What is EtherChannel guard Misconfig?

What is EtherChannel guard Misconfig?

–> EtherChannel Misconfiguration Guard is a method of finding EtherChannel is working properly or not. –> Basically it will check another side of the EtherChannel is having correct parameters or not like speed, duplex.

How do I enable EtherChannel Misconfig guard?

If the switch detects a misconfiguration on the other device, EtherChannel guard places the switch interfaces in the error-disabled state, and displays an error message. You can enable this feature by using the spanning-tree etherchannel guard misconfig global configuration command.

How does STP work on EtherChannel?

Spanning tree protocol (STP) can be used with an EtherChannel. STP treats all the links as a single one and BPDUs are only sent down one of the links. Without the use of an EtherChannel, STP would effectively shutdown any redundant links between switches until one connection goes down.

Can an EtherChannel be configured with STP?

Each EtherChannel has a logical port channel interface. A configuration that is applied to the port channel interface affects all physical interfaces that are assigned to that interface. (Such commands can be STP commands or commands to configure a Layer 2 EtherChannel as a trunk or an access port.)

What is Spanning Tree extend ID?

The Extended System ID is a value of 1 to 4095 corresponding to the respective VLAN participating in STP. The Bridge Priority increments in blocks of 4096 to allow the System ID Extension to squeeze in between each increment.

Can STP block EtherChannel?

Yes! In fact, the Etherchannel/Portchannel interface will be blocked since that is the only interface that is participating in the Spanning-Tree protocol.

What is STP bridge ID?

The bridge ID is an 8-byte field that is composed of two sub fields: The value for the priority ranges from 0 to 61440 in steps of 4096. The default value for the priority is 32768. The VLAN ID ranges from 1 to 4096.

What is bridge priority in STP?

The bridge priority determines which bridge is elected as the root bridge. If two bridges have the same path cost to the root bridge, the bridge priority determines which bridge becomes the designated bridge for a LAN segment.

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 root guard?

Root guard is an STP feature that is enabled on a port-by-port basis; it prevents a configured port from becoming a root port. Root guard prevents a downstream switch (often misconfigured or rogue) from becoming a root bridge in a topology.

What is BPDU guard?

The BPDU guard, an enhancement to STP, removes a node that reflects BPDUs back in the network. It enforces the STP domain borders and keeps the active topology predictable by not allowing any network devices behind a BPDU guard-enabled port to participate in STP.

What is the difference between lag and MLAG?

MLAG is the ability of switches to appear as a single switch at layer 2, so that bundles of links in the form of LAGs can be diversely connected to each switch and appear as one. LAGs are typically created North & South i.e. between host and switch, whereas MLAG is created and expanded in an East & West direction.

What is MEC in VSS?

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.