Multilink PPP: how many links?

- M
- Mimmus
  
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posted
19 years ago

Thu, Apr 21, 2005 12:15 PM

Hi, I'm currently using 'multilink ppp' to link together two 2 Mbps, with optimal results. Now, I need to increase total bandwidth. Does 'multilink ppp' scale well adding two or three links?

Thanks Mimmus

- B
- Bob
  
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posted
19 years ago

Thu, Apr 21, 2005 12:30 PM

Three is safe. Four may start giving you problems depending on whether they are private lines or connecting to an ISP. Technically you can do six (or eight?) but I wouldn't recommend it.

- A
- Aaron Leonard
  
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posted
19 years ago

Thu, Apr 21, 2005 9:32 PM

Technically we support (depending on the IOS version) up to 64 or

255 member links in one MLPPP bundle.

Whether that will perform adequately is a function of:

- the router CPU power relative to the aggregate bandwidth of the links

- the variability in latency/jitter across the member links

In the o.p.'s case, I'd recommend looking at the CPU load when both links are full.

One option for reducing CPU load when running multilink CPU: disable link-layer fragmentation.

Aaron