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Cisco 828 QoS

 
 
BlueFire
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      02-01-2006
Well the question is Can "working" QoS or queuing work on a 828 router?
As i havn't played with QoS much.

I tryed place the "service-policy output Voice-policy" on the dailer
interface. but after do some show commands no traffics is being place in
the class. Place in on the PVC and the ATM subinterface and the show
commands looks like it was working but after testing (copy a large File
across the wan) and pinging a remote device (ICMP packets were matched
as voice traffic).

I also tryed setting up Priority Queuing and apply to both the ATM
interface and the dialer interface, but after checking "show interface"
looks like no packets were being queued.

Thanks
 
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anybody43@hotmail.com
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      02-01-2006
> Well the question is Can "working" QoS or queuing work on a 828 router?
> As i havn't played with QoS much.


LLQ works on an 837. However at present I am struggling with a 3725. It
is
NOT working.

It seems that certain queuing may only work on dialer interfaces if
Multilink
PPP is configured on some platforms!!!!

#sh policy-map int d1
Dialer1

Service-policy output: PM-tointernet

Class-map: CM-voice (match-any)
878199 packets, 188753004 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: dscp ef
817013 packets, 180365508 bytes
5 minute rate 0 bps
Match: dscp cs3
61186 packets, 8387496 bytes
5 minute rate 0 bps
Queueing
Strict Priority
Output Queue: Conversation 136
Bandwidth 270 (kbps) Burst 6750 (Bytes)
(pkts matched/bytes matched) 0/0
(total drops/bytes drops) 0/0

Class-map: class-default (match-any)
2063027 packets, 519213659 bytes
5 minute offered rate 7000 bps, drop rate 0 bps
Match: any
Queueing
Flow Based Fair Queueing
Maximum Number of Hashed Queues 128
(total queued/total drops/no-buffer drops) 0/0/0

As you can see the packets match the policy but there is no
queueing/management.

class-map match-any CM-voice
match dscp ef
match dscp cs3
!
!
policy-map PM-tointernet
class CM-voice
priority 270
class class-default
fair-queue
queue-limit 10


interface Dialer1
bandwidth 512
ip address negotiated
ip access-group 190 in
ip nat outside
ip virtual-reassembly
service-policy output PM-tointernet
encapsulation ppp
ip route-cache flow
dialer pool 1
dialer-group 1
crypto map DELETED

 
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BlueFire
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      02-02-2006
wrote:
>>Well the question is Can "working" QoS or queuing work on a 828 router?
>>As i havn't played with QoS much.

>
>
> LLQ works on an 837. However at present I am struggling with a 3725. It
> is
> NOT working.
>
> It seems that certain queuing may only work on dialer interfaces if
> Multilink
> PPP is configured on some platforms!!!!
>
> #sh policy-map int d1
> Dialer1
>
> Service-policy output: PM-tointernet
>
> Class-map: CM-voice (match-any)
> 878199 packets, 188753004 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: dscp ef
> 817013 packets, 180365508 bytes
> 5 minute rate 0 bps
> Match: dscp cs3
> 61186 packets, 8387496 bytes
> 5 minute rate 0 bps
> Queueing
> Strict Priority
> Output Queue: Conversation 136
> Bandwidth 270 (kbps) Burst 6750 (Bytes)
> (pkts matched/bytes matched) 0/0
> (total drops/bytes drops) 0/0
>
> Class-map: class-default (match-any)
> 2063027 packets, 519213659 bytes
> 5 minute offered rate 7000 bps, drop rate 0 bps
> Match: any
> Queueing
> Flow Based Fair Queueing
> Maximum Number of Hashed Queues 128
> (total queued/total drops/no-buffer drops) 0/0/0
>
> As you can see the packets match the policy but there is no
> queueing/management.
>
> class-map match-any CM-voice
> match dscp ef
> match dscp cs3
> !
> !
> policy-map PM-tointernet
> class CM-voice
> priority 270
> class class-default
> fair-queue
> queue-limit 10
>
>
> interface Dialer1
> bandwidth 512
> ip address negotiated
> ip access-group 190 in
> ip nat outside
> ip virtual-reassembly
> service-policy output PM-tointernet
> encapsulation ppp
> ip route-cache flow
> dialer pool 1
> dialer-group 1
> crypto map DELETED
>


Thats basic what my config looks like but i have tryed appling its tot
he PVC. Traffic get matched but looking at the traffic across the WAN
the Voice (or ICMP when testing) dont get placed first.

And even with

access-list 198 permit udp any any range 16384 32776
access-list 198 udp any any eq 5060
access-list 198 tcp any any eq 5060
(when testing i put)access-list 198 icmp any any

access-list 199 tcp any any eq 23
access-list 199 tcp any any eq 22

priority-list 1 protocol ip high list 198
priority-list 1 protocol ip medium list 199

interface dialer 2
priority-group 1

or even place it on the ATM interface, doing show interface so no
packets are getting queued

Need help with VOip for a SHDSL site, do the new 878 support QoS and
does it WORK. or any other SHDSL router to looks at for QoS support.
 
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anybody43@hotmail.com
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      02-03-2006
There are many documents discussing this on CCO.

It seems than on some platforms dialers only do QoS if
multilink PPP is configured.

If you have physical access (to fix it if you lose connectivity)
try turning on MPPP. You ISP may support it and you may be
up and running.

The Docs refer to 2600 and 3600 but I am not able to get this
LLQ going on a 3725 over a Dialer.

I am pretty sure that I have seen this working on an 837.

 
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