[cisco-nas] Bonded (MLPPP) on 3640 routers -- disapointingperformance

[Oliver Boehmer (oboehmer)]

cisco-nas-bounces at puck.nether.net <> wrote on :

> Hi All,
> 
> I am running two Cisco 3640 routers with two (2) T1 WIC DSU's
> each.  My
> provider, broadwing, supplied me with bonded T1's.
> 
> Each router connects to two T1's running MLPPP.  When running bonded
> (MLPPP) I see only a 10% increase in bandwidth.
> I have tested each DSU individually and confirmed the 1.3-1.4 mbps
> connection.  However, when bonded and running MLPPP the
> bandwidth increases only to about 1.7 mbps up and 1.4 mbps down.
> 
> I believe that the 3640 is well within it's ability to handle 3 mbps
> traffic, but I am not getting that.
> 
> Does anyone have any ideas?

how did you measure the performance? How's your CPU load, and are you
interrupt-switching your traffic? Do you see many "lost fragments" or
"discared fragments" in "show ppp multilink"?

	oli