[c-nsp] Cisco MultiLink PPP

[Bruce Robertson]

Don't try a 2514; not enough CPU.  It'll work great on a 2621.  We've bundled 
four links on a 2651 with no problems.

--
Bruce Robertson, President/CEO                           +1-775-348-7299
Great Basin Internet Services, Inc.    company-wide fax: +1-775-348-9412
http://www.greatbasin.net                       my efax: +1-775-201-1553

Lawrence Wong wrote:
> --- "Oliver Boehmer (oboehmer)" <oboehmer at cisco.com>
> wrote:
> 
>>It is supported on all low- to mid-end routers up to
>>and including 7500,
>>check the release notes and/or feature navigator for
>>higher-end as well
>>as hardware-based platforms
> 
> 
> Do you have any idea how well it will work on
> "ancient" hardware like the 2514 and 2621? Cos
> currently the E1 (sorry for the earlier typo of T1),
> which connects my warehouse to my head office is
> terminated at these two equipment (2514 at warehouse &
> 2621 at head office).
>  
> 
>>>Under MLPPP, will traffic be distributed amongst
>>
>>both
>>
>>>links (i.e. I can download at max of 4Mbps) or am
>>
>>I
>>
>>>limited to the max of each link (i.e. I can
>>
>>download
>>
>>>at max of 2Mbps).
>>
>>A single session can use up to 4Mbps. MLPPP will
>>distribute the packets
>>over both links making sure to preserve the packet
>>sequence.
> 
> 
> That's cool. It beats running OSPF over multiple
> links.
> 
> What's the lead time like to detect a link failure in
> a MLPPP bundle?
> 
> 
>>>How processor intensive is MLPPP?
>>
>>In halfway recent code it is CEF switched and
>>2x2Mbps should be a
>>non-issue.. You can optimize by disabling
>>fragmentation, but it should
>>not be needed to do this.
> 
> 
> Do you have any idea how scalable it can get for the
> platform (2514 & 2621) metioned above? How many E1's
> can I MLPPP before perform degrades? 3 x 2Mbps? 4 x
> 2Mbps?
> 
> Will using Cisco 1845 be a better choice for 3 or more
> 2Mbps MLPPP links? I am running just plain WAN
> connectivity with no bells and whistles.
> 
> 
>>>Are there any caveats to look out for?
>>
>>you want to make sure the delay over both links is
>>somewhat equal.
>>Otherwise MLPPP could run out of buffers trying to
>>reassemble fragments
>>or preserving the packet order. 
> 
> 
> Thanks,
> 
> 
> 
> 		
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