address
>> no ip route-cache
>> ring-speed 16
>> source-bridge 1 2 100
>>!
>>ip classless
>>no ip http server
>>!
>>bridge 1 protocol ieee
>>bridge 1 bitswap-layer3-addresses
>>!
>>
>>|
>>connects to catalyst 3900
>>|
>>
>>r1 config
>>!
>>interface TokenRing0
>> ip address 172.16.3.1 255.255.255.0
>> ring-speed 16
>>
>>
>>
>>
>>.
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