What is cross stack EtherChannel?
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.
When configuring LACP EtherChannel which mode will you use on the interfaces?
LACP uses two types of port modes; active and passive. LACP active mode unconditionally forms a LACP dynamic ether-channel whereas passive will only accept LACP negotiation attempts from a device set to active. LACP is commonly used for Server NIC teaming with Broadcom or Intel NIC’s that support 802.3ad (LACP).
Is EtherChannel the same as LACP?
EtherChannel supports both LACP and Cisco’s PAgP, whereas 802.3ad uses LACP. LACP allows for up to 8 active and 8 standby links, whereas PAgP only allows for 8 active links.
What is LACP EtherChannel?
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. You can configure maximum 16 ports to form a channel depending on IOS version and platform.
Which two EtherChannel modes can create an LACP EtherChannel?
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 |
Which one is an advantage of using LACP?
LACP allows Fast Ethernet and Gigabit Ethernet interfaces to be mixed within a single EtherChannel. It eliminates the need for configuring trunk interfaces when deploying VLANs on multiple switches. It allows directly connected switches to negotiate an EtherChannel link.
Should I use PAgP or LACP?
Both LACP and PAGP protocols are used for link aggregation. 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.
Can you stack meraki switches?
Up to eight Meraki MS switches can be configured in a physical stack to allow for high-speed communication between devices. Flexible stacking is available on MS420 and MS425 switches which do not have dedicated stacking ports; any port on these switches can be configured as a stack port.