[alcatel-nsp] LAG on 7450 towards Juniper router
rene.skjoldmose at gmail.com
Sat Sep 19 11:06:11 EDT 2009
I have a customer that has 2x1Gbit connections in a LAG bundle.
I provide a VPRN service to the customer using an epipe from the 7450
LAG port to a spoke-sdp on the VPRN interface on a 7750.
The problem is that when i look at the MRTG graph of the 7450 LAG port
it stops at ~980mbit/s, and thus leaves me to believe that proper load
balancing is not taking place.
The 980 mbit/s are outgoing traffic from my network towards a Juniper
router at the customer premises.
The customer configures his own equipment.
Both ports on the 7450 are up, and member of the LAG pool.
The strange thing is that when i use the "monitor port x/x/x y/y/y rate
interval 3" i get values that indicate near perfect balancing of the
traffic in both directions, which does not make sense when looking at
the ~980mbit/s max throughput.
How does the LAG load balancing algorithm work in the 7450?
From what i can see, it is no longer possible to get snmp values from
the physical ports once they are in a LAG pool - is that correct?
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