07-07-2008 01:57 AM - edited 03-06-2019 12:01 AM
hi all, i am faced with a very strange issue, ( i nearly pull my hairs out ), see i have a 1841 router with HWIC-4ESW installed. on Fa 0/0/0 i have a ADSL connection so i gave ip to int vlan 1 and my link is active now. my task is to limit ALL the traffic exiting from Vlan 1 (or Fa0/0/0) to 256 kbits/sec. Now this is my config
policy-map Shape-all-256
class class-default
shape average 256000
int vlan 1
service-policy output Shape-all-256
Now when i run show policy int vlan 1
it shows me that packets are being matched. see below
Vlan1
Service-policy output: Shape-all-256
Class-map: class-default (match-any)
37126 packets, 42189762 bytes
30 second offered rate 320000 bps, drop rate 0 bps
Match: any
Traffic Shaping
now see the offered rate its 320000bps means 320 kpbs and it rises !!
see this
sh int vlan 1
30 second output rate 685000 bits/sec, 73 packets/sec
Why is this so ?? i tried all this combination
1) i applied it on Fa0/0/0 but no use
2) in place of shape average i tried following 2 combinations as well
1) shape average 256000 32000 0
2) shape peak 256000 32000 0
but NO USE AT ALL :-(, i m in the middle of something big so kindly help me out pls, do shaping doesnt work with int vlan ?? or am i doing something wrong ?
kindly help me out
Solved! Go to Solution.
07-08-2008 04:53 AM
Hi rox,
Either you have to install HWIC-1FE or You have only rate-limit option.
HTH,
Nagendra
07-07-2008 02:01 AM
Hi,
AFAIK Traffic shaping is not supported in SVI. FOr more detail on which features are supported please see the below link,
http://www.cisco.com/en/US/prod/collateral/routers/ps5853/prod_white_paper0900aecd8064c9f4.html
HTH,
Nagendra
07-07-2008 02:05 AM
Hi,
AFAIK Traffic shaping is not supported in SVI. FOr more detail on which features are supported please see the below link,
http://www.cisco.com/en/US/prod/collateral/routers/ps5853/prod_white_paper0900aecd8064c9f4.html
HTH,
Nagendra
07-07-2008 02:06 AM
Hi,
AFAIK Traffic shaping is not supported in SVI. FOr more detail on which features are supported please see the below link,
http://www.cisco.com/en/US/prod/collateral/routers/ps5853/prod_white_paper0900aecd8064c9f4.html
HTH,
Nagendra
07-07-2008 02:31 AM
Thanks Nagendra, thanks alot, now kindly tell me wat to do in this case, kindly help me achieve my goal
i want to shape all traffic to 256 kbits and then apply CBWFQ so that my server traffic gets 128 kbps while others may get the rest. Now this is the config i have done successfully on my normal layer 3 Fastethernet ports
Class-map Server-Traffic-in
Match access-group name Server_Traffic
Policy-map Server-Traffic
Class Server-Traffic-in
Bandwidth 128
Class class-default
Bandwidth 64
Policy-map Shape-all-256
Class class-default
Shape average 256000
Service-policy Server-Traffic
Now as we know that i cant apply this on an SVI so wat to do now to achieve this goal ?
Thanks alot for prompt response
07-07-2008 03:56 AM
Hi,
Can you please explain why you need to shape traffic at your LAN interface?. From your description, I understand HWIC-4ESW is your LAN side and ADSL is your WAN side. Normally shaping will be enabled at your WAN side.
If you need to limit your traffic at your LAN side, the only option I can see is rate-limit.
Regards,
Nagendra
07-07-2008 08:30 PM
Dear Nagendra, this is my scenario
on 1841 you know that we have to Fa interfaces, on Fa 0/1 i have LAN, on Fa 0/0 i have Wimax link, and now to accomodate redundant link via ADSL we have plugged it in HWIC-4ESW, now as you know that link between ADSL modem is 10/100 Base T, where is the CIR is 256 kb, so in order to apply my qos i need to first shape the traffic to meet this CIR,
I hope you get an idea, kindly guide me how to do it
07-07-2008 11:58 PM
As you have to connect ADSL modem, I feel HWIC-4ESW is not the one you need to use. You may have to use HWIC-1FE. This is a routed port interface and this supports shaping.
HTH,
Nagendra
07-08-2008 12:46 AM
Dear Nagendra, we already have 100+ branches that are already using HWIC-4ESW, so we cant change it to 1FE !!, does it mean i am hanged up ??
07-08-2008 04:53 AM
Hi rox,
Either you have to install HWIC-1FE or You have only rate-limit option.
HTH,
Nagendra
07-22-2008 11:20 PM
Hi Rox,
I have faced the same problem, having HWIC-4ESW and not being able to do QOS.
What i have done is like this, i connecte F0/1 of the router directly to the HWIC-4ESW, in this way you can see it like having the HWIC-4ESW as an outside switch, on fast 0/1 you configure now subinterfaces, it is also good to create a VRF and put all ports of the hwic-4esw on that vrf in this way you divide the switch completely from the global routing and arp table, do not create vlan interfaces.
After all this in subinterfaces you can apply QOS.
Let me know if it is not clear enough.
best regards
Burim
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: