[c-nsp] mlppp performance

[Ben Steele]

One bit of advice I can offer to this is make sure all 4 lines are  
exactly the same speed, shape them if you have to, mis-matched speed  
on mlppp can result is sub optimal performance for the entire bundle.

Ben

On 01/04/2008, at 4:13 AM, Adam Greene wrote:

> Hi,
>
> I'm bonding (4) aDSL lines at a customer location and am only seeing  
> about 66 - 75% of the performance I was expecting. Is this normal? I  
> wonder if an IOS upgrade will help things.
>
> I actually have two customer locations experiencing the same issue.  
> The client routers are 2811's with 512MB RAM running IOS 12.3(8)T6.  
> They are plain vanilla configs, running at ~2% CPU with lots of  
> memory to spare. The head end is a 7205 / NPE200 w/ 128MB RAM and  
> IOS 12.3(15b), terminating about 100 ATM aDSL lines. CPU is at about  
> 14% and memory utilization is low.
>
> The head end reports:
>
> Multilink3,
>  Bundle up for 11:29:07, 1/255 load
>  Receive buffer limit 48768 bytes, frag timeout 1000 ms
>    0/0 fragments/bytes in reassembly list
>    5 lost fragments, 1046793 reordered
>    0/0 discarded fragments/bytes, 0 lost received
>    0x30FA03 received sequence, 0x4C98A7 sent sequence
>  Member links: 4 active, 1 inactive (max not set, min not set)
>    Vi7, since 11:29:07
>    Vi8, since 11:29:05
>    Vi4, since 11:28:59
>    Vi9, since 11:27:50
>    Vt3 (inactive)
>
> Customer end:
>
> Multilink1,
>  Endpoint discriminator is xxx
>  Bundle up for 11:28:50, 7/255 load
>  Receive buffer limit 48768 bytes, frag timeout 1000 ms
>    0/0 fragments/bytes in reassembly list
>    137 lost fragments, 1453838 reordered
>    86/57363 discarded fragments/bytes, 0 lost received
>    0x4C7B86 received sequence, 0x30F120 sent sequence
>  Member links: 4 active, 1 inactive (max not set, min not set)
>    Vi4, since 11:28:48
>    PPPoATM link, ATM PVC 0/35 on ATM0/3/0
>    Packets in ATM PVC Holdq: 0 , Particles in ATM PVC Tx Ring: 0
>    Vi5, since 11:28:42
>    PPPoATM link, ATM PVC 0/35 on ATM0/0/0
>    Packets in ATM PVC Holdq: 0 , Particles in ATM PVC Tx Ring: 0
>    Vi6, since 11:27:33
>    PPPoATM link, ATM PVC 0/35 on ATM0/2/0
>    Packets in ATM PVC Holdq: 0 , Particles in ATM PVC Tx Ring: 0
>    Vi3, since 11:28:50
>    PPPoATM link, ATM PVC 0/35 on ATM0/1/0
>    Packets in ATM PVC Holdq: 0 , Particles in ATM PVC Tx Ring: 0
>    Vt1 (inactive)
>
> Thanks for any insight.
> Adam
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