[c-nsp] Re: Cisco 3750 egress rate-limit

Kanagaraj Krishna kanagaraj at aims.com.my
Sun Sep 25 05:25:45 EDT 2005


Hi,
   I've setup a 7206 NPE-G1 with one of its gigE interface connected to a 
Catalyst WS-C3750-24TS with each port assigned to specific VLAN interface. I 
need to rate limit the traffic on each port to 2Mbps ingress (in) and egress 
(out). I've tried using the rate-limit command on each VLAN interface but the 
MRTG shows that its not working as traffic goes more that specified.

rate-limit input 2048000 1500 2000 conform-action transmit exceed-action 
drop
rate-limit output 2048000 1500 2000 conform-action transmit exceed-action 
drop 

I've also tried policing but when its applied to the specific interface 
(physical or VLAN) using "service-policy output xxxx", i get the error 

"Warning: Assigning a policy map to the output side of an interface not 
supported "

%QOSMGR-4-CLASS_NOT_SUPPORTED: Classification is not supported in classmap 
DSCPOLICE

I've tried looking for solutions but at the moment there is not much available 
even on the cisco web site. I really need to get this up and running as soon 
as possible. Hope to get some help in resolving this issue. Thanks




****************************************************************************
Note: For further reference i've attached the config and sh version

mls qos aggregate-policer 2Mb-ipolicer 2048000 8000 exceed-action drop
mls qos aggregate-policer 2Mb-epolicer 2048000 8000 exceed-action drop
mls qos
!
mac access-list extended test
 permit any any

access-list 101 permit ip any any

class-map match-all limit_2Mb
  match access-group 101
class-map match-all DSCPOLICE
  match ip dscp default  63
class-map match-all mac_traffic
  match access-group name test
!
!
policy-map 2Mb_ingress
  class limit_2Mb
    police aggregate 2Mb-ipolicer
  class mac_traffic
    police aggregate 2Mb-ipolicer

policy-map 2Mb_egress
  class DSCPOLICE
    police aggregate 2Mb-epolicer
!

#sh version
Cisco Internetwork Operating System Software
IOS (tm) C3750 Software (C3750-I5-M), Version 12.2(20)SE3, RELEASE SOFTWARE 
(fc1
)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Sun 17-Oct-04 01:18 by antonino
Image text-base: 0x00003000, data-base: 0x00B81800

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(11r)AX, RELEASE 
SOFTWARE
 (fc1)

System image file is "flash:/c3750-i5-mz.122-20.SE3/c3750-i5-mz.122-20.SE3.bin"
cisco WS-C3750-24TS (PowerPC405) processor (revision A0) with 118784K/12280K 
byt
es of memory.

Configuration register is 0xF

Thanks.
-- 
Kanagaraj Krishna


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