SUMMARY: packet priority question

From: Michel Pilon (pilonm@CCG.RNCan.gc.ca)
Date: Fri Oct 25 1996 - 15:51:26 CDT


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Hi dear Sunners,

This list is great :-)

Here is the original question:

> We would like to increase the priority to 3270 packets over our Frame Relay
> connection over the other packets. i.e. At each time our router see
>a 3270 packet, it will stop (by examples) the ftp packets.

> The real problem is that we have some
> users doing interactive work using a remote 3270 application and the
> response time is not acceptable. We are doing a lot of FTP transfers in
> the same time and we use the same data link. So I thougth that maybe we can
> configure our router and firewall to give higher priority for the 3270
> packets but I don't know how.

> Any ideas? Is it something we can do?

> We have a Cisco 2501 router and have firewall-1 installed on a Sparc 10.
> I supposed also that we have to configure the remote router.

A big THANK YOU to Reto Lichtensteiger who send me the exact syntax to do it.

(And that works :-) )

Here is his mail:

     You're in luck <g>

     Cisco supports Priority Queueing

     Syntax is:

        priority-list <list-#>
                 protocol <prot-name>
                 {high | medium | normal | low}
                      <queue-keyword>
                 <keyword-value>

     So, for example, making telnet have faster response time, ftp-data low
     and all else normal:

        priority-list 1 protocol ip high tcp 23
        priority-list 1 protocol ip low tcp 20
        priority-list 1 default normal

     Then tie it to the interface with this

        interface serial 0
         priority-group 1

----------------------------------------------

Thank you very much to the following persons:

GK Subrahmanian <gks@cadence.com>
Reto Lichtensteiger <rali@meitca.com>
jeffw@smoe.org (Jeff Wasilko)
gibian@stars1.hanscom.af.mil (Marc S. Gibian)



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