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DLSW and encapsulation ISL

Hello at all

HW: cisco Router 2650 version 12.2(7)

Situtation of the Configuration

on the ethernet interface we have configurated VLANs (encapsulation ISL)

and DLSw

global parameters:

source-bridge ring-group (XXXX)

dlsw local-peer peer-id (Local Peer IP address)

dlsw remote-peer 0 tcp (Remote Peer IP address)

dlsw bridge-group 1

bridge 1 protocol ieee

on the ethernet Interface of the Router (VLAN 1) we have configurate

bridge-group 1

The Mainframe is in VLAN 1

The peer is connected but the circuit will not. (he become a Time expired)

has anybody an idea (is it possible to connect SNA over VLANs)

Best regards



Re: DLSW and encapsulation ISL

If there is no token ring, you actually don't need the source-bridge ring-group command. Did you place the bridge-group 1 on the subinterface or the interface? Dot1q and dlsw don't work together, but isl and dlsw+ do.

Does you config look something like this:


dlsw local-peer peer-id

dlsw remote-peer 0 tcp

dlsw bridge-group 1


interface FastEthernet0/0

no ip address

no ip directed-broadcast


interface FastEthernet0/0.1

encapsulation isl 1

no ip redirects

no ip directed-broadcast

bridge-group 1

bridge-group 1 spanning-disabled


New Member

Re: DLSW and encapsulation ISL

hi steve

thats correct.

- ip routing and so on is all fine.

- also the mac address is checked.

- the peer is connected.

but the circ will not came up

in the debugging I get after many XID tx and rx a time expired (HLTN)

tell me what you need to know

best regards Dennnis

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