Tag: LACP

Switching

IBM Blade with Nortel and HP switches

RenĂ© Jorissen on July 23, 2008 • 0 Comments • Tags: #blade #channel #hp #ibm #lacp #nortel #problems #switches #vrrp

Today I had to troubleshoot an IBM Blade system. The customer was complaining that all servers, except one, weren’t able to communicate with the rest of the network. The blade system contains two Nortel switches. Each Nortel switch is connected with a 3 Gbps LACP channel to separate HP switches. The HP switches are the … Read More

Other stuff..., Switching

Port-channel Cisco vs. VMware ESX

RenĂ© Jorissen on April 4, 2008 • 5 Comments • Tags: #balancing #dst #esx #esxtop #etherchannel #ip #lacp #load #loadbalancing #mac #portchannel #src #srcdstip #srcmap

I have had different discussions with different customers about the load-balancing algorithms between a Cisco switch, configured with a port-channel and a VMware ESX server using multiple NICs. Our VMware consultants always choose Route based on IP hashes as load-balancing algorithm. This means that load-balancing happens on layer 3 of the OSI model (source-destination-IP). In … Read More