What two keywords are used with PAgP?

Use in PAgP mode with the auto or desirable keyword when traffic is expected from the other device. Unconditionally enables PAgP. Enables the on mode.

What is the difference between PAgP and LACP?

Both LACP and PAGP packets are exchanged between switches over Etherchannel capable ports. The most significant difference is the vendors supported for them. LACP is open standard and supported by most of vendors, while PAGP is Cisco proprietary only used between Cisco devices.

How many ports can PAgP bundle?

eight ports
For a PAgP EtherChannel, you can configure up to eight ports of the same type and speed for the same group. For a LACP EtherChannel, you can configure up to 16 Ethernet ports of the same type. Up to eight ports can be active, and up to eight ports can be in standby mode.

Which mode is in PAgP?

Port Aggregation Protocol (PAgP) has two Channel modes and they are “Desirable” and “Auto”. Link Aggregation Control Protocol (LACP) has two Channel modes and they are “Active” and “Passive”.

What are the two protocols used in EtherChannel?

EtherChannel protocols – To form an EtherChannel, there are 2 protocols, port aggregation protocol (PAgP) and link aggregation control protocol (LACP). Port Aggregation Protocol is a Cisco proprietary protocol used to form an EtherChannel. There are different modes in which you can configure your interface.

What is LACP protocol?

Link Aggregation Control Protocol or LACP is one element of an IEEE specification (802.3ad) that provides guidance on the practice of link aggregation for data connections. Importantly, LACP typically applies to strategies that bundle individual links of Ethernet connections, and not wireless transfers.

How does LACP protocol work?

LACP is compatible with other peers that run the 802.3ad LACP protocol. It automatically binds the member links without manually configuring the LAG, thereby avoiding errors. Tentative sessions are created for all interfaces in a particular VLAN.

What is EtherChannel protocol?

EtherChannel is a port link aggregation technology or port-channel architecture used primarily on Cisco switches. It allows grouping of several physical Ethernet links to create one logical Ethernet link for the purpose of providing fault-tolerance and high-speed links between switches, routers and servers.

What is a Port Aggregation Protocol ( PAgP )?

Port Aggregation Protocol (PAgP) is a Cisco proprietary link aggregation protocol that enables the automatic creation of EtherChannels. By default, PAgP packets are sent between EtherChannel-capable ports in order to negotiate the forming of an EtherChannel.

What does PAgP stand for in Cisco EtherChannel?

Port Aggregation Protocol (PAgP) also called EtherChannel is a Cisco proprietary protocol that is used for bundling two or more physical ports into single logical port. EtherChannel can provide high availability and increase bandwidth at the same time.

Is there a similar protocol as PAgP or LACP?

A similar protocol known as LACP — released by the IEEE and known as 802.3ad or 802.1ax recently — is an industry standard and is not tied to a specific vendor: PAgP can be configured on a Cisco switch to operate in three different modes: on – no protocols are used: it assumes the other side has enabled link aggregation.

Which is better PAgP or EtherChannel load balancing?

PAgP is Cisco’s proprietary EtherChannel protocol – Port Aggregation Protocol. But given a standardized approach we often lean towards a standardized approach. In my mind these are equal, except for the fact that one is standard; one is proprietary.