nV support for A9K-4X100GE cards

[Dmitry Kiselev]

Hi!

I've found that new A9K-4X100GE cards have no nV technology support. Are there any plans to add it in future SW versions? Or nV will be dropped in all new products as EoL?

Thanks!

[tkarnani]

Satellites are supported 9000v or NCS5k with 10G or 100G ports

https://www.cisco.com/c/en/us/products/collateral/routers/asr-9000-series-aggregation-services-routers/datasheet-c78-734909.html

Clusters however are end of life.

https://www.cisco.com/c/en/us/products/collateral/routers/asr-9000-series-aggregation-services-routers/eos-eol-notice-c51-739355.html

[Dmitry Kiselev]

Hi!

According to latest IOS XR configuration guide nV chapter, Octane is the latest LC architecture with nV satellite support. Skyhammer cards (A99-12X100GE, A9K-4X100GE) don't have such support. The question is: Does it related to smaller TCAM size (and nV-sat impossible by design) or just policy/marketing decision (which might be changed in future)?

Thanks

[Aleksandar Vidakovic · Accepted solution]

hi Dmitry,

TCAM size dictates the number of main interfaces and sub-interfaces can be created on the NP. Without the external TCAM there's not enough entries to support all satellite ports. Technically many things are possible, but sometimes they don't make much sense on practical side. This is the case with satellite support on Skyhammer cards. We could do it, but you the benefits would be questionable.

It's interesting that you wrote that Octane is the latest LC architecture with nV satellite support. Powerglide  line cards (A9K-24X10GE-1G, A9K-48X10GE-1G) are also Tomahawk generation and they support nv satellite.

To see how many TCAM entries exist for interfaces/sub-interfaces run the "sh prm server tcam summary L2-LT np0 location <location>". "Partition ID: 0" shows the max number of main interfaces per NP.

/Aleksandar

[Dmitry Kiselev]

Thanks a lot for your explanation! It is pretty clear now