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New Member

QoS IOS bug?

Hi,

I have a 3Mb DSL service and the virtual interface doesn't read the

bandwidth allocation correctly.

Note I use QoS on the dialer with ppp multilink which creates a MLP Bundle and a  Virtual Interface which is listed as vi3

!
interface Dialer3
description PPPoA Dialer to iExec
bandwidth 3072
ip address negotiated
encapsulation ppp
dialer pool 3
dialer idle-timeout 0
dialer-group 3
no cdp enable
ppp authentication chap callin
ppp chap hostname xxxxxx@ggg.com

ppp chap password 7 xxxxxxxxxxxx
ppp multilink
service-policy output QoS_Policy
end

sh policy-map int di3

Dialer3

  Service-policy output: QoS_Policy

    Class-map: Platinum_Queue (match-any)
      3661422 packets, 1024444024 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: ip dscp ef (46)
        3661422 packets, 1024444024 bytes
        5 minute rate 0 bps
      Match: ip precedence 5
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing
        Strict Priority
        Output Queue: Conversation 264
       Bandwidth 33 (%)
        Bandwidth 1013 (kbps) Burst 25325 (Bytes) --> correct showing
        (pkts matched/bytes matched) 0/0
        (total drops/bytes drops) 0/0

sh run int vi3

interface Virtual-Access3
bandwidth 3072
no ip address
service-policy output QoS_Policy
end

sh policy-map int vi3
Virtual-Access3

  Service-policy output: QoS_Policy

    Class-map: Platinum_Queue (match-any)
      184 packets, 33837 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: ip dscp ef (46)
        184 packets, 33837 bytes
        5 minute rate 0 bps
      Match: ip precedence 5
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing
        Strict Priority
        Output Queue: Conversation 264
       Bandwidth 33 (%)
        Bandwidth 337 (kbps) Burst 8425 (Bytes) --> Incorrect showing
        (pkts matched/bytes matched) 12194/3404574
        (total drops/bytes drops) 0/0

sh run int vi 2 --> Interface associated with PPPoATM
!
interface Virtual-Access2
bandwidth 1024
no ip address
end
!

it is showing only 1024K bandwidth allocation on the vi3 and I have 3072 configured.

Does it matter, because the site is having phone related issues.

thanks,

1 REPLY
New Member

Re: QoS IOS bug?

Hi,

I don't see drops on the priority queue, so it seems like there's enough bandwidth for the voice traffic. At least in the outbound direction.

is it possible for you to post the whole config and a 'show ip route' and 'show interface' of your outbound interface?

Marcel

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