Tag: mac

Configuration Example, Security

MAC Authentication Bypass

RenĂ© Jorissen on June 17, 2008 • 0 Comments • Tags: #8021x #authenticate #bypass #caveats #guestvlan #mac #nac #nap

NAC (for Cisco – Network Admission Control) or NAP (for Microsoft – Network Access Protection) in conjunction with 802.1x will be standard for authenticating network components and allowing them access to the network. At least in the future. Currently their aren’t a lot of companies how are using NAC in the network. Techworld released an … 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