07-02-2002 07:22 AM - edited 03-01-2019 11:20 PM
I have a customer who is trying to setup various Class of Services by tagging packets with specific TOS bit patterns. Three CoS precedences are defined: flash, immediate, and routine. Although packets are being marked, the marked TOS fields do not appear to make any kind of sense. A sniffer capture shows the following:
flash ==> TOS 0xC0 ?? (expected 0x60)
immediate ==> TOS 0x08 ?? (expected 0x20)
routine ==> TOS 0x00 (OK)
Here is a snippet of the configuration. Any thoughts?
=======================================
version 12.1
....
boot system flash c2600-i-mz.121-14.bin
interface Serial0/0.2 point-to-point
....
ip policy route-map IPFR
...
access-list 5 permit 172.21.1.12
access-list 5 permit 172.21.1.15
access-list 5 permit 172.21.12.104
access-list 5 deny any
access-list 6 permit 172.21.12.104
access-list 6 deny any
access-list 10 permit 10.254.251.1
access-list 10 deny any log
access-list 150 permit tcp any eq telnet any
access-list 151 permit tcp any range ftp-data ftp any
access-list 152 permit tcp any eq www any
route-map IPFR permit 10
match ip address 150
set ip precedence flash
!
route-map IPFR permit 20
match ip address 151
set ip precedence immediate
!
route-map IPFR permit 30
match ip address 152
set ip precedence routine
07-09-2002 01:14 PM
Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center (http://www.cisco.com/tac) or speak with a TAC engineer. You can open a TAC case online at http://www.cisco.com/tac/caseopen
If anyone else in the forum has some advice, please reply to this thread.
Thank you for posting.
07-09-2002 11:43 PM
Hi,
the config you presented is only to mark certain pakets with a certain ip-prec value.
if this traffic enters a providers cloud, he can set different actions on the diferent prec-values.
For example queueing, drop, ....
This means here you only mark pakets - in the ip-cloud you can react on this values !
Hope this helps -
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