What is cross-stack Lacp?

Published by Charlie Davidson on

What is cross-stack Lacp?

The EtherChannel on multiple switches in the Cisco Catalyst 3750 stack is called cross-stack EtherChannel. If a link within an EtherChannel fails, traffic previously carried over that failed link changes to the remaining links. within the EtherChannel.

What is cross-stack?

In cross-stack references, you manage your stacks separately. You export an output from one stack and import it in another, or in other words, your second stack references the output of the first stack. So, the exported output should be ready before the creation of the importing stack.

Should I use PAGP or Lacp?

Besides, LACP can support cross-stack, while PAGP does not since it does not support participating interfaces on different physical switches. Thus if you need to form the Etherchannel on stack switch, it is better to choose LACP instead of PAGP.

What does Lacp mean?

Link Aggregation Control Protocol
Link Aggregation Control Protocol (LACP) open_in_new.

What is Pulumi stack?

A stack is an isolated, independently configurable instance of a Pulumi program. A project can have as many stacks as you need. By default, Pulumi creates a stack for you when you start a new project using the pulumi new command.

What are parameters which are predefined by CloudFormation called?

Pseudo parameters are parameters that are predefined by AWS CloudFormation. You don’t declare them in your template. Use them the same way as you would a parameter, as the argument for the Ref function.

What layer is LACP?

Layer 2
Starting in Junos OS Release 15.1X49-D80, Link Aggregation Control Protocol (LACP) is supported in Layer 2 transparent mode in addition to existing support in Layer 3 mode for SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200 devices and vSRX instances.

Why do we use LACP?

Link Aggregation Control Protocol is an IEEE standard defined in IEEE 802.3ad. LACP lets devices send Link Aggregation Control Protocol Data Units (LACPDUs) to each other to establish a link aggregation connection. Both devices must support LACP for you to set up a dynamic LAG between those devices.

How do I get rid of Pulumi stack?

To delete the stack itself, run pulumi stack rm . Note that this removes the stack entirely from the Pulumi Service, along with all of its update history.

What does cross stack uplinkfast ( CSUF ) do?

Cross-Stack UplinkFast (CSUF) provides a fast spanning-tree transition (fast convergence in less than 1 second under normal network conditions) across a switch stack.

What is the purpose of the Cisco uplinkfast feature?

UplinkFast is a Cisco specific feature that improves the convergence time of the Spanning-Tree Protocol (STP) in the event of the failure of an uplink.

How long does it take to recover from uplinkfast?

With the default STP parameters, the recovery takes up to 30 seconds, and with aggressive timer tuning, this lapse of time can be reduced to 14 seconds. The UplinkFast feature is a Cisco proprietary technique that reduces the recovery time further down to the order of one second.

What happens to the uplink group on a switch?

On a given switch, the uplink group consists in the root port and all the ports that provide an alternate connection to the root bridge. If the root port fails, which means if the primary uplink fails, a port with next lowest cost from the uplink group is selected to immediately replace it.

Categories: Contributing