[c-nsp] pppoe, traffic-shaping and cef ?

Alexandre Snarskii snar at paranoia.ru
Tue Nov 1 08:00:41 EST 2005


Hi!

Are there any hints to make traffic-shaping work on pppoe virtual-access
interfaces with cef running ? 
Now i'm able to get it work only without cef, with process-switching, 
but this leads to performance degradation...  

Router is as5300, 12.3(15b), ip+. 

configuration is pretty simple:

interface FastEthernet0.66
 encapsulation dot1Q 66
 pppoe enable group NAME
 no snmp trap link-status
 arp timeout 5

bba-group pppoe NAME
 virtual-template 14
 sessions per-mac limit 1
 sessions per-mac throttle 5 10 60

interface Virtual-Template14
 description <client>
 mtu 1492
 ip unnumbered FastEthernet0
 no ip route-cache
 peer default ip address pool <pool>
 ppp authentication pap

traffic-shaping propagated with radius on per-user basis, 
example of derived interface : 

interface Virtual-Access90
 ip unnumbered FastEthernet0
 rate-limit input access-group 101 64000 8000 16000 conform-action transmit exceed-action drop
 no ip route-cache
 traffic-shape group 102 1000000 25000 25000 1000
 traffic-shape group 103 64000 8000 8000 1000
end

where access-list 102 is acccess-list permitting access to our internal
networks, and 103 is 'match-any' access-list, 

gw033-273#show ip access 103             
Extended IP access list 103
    10 permit ip any any (23004159 matches)

gw033-273#show ip access 102
Extended IP access list 102
    10 permit ip 217.170.80.0 0.0.0.255 any
    20 deny ip any any (23022329 matches)

PS: i also tried to configure shaping with service-policy like that: 

gw033-273#show policy-map 64k-out
  Policy Map 64k-out
    Class <...>
      Traffic Shaping
         Average Rate Traffic Shaping
         CIR 5000000 (bps) Max. Buffers Limit 1000 (Packets)
    Class class-default
      Traffic Shaping
         Average Rate Traffic Shaping
         CIR 64000 (bps) Max. Buffers Limit 1000 (Packets)

this policy applies to interface, but shaping does not works. 



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