[c-nsp] Cisco 3750 traffic limits
Bulgaria Online - Assen Totin
assen at online.bg
Sun Mar 13 07:08:02 EST 2005
Hi all,
I have a Cisco 3570 running a bunch of dot1q VLANs over a single gigabit
Ethernet link. Each VLAN carries a BGP session and all sessions are set up
against a Loopback0 interface of the Cisco 3750.
It works fine, but I cannot manage to get some things work, in particular,
traffic limiting. I don't need anything fancy, just limit the outgoing
bandwidth of every VLAN (the traffic from Cisco 3750 to the customer) to
some different value (1 Mbps, 5 Mbps, 10 Mbps...).
The "rate-limit" comamnd applies both "input" and "output" to a VLAN
interface, but it doesn't affect the traffic rate at all. (The same command
works pretty fine on my Cisco 7200):
rate-limit input 1000000 1500 2000 conform-action transmit exceed-action
drop
rate-limit output 1000000 1500 2000 conform-action transmit exceed-action
drop
I tried to achive bandwidth limitation with a simple policy map like this:
access-list 166 permit ip any any
!
class-map match-all test
description Test class map
match access-group 166
!
policy-map test
description Test policy map
class test
police 1000000 8000 exceed-action drop
but when I try to apply it to the VLAN interface, I get strange errors:
peers(config)#int vlan 1033
peers(config-if)#service-policy input test
%QoS: policy-map with police action at parent level not supported on
Vlan1033 interface.
peers(config-if)#service-policy output test
police command is not supported for this interface
Configuration failed!
Warning: Assigning a policy map to the output side of an interface not
supported
The latter error apperars also when I try to apply the poliy map OUT on the
Gigabit (physical) interface.
The system runs the latest available IOS - 12.2(25)-SEA. Below is a part of
the configuration. Any comments and suggestions will be much appreciated.
peers#sh ver
Cisco IOS Software, C3750 Software (C3750-I5-M), Version 12.2(25)SEA,
RELEASE SOFTWARE (fc)
cisco WS-C3750G-24TS (PowerPC405) processor (revision H0) with
118784K/12280K bytes of memory.
peers#sh run
version 12.2
vtp mode transparent
!
interface Loopback0
ip address aaa.bbb.ccc.ddd 255.255.255.252
!
interface GigabitEthernet1/0/25
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 221,454,512,714,718,774,775,880,901,991
switchport trunk allowed vlan add 1026,1029-1037,1039-1043,1045-1047
switchport mode trunk
ip verify source
!
interface Vlan1
ip address aaa.bbb.ccc.ddd 255.255.255.0
ip flow ingress
!
interface Vlan221
ip address aaa.bbb.ccc.ddd 255.255.255.252
!
...
!
interface Vlan1047
ip address aaa.bbb.ccc.ddd 255.255.255.252
!
router bgp ABCDE
no synchronization
bgp router-id aaa.bbb.ccc.ddd
network aaa.bbb.ccc.0
...
network aaa.bbb.ccc.0
!
ip default-gateway aaa.bbb.ccc.ddd
ip classless
!
ip flow-export version 5
ip flow-export destination aaa.bbb.ccc.ddd xyz
Assen Totin
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