What is multi chassis EtherChannel?
“Multichassis EtherChannel (MEC) is a Layer 2 multipathing technology. This form of EtherChannel allows a connected node to terminate the EtherChannel across the two physical Cisco Catalyst 6500 Series Switches that make up the VSS leading to creating simplified loop-free Layer 2 topology.
What is MC-LAG in Cisco?
In a network where L3VPN and Cisco multichassis Link Aggregation Control Protocol (mLACP) features are enabled, and logical port channels have subinterfaces that are not configured with Link Aggregation Group (LAG) or Multichassis-LAG (MC-LAG), the subinterfaces associated with both active and standby PoAs can be in …
Does Cisco support MLAG?
MLAG is a public protocol which could be supported by almost every vendor using their own custom rolled implementation, while VPC is a Cisco Nexus specific protocol, not all the vendors could have this technology in hand. Thus, MLAG setup is a bit easier than VPC.
What is MLAG in networking?
A multi-chassis link aggregation group (MLAG or MC-LAG) is a type of link aggregation group (LAG) with constituent ports that terminate on separate chassis, primarily for the purpose of providing redundancy in the event one of the chassis fails.
What is VSS and MEC?
Multichassis EtherChannel (MEC) is very similar to cross-stack EtherChannel in principle. The difference is that the feature known as MEC is found on the Catalyst 6500 VSS switches. VSS is a clustering technology that allows multiple 6500 chassis to be configured as a single logical switch.
How does Mclag work?
An MC-LAG provides redundancy and load balancing between the two MC-LAG peers, multihoming support, and a loop-free Layer 2 network without running STP. On one end of an MC-LAG, there is an MC-LAG client device, such as a server, that has one or more physical links in a link aggregation group (LAG).
Is MLAG active active?
Arista’s MultiChassis Link Aggregation (MLAG) feature removes this bottleneck and allows the utilization of all interconnects in an active/active mode.
What is vPC Cisco Nexus?
vPC (Virtual Port-Channel), also known as multichassis EtherChannel (MEC) is a feature on the Cisco Nexus switches that provides the ability to configure a Port-Channel across multiple switches (i.e. vPC peers). vPC is similar to Virtual Switch System (VSS) on the Catalyst 6500s.