08-20-2008 12:58 AM - edited 03-06-2019 12:54 AM
Dear All,
At presently I am using Catalyst 3750 switch as a layer 3 switch with switch ports as a routed ports with an ip address configured on them. Now when i tried to configure CBWFQ on the switch it was accepting the commands for Class-map, policy-map but not service-policy command on the interface. I am using advanced IP services IOS.
My question to team is whether Catalyst 3750 supports queuing on its routed interfaces or not? if it supports then kindly suggest me how can i achieve this?
Thanks
Mangesh A. Bhende
08-20-2008 01:08 AM
Hi
"In software releases earlier than Cisco IOS
Release 12.2(25)SE, policy maps can be configured only on physical ports.
In Cisco IOS Release 12.2(25)SE or later, policy maps can be configured on physical ports or on SVIs".
I hope this helps.
Best regards.
Massimiliano.
08-20-2008 01:47 AM
Hi,
actually i am using 12.2(35)and still not working and there are no commands to configure set bandwidth percent on per class basis.
Please help.
Thanks
Mangesh A. Bhende
08-20-2008 01:55 AM
actually my 3570 switch configuration is as below.
access-list 101 permit ip host 10.10.10.1 host 10.10.20.1
!
class-map limit
match access-group 101
!
policy-map limit
class limit
bandwidth percent 30
!
int gi 1/0/1
no switch-port
ip address 10.10.x.1 255.255.255.0
service-policy output limit
I am unable to add service policy ont he gi 1/0/1 interface. Please help me in understanding whether switch supports this or not. If yes plz help me in doing so.
08-20-2008 02:02 AM
The 3750 switches do not support service policy input command
Narayan
08-20-2008 03:48 AM
Hi
What about service policy output to configure CBWFQ? also what about rate limit functionality?
Thanks
Mangesh A. Bhende
08-20-2008 05:34 AM
Mangesh....
Sorry i was wrong.. Actually you cannot configure service policy output command on a 3750 as it is not supported. If you try you will get an error
Warning: Assigning a policy map to the output side of an interface not supported
Service-policy input is supported and it is possible to do policing on it
Here is a sample config from one og our switches
class-map match-all voice_MP
match access-group name Voice_Traffic
class-map match-all data_MP
match access-group name Data_Traffic
class-map match-all singal_MP
match access-group name Voice_Signal
!
!
policy-map Mphasis_Traffic
class voice_MP
set dscp ef
class singal_MP
set dscp cs3
class data_MP
set dscp cs2
class class-default
set dscp default
interface GigabitEthernet1/0/1
description " To AT&T router 1 "
no switchport
ip address x.x.x.x 255.255.255.252
service-policy input Mphasis_Traffic
ip ospf authentication message-digest
ip ospf message-digest-key 10 md5 7 xxxxxxxx
ip ospf network point-to-point
speed 100
duplex full
HTH
Narayan
08-20-2008 06:10 AM
Hi Narayan,
Thanks and Yes we can set the DSCP vlaues to incomming traffic and wanted to know like can i perform policing (rate limiting)or CBWFQ on these 3750 switches?. Because i configured for rate limiting using rate limit command on the interface and it took the command but is not working.
like if i execute sh int gi 1/0/1 rate-limit command it doesnt shows any change or dropped packet statistics.
Thanks
Mangesh A. Bhende
08-22-2008 10:12 AM
You need to use output queue shaping on the egress queues to simulate policing. Ie:
srr-queue bandwidth shape 0 0 0 120
That will limit queue 4 to 1/120 of the bandwidth of the port. You then use marking to mark the traffic to the DSCP values that will fall into that queue.
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