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2 Etherchannel questions

ChrisNewnham_
Level 1
Level 1

1) Regarding LACP, what is the best of tuning the shortest possible link-bundling time? Is it to have both ends as "active"? I also configured "lacp rate fast" but I believe this is more for failover.

2) In "On" mode (i.e. not LACP or PAGP) commonly supported outside of Cisco devices? Most non-Cisco devices I've come across use LACP but just checking that's not just my sheltered existence  

Thanks!

3 Replies 3

M02@rt37
VIP
VIP

Hello @ChrisNewnham_,

To tune the shortest possible link-bundling time with LACP, it is recommended to configure both ends of the link as "active" mode. In LACP, there are two modes: active and passive. The active mode means that the device actively tries to negotiate and form an LACP link with the remote device, while the passive mode waits for the remote device to initiate the negotiation. By setting both ends as active, you ensure that both devices actively participate in the negotiation process, which can help in establishing the link aggregation faster.

The "lacp rate fast" command you mentioned is specific to Cisco devices. It enables a fast periodic transmission of LACP control messages, which can help in detecting and recovering from link failures quickly. However, it does not directly impact the link-bundling time.

LACP (IEEE 802.3ad) is a widely supported standard protocol for link aggregation, and it is not limited to Cisco devices. LACP is supported by various networking vendors, including but not limited to Juniper Networks, Arista Networks, Hewlett Packard Enterprise (HPE), Extreme Networks, and many others. It is a common feature found in enterprise-grade network switches and routers across different vendors.

 

Best regards
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Thanks, that’s helpful!

 

Do you have any reference for saying that the active/active is quicker?

Do non Cisco devices support “on” mode?

Do non Cisco devices support “on” mode?

Most non Cisco devices support LACP and mode "on" but each vendor call it something different then mode "on". An example is VMware.

HTH