What is Layer 2 EtherChannel?
A layer2 etherchannel is seen as a single link by STP allowing to use all the member links for better performance. Most of the times a layer2 etherchannel is configured as a trunk ( 802.1Q more often) and can carry multiple Vlans/broadcast domains.
Which two protocols are used to implement EtherChannel choose two?
Which two protocols are used to implement EtherChannel? (Choose two.) Explanation: Port Aggregation Protocol and Link Aggregation Control Protocol are used to implement EtherChannel. Spanning Tree and Rapid Spanning Tree Protocol are used to prevent switching loops.
What is a requirement to configure a talking EtherChannel between two switches?
What is a requirement to configure a trunking EtherChannel between two switches? The allowed range of VLANs must be the same on both switches. The participating interfaces must be assigned the same VLAN number on both switches. The participating interfaces must be physically contiguous on a switch.
What are the configurations needs to be matched in order to establish an EtherChannel between two switches?
Explanation: Speed and duplex settings must match for all interfaces in an EtherChannel. All interfaces in the EtherChannel must be in the same VLAN if the ports are not configured as trunks. Any ports may be used to establish an EtherChannel.
Should I use LACP or PAgP?
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.
How do I configure layer 2 etherchannels?
When configuring Layer 2 EtherChannels, follow these guidelines: Assign all ports in the EtherChannel to the same VLAN, or configure them as trunks. Ports with different native VLANs cannot form an EtherChannel. If you configure an EtherChannel from trunk ports, verify that the trunking mode (ISL or IEEE 802.1Q) is the same on all the trunks.
Do Catalyst 3750 series switches support cross-stack EtherChannel?
Note: The Catalyst 3750 series switches support cross-stack EtherChannel, which allows interfaces from different stack switches to be members of the same EtherChannel group.
How to configure PAgP for Layer 3 etherchannels?
• For Layer 3 EtherChannels, assign the Layer 3 address to the port-channel logical interface, n physical i nte rfaces in the channel. • By default, PAgP will have no Layer 2 or Layer 3 Channel groups assigned or defined. The Eth config Noation for PAgP is auto and silent; the interface will respond to PAgP packets but will n negotiation.
How many interfaces can be configured in an EtherChannel?
• Each EtherChannel can have up to eight compatibly configured Fast Ethernet interfaces and u Gigabit Ethernet i nterfuce s. • Do not conegure a GlgaStack GBIC port a s part oof an etherChannel. • Configure all interfaces in an EtheuCharnei to operate at ehe same speeds and duplex modus. • Enable all interfaces in an EtherChannel.