From: Simon Baxter (Simon.Baxter@xxxxxxxxxxxxxx)
Date: Mon Oct 09 2000 - 21:01:33 GMT-3
Priority ports are 2065, 1981, 1982, 1983 for high med norm and low -
according to :
http://www.cisco.com/warp/public/cc/pd/ibsw/ibdlsw/prodlit/dlsw5_rg.htm
So I guess it must be a typo!
According to the LSAP list on CCO, SNA uses 04 & 05 for individual and group
path control, but also uses 08, 09, 0C & 0D. I too would like to know which
LSAP numbers are used for which SNA function. I'll do some digging - does
anyone else know??
-----Original Message-----
From: Jack Heney [mailto:jheneyccie@hotmail.com]
Sent: Tuesday, October 10, 2000 8:32 AM
To: ccielab@groupstudy.com
Subject: DLSW prioritization
The following is from Cisco's web site:
source-bridge ring-group 100
dlsw local-peer peer-id 4.0.0.4
dlsw remote-peer 0 tcp 5.0.0.5 priority
!
interface TokenRing0
ring-speed 16
sap-priority 1
source-bridge 1 1 100
source-bridge spanning
ip policy route-map test
!
sap-priority-list 1 high ssap 4 dsap 8
!
interface Serial 0
ip address 20.0.0.1 255.0.0.0
!
interface Serial 1
ip address 30.0.0.1 255.0.0.0
ip local policy route-map test
!
access-list 101 permit tcp any any eq 2065
access-list 102 permit tcp any any eq 1981
access-list 102 permit tcp any eq 20 any
!
route-map test permit 3
set default int serial 0
!
route-map test permit 2
match ip address 102
set ip next-hop 30.0.0.7
!
route-map test permit 1
match ip address 101
set ip next-hop 20.0.0.6
The text that goes qith this example indicates that the point is to send
interactive SNA traffic (hiogh priority) over one link and file transfers
(SNA or FTP - low priority) over another. I have 2 questions:
1. Can someone give a brief explanation of when SNA uses certain sap's...I
though SNA could be filtered across the board using an access list with
0x0404 0x0101, which would seem to indicate that 04 and 05 are the sap's
used by SNA...According to the above example, 0804 (dsap ssap) is
interactive SNA and 0808 is SNA file transfers.
2. Wouldn't the line:
sap-priority-list 1 low ssap 8 dsap 8
put traffic into the low-priority DLSW pipe, which I thought used tcp port
1983? In the above example, they use this line, but then traffic is policy
routed using access-list 102, which specifies port 1981. Is this just a
typo in Cisco's config, or is 1981 low priority and 1983 normal priority?
Thanks in advance,
Jack
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:25:25 GMT-3