From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Nov 12 2004 - 17:47:53 GMT-3
Here's a challenge for all you ccie wannabe's and current ccie's.
MQC was used to set the DE bit on ping traffic with the following class-map:
class-map PING
match prot icmp
policy-map PING
set fr-de
int s0/0
service-policy out PING
It didn't work. So begins the troubleshooting.
Maybe, the service policy has to be within a map-class like this:
map-class fram PING
service-policy PING
int s0/0
fram class PING
Nope, this doesn't work either. What could be wrong?
How about if the class-map is applied on a p2p sub?
Nope, doesn't work.
Could it NBAR? Let's see.
1st, create the acl like this
access-list 100 perm icmp any any
Now, change the class-map to look like this:
class-map PING
match access-group 100
And, test again.
Hurrah !!! It works.
Who knows why?
Here's the output of show ver:
r1#sh ver
Cisco Internetwork Operating System Software
IOS (tm) 3600 Software (C3640-JK9O3S-M), Version 12.3(9), RELEASE SOFTWARE
(fc2)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Fri 14-May-04 13:16 by dchih
Image text-base: 0x60008B00, data-base: 0x620DE000
ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE
(f
c1)
r1 uptime is 5 hours, 58 minutes
System returned to ROM by power-on
System image file is "flash:c3640-jk9o3s-mz.123-9.bin"
Tim
This archive was generated by hypermail 2.1.4 : Thu Dec 02 2004 - 06:57:42 GMT-3