I've recently deployed a pair of Nexus 3064s in a VPC for core routing/switching. Since I've deployed these switches, we've experienced intermittent packet loss on our ESX devices. I suspect some kind of oddity on the ESX servers but I'm curious to know what is the correct configuration for the ESX hosts from a Load Balancing perspective?
Should our server team have them configured in Redundancy mode a.k.a Active/Passive links or should they configure as port-channel on their servers?
To drawn this picture out, the ESX servers are attached to a single 4948 within a rack but have multiple links on this switch. The 4948 is multihomed to the 3064s via a single port-channel with VPC enabled.
Redundancy mode vs port-channel is really dependent upon what the hosts support but in general port-channels provide you with additional bandwidth. I believe with ESX you may need to use mode on.
In regards to the intermittent packet loss, I would start with the basic: sho int count, check spanning tree, cpu, log, qos etc. Might have to do sniffer traces. Intermittent issues are the toughest ones to troubleshoot.
Here we will go over the configuration needed for MACsec Switch to Switch using a Pre-Shared Key. Topics that will be covered include, command usage, key derivation and key server election. Please see the MACsec History and Terminology for ...
With increased deployments of high-performance connectivity solutions there is need to maximize security, network speed, bandwidth and efficiency. Fiber to the office/desk etc. (FTTx) is not a new concept, however it is viewed as a key pillar in driving t...
What is PON ?
A Passive Optical Network (PON) is a point-to-multipoint architecture which use a single strand of single mode fiber to deliver voice, video, data to several users (or devices). PON network uses passive splitters in the optical distribution ...
This will be the first in a series of documents I write on MACsec. Some of the other topics I’ll be writing are:
As the configuration will become increasingly complex, I suggest you read them in order.
Configuring MACsec Switch to Switch with Pre-...