Table of Contents
- 1 What is mode of PAgP and LACP?
- 2 What is the difference between port channel and LACP?
- 3 Are LACP and PAgP interoperable?
- 4 What are the modes of PAgP?
- 5 What are the supported modes with PAgP?
- 6 What is STP protocol?
- 7 What are the limitation of PAgP?
- 8 When would you use LACP?
- 9 What is LACP mode?
- 10 What is LACP protocol?
- 11 What is LACP lag?
What is mode of PAgP and LACP?
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”….Link Aggregation Control Protocol (LACP)
| Active | Passive | |
|---|---|---|
| Active | Yes | Yes |
| Passive | Yes | No |
What is the difference between port channel and LACP?
The port channel is configured in port-channel configuration mode. Configuration changes to a port channel interface propagate to all Ethernet interfaces in the corresponding channel group. LACP is enabled on the member interfaces by setting the channel-group mode to active or passive.
What is PAgP 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. You can configure it manually or use protocols like PAgP or LACP.
Are LACP and PAgP interoperable?
EtherChannel groups running PAgP and LACP can coexist on the same switch. Individual EtherChannel groups can run either PAgP or LACP, but they cannot interoperate. For Layer 2 EtherChannels: – Assign all ports in the EtherChannel to the same VLAN, or configure them as trunks.
What are the modes of PAgP?
There are two modes of PAgP:
- Auto mode: it passively negotiates PAgP aggregation. If the remote end of the link is also configured with Auto mode, a PAgP EtherChannel will not form.
- Desirable mode:that actively negotiates PAgP. The remote end must be configured in Auto or Desirable mode for a PAgP EtherChannel to form.
What are the different LACP modes?
There are few LACP modes: “active”, “passive” and “on”. Switch(config)#interface port-channel 5 Then you need to assign the physical ports and specify LACP mode.
What are the supported modes with PAgP?
What is STP protocol?
Spanning Tree Protocol (STP) is a link management protocol that provides path redundancy while preventing undesirable loops in the network. When it comes to ethernet networks, only one active path can exist between two stations in order for them to function properly.
Why is PAgP better than LACP?
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. Thus if you need to form the Etherchannel on stack switch, it is better to choose LACP instead of PAGP.
What are the limitation of PAgP?
Limitations. A limitation of Port Aggregation Protocol is that all the physical ports in the aggregation group must reside on the same switch. Cisco’s 6500 and the 4500E platforms, remove this limitation using Virtual Switching System (VSS), which allows port channels to be split between two chassis.
When would you use LACP?
LACP, a subcomponent of IEEE 802.3ad, provides additional functionality for link aggregation groups (LAGs). Use the link aggregation feature to aggregate one or more Ethernet interfaces to form a logical point-to-point link, known as a LAG, virtual link, or bundle.
What are LACP modes?
Link Aggregation Control Protocol IEEE 802.3ad (LACP) is an open standard of Ethernet link aggregation. LACP allows Cisco switches to manage Ethernet channels between switches that conform the 802.3ad protocol.
What is LACP mode?
LACP ( LINK AGGREGATION CONTROL PROTOCOL) LACP is an open standard protocol and published under the 802.3ad specification. It uses the multicast address of 01-80-c2-00-00-02. A port in the active mode can form an EtherChannel with another port that is in the active or passive mode.
What is LACP protocol?
Link Aggregation Control Protocol (LACP) is a protocol for the collective handling of multiple physical ports that can be seen as a single channel for network traffic purposes.
How does LACP work?
LACP is a standards-based method to control the bundling of several physical network links together to form a logical channel for increased bandwidth and redundancy purposes. LACP enables a network device to negotiate an automatic bundling of links by sending LACP packets to the peer.
What is LACP lag?
LACP – Link Aggregation Control Protocol. Basically, LACP helps automate the configuration and maintenance of LAG’s. LACP is a dynamic protocol. It is sufficient if multiple ports on various devices are LACP enabled, once. LACP is a standard and hence LACP can be implemented between multi-vendor switches.