I have a pair of Nexus 7000 (NX-OS 6.2) in vpc domain, each of them equipped (in a vDC different from the admin one) with a Nexus 2248TP FEX.
On the two fex I created a 4xGbE vPC (2 ports on each FEX) connected to an EMC DataDomain device, that replicates storage data to another DataDomain located in a different site.
As both the source and destination IP and MAC address are always the same in the replication traffic, I changed the load balancing method on both Nexus 7000 Admin vDC to XOR source and destination L4 ports.
The result is that the traffic is balanced always on the same two ports of the same FEX, and is not sent over the vPC peer-link to the other two ports on the second FEX, even if there are more than 8 sessions with different l4 source ports.
Does anyone ever had the same problem, or have any suggestion?
The traffic is not supposed to go over the VPC peer link. If you want to have load balancing over 4 link, you need to connect all 4 links from the same FEX to one 7k, as dual FEX uplink to 2 different 7ks is not supported.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.