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Webcast-Catalyst9k
New Member

Nexus 2k Port Channel

Hi,

I am trying to create a port channel between HP servers (4 nic) and two nexus 2k.  The server side its a single team with 803.2ad fault taulerence and on the nexus side it have created two port channel (port channel 1 for nexus 2k1 and port channel 2 for nexus 2k2) and made them ACTIVE (channel group mode active)

But when i add a another server on different ports and port channel them the same way as the above server on nexus 2k1 and nexus 2k2, the first server stops pinging. so i have to sht down the first port channel and reopen them - then it works, however it says NO NETWORK ACCESS on the servers (running windows 2008). the only way is to reboot the server  i cant be doing this on a production network.

any ideas why this would happen ?

Thanks

Everyone's tags (4)
6 REPLIES
Silver

Nexus 2k Port Channel

what is the software version on 5Ks and what models are the 5Ks and 2Ks?

Siddhartha
New Member

Nexus 2k Port Channel

we are using nexus 7k (not 5k) software version 5.1.3

nexus 2k - 2248

New Member

Nexus 2k Port Channel

Seen this behaviour on a 5k Nexus with HP servers.

They get too much probleme with servers that does not respect the RFCs with the new code.

Did you try to upgrade the drivers/teaming software and try again ?

Give us some logs on the Nexus/Server

New Member

Re: Nexus 2k Port Channel

yep tried upgrading the software but doesnt work.

i found that this is a bug on the nexus 7k where one port channel drops on adding another one.

Existing Portchannel (HIF) breaks when other PC(HIF) on same FEX flaps

Symptom:

Port-channel with more than 1 member in it going from FEX to the end hosts. Connectivity issue is seen on an existing port-channel when a new port-channel is brought up or an existing port-channel is flapped.

Conditions:

When a new port-channel is flapped or an existing one is flapped.

Workarounds:

None

Needs NX-OS updating to 5.2 or later

New Member

Re: Nexus 2k Port Channel

Can you post the bug ID?

New Member

Re: Nexus 2k Port Channel

CSCts68444

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