07-31-2012 01:32 PM
Switch is ME-3400EG-12CS-M 12.2(58)SE2 ME340x-METROIPACCESSK9-M.
I need to limit traffic on a per VLAN basis. I've read some other threads on this discussion forum and I can't seem to put all the pieces together. It feels like I'm almost there but I need a little help.
I have a 100Mbit link that is broken up into two EVCs. One for trusted traffic (VLAN 540) with a 80Mbit CIR and one for untrusted traffic (VLAN 539) with a 20Mbit CIR.
My upstream provider will silently drop any traffic that is sent over my CIR, so I need to make sure I'm not sending more than 80Mbit to VLAN 540 and 20Mbit to VLAN 539.
Gi0/1 on this 3400E connects to my upstream provider. They hand off a copper trunk port to me running dot1q.
Gi0/2 on this 3400E connects to my trusted LAN.
Gi0/3 on this 3400E connects to my untrusted WAN
class-map match-all WAN-VLAN
match vlan 539
class-map match-all LAN-VLAN
match vlan 540
policy-map WAN
class class-default
police cir 20000000
conform-action transmit
exceed-action drop
policy-map LAN
class class-default
police cir 80000000
conform-action transmit
exceed-action drop
...and I'm stuck at the next step. Since I can only control the traffic I'm sending OUT of Gi0/1 to my upstream provider I was assuming I need an output policy - but reading through the configuration guide for this 3400E is sounds like I cannot apply an output policy on a per-vlan basis.
I hope I provided enough information, I have not had much exposure to Cisco QoS so this is all new to me.
To recap, I need to make sure that VLAN 540 cannot output more than 80Mbit and VLAN 539 cannot output more than 20Mbit through Gi0/1
In case it matters, here is my config for Gi0/1:
interface GigabitEthernet0/1
switchport trunk allowed vlan 539,540
switchport mode trunk
media-type rj45
speed 100
duplex full
08-09-2012 01:36 AM
Hello,
I recommend you use two separate pmaps on the
Policy-map Intput_Inside
class WAN_VLAN
police cir 20971520
conform-action transmit
exceed-action drop
class LAN_VLAN
police cir 83886080
conform-action transmit
exceed-action drop
Interface G0/2
service-policy input LAN_Inside
Sorry If I got the values to vlans mixed up, as I'm still trying to figure how to view the original message while typing a reply using this iPad app...
Cheers.
Sent from Cisco Technical Support iPad App
08-09-2012 01:40 AM
Oops, see you have two separate interfaces.
Use this.
Policy-map WAN_Inside
class WAN_VLAN
police cir 20971520
conform-action transmit
exceed-action drop
Policy-map LAN_Inside
class LAN_VLAN
police cir 83886080
conform-action transmit
exceed-action drop
Interface G0/2
service-policy input LAN_Inside
Interface G0/3
service-policy input WAN_Inside
Sent from Cisco Technical Support iPad App
08-09-2012 07:12 AM
Thank you so much for your reply. I think half of the hits on this thread are me checking it just in case the email notification wasn't working. I'm going to try your suggestion after hours and hopefully it's exactly what I need. I'll absolutely report back!
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