From: Dennis J. Hartmann (dennisjhartmann@hotmail.com)
Date: Sat Oct 01 2005 - 21:09:51 GMT-3
In relation to this, does anyone know where there are some good SAP
codes for filtering in the /univercd?
The only ones I've successfully found in the documentation is from
the 12.3 Source-Route Briding Configuration Guide:
An access list that passes a frame if it is a NetBIOS frame (SAP = 0xF0F0)
An access list that passes a frame if it is an SNA frame (SAP = 0x0404)
! Access list 201 passes NetBIOS frames (command or response)
access-list 201 permit 0xF0F0 0x0001
!
access-list 202 permit 0x0404 0x0001 ! Permits SNA frames (command or
response)
access-list 202 permit 0x0004 0x0001 ! Permits SNA Explorers with NULL DSAP
-Dennis Hartmann
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
kevin gannon
Sent: Saturday, October 01, 2005 9:30 AM
To: Cisco certification
Subject: DLSW Switch redundancy ?
I have no real world SNA experience so the below maybe seem daft. I have
setup up the following
R1
------------------
interface FastEthernet0/0
no ip address
duplex auto
speed auto
dlsw transparent redundancy-enable 9999.9999.9999
dlsw transparent map local-mac 4000.0000.0099 remote-mac 0009.b7d1.6e20
R5
-------------------
interface FastEthernet0/0
no ip address
duplex auto
speed auto
dlsw transparent redundancy-enable 9999.9999.9999 master-priority 1 dlsw
transparent map local-mac 4000.0000.0002 remote-mac 0090.ed8b.7604
Both R1 and R5 are attached to the same switch in the same VLAN. On this
VLAN I have also setup a DSPU listener and on another router I have setup a
DSPU host. The DSPU traffic is travelling in DLSW and hits R1 in this case
as this is the router which won the circuit. 0090.ed8b.7604 is the host by
the way.
I can see the MAC address translation taking place on R1 :
R1#
*Mar 1 03:38:42.779: DLSW-ER:action_c(): origin mapped from (wan)
0090.ed8b.7604 ---> 0200.0000.0099
So all is well.
So in the real world if the mainframe recieves the SNA from the MAT'd
address in my case 0200.0000.0099 the MAT it should respond to the
0200.0000.0099 ?
If this is the case then in my configs MAT seems to work in only one
direction.
In fact if R1 receieves an explorer for the MAC 0200.0000.0099 it doesnt
respond and traffic is dropped.Testing using DSPU commands again a real SNA
host may behave differently ?
Maybe I should be thinking about this like static IP NAT.
Thanks & Regards
Kevin
This archive was generated by hypermail 2.1.4 : Sun Nov 06 2005 - 22:00:49 GMT-3