[c-nsp] ASR920 LACP and xconnect

Gert Doering gert at greenie.muc.de
Fri Aug 21 13:53:10 EDT 2020


On Fri, Aug 21, 2020 at 08:34:14AM +0300, hank at interall.co.il wrote:
> We have seen that as well.  We had that recently with a new  
> international carrier.
> Turns out when they set up the circuit on their optical switching  
> equipment (whether it be Ciena, ECI, Infinera, Cisco or whoever),  
> there are some knobs that need to be adjusted to allow through all  
> types of packets.  After having our NOC staff eat 4 hours in the wee  
> hours of the morning trying to debug why the LACP bundle would not  
> come up, a simple change by the carrier the next day had the new  
> circuits up in a matter of seconds.

LACP bundles *through* two ASR920s actually work nicely.  

Just LACP *to* an ASR920, and then forwarding said bundle via EoMPLS
(not individual VLANs, but "all of the poX interface") fails.

"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
                             Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany                             gert at greenie.muc.de
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