Dell PowerSwitch S4128F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 454

Example Supported Releases Field Description ● Unknown-Shown when FEFD is enabled and changes to bi-directional after successful handshake with the peer. Also shown if the peer goes down in normal mode. ● Locally disabled-Interface contains the fefd reset command in its configuration. ● Admin Shutdown-Interface is disabled using the shutdown command. ● Line protocol is down-The state on the remote device when an interface of the local device is disabled with the shutdown command. OS10# show fefd FEFD is globally 'ON', interval is 22 seconds,mode is NORMAL. INTERFACE MODE INTERVAL STATE eth1/1/1 Normal 22 Unknown eth1/1/2 Normal 22 Unknown eth1/1/3 Normal 22 Unknown eth1/1/4 Normal 22 Unknown eth1/1/5 Normal 22 Unknown eth1/1/6 Normal 22 Unknown eth1/1/7 Normal 22 Unknown eth1/1/8 Normal 22 Unknown eth1/1/9 Aggressive 22 Err-disabled eth1/1/10 Normal 22 Unknown 10.4.3.0 or later Link Aggregation Control Protocol Group Ethernet interfaces to form a single link layer interface called a LAG or port channel. Aggregating multiple links between physical interfaces creates a single logical LAG, which balances traffic across the member links within an aggregated Ethernet bundle and increases the uplink bandwidth. If one member link fails, the LAG continues to carry traffic over the remaining links. For information about LAG load balancing and hashing, see Load balancing. You can use LACP to create dynamic LAGs exchanging information between two systems (also called Partner Systems) and automatically establishing the LAG between the systems. LACP permits the exchange of messages on a link to: ● Agree on the identity of the LAG to which the link belongs. ● Move the link to that LAG. ● Enable the transmission and reception functions. LACP functions by constantly exchanging custom MAC PDUs across LAN Ethernet links. The protocol only exchanges packets between ports you configure as LACP-capable. Modes A LAG includes three configuration modes-on, active, and passive. On Active Passive Sets the Channeling mode to Static. The interface acts as a member of the static LAG. Sets the interface in the Active Negotiating state. LACP runs on any link that is configured in this mode. A port in Active mode automatically initiates negotiations with other ports by using LACP packets. A port in Active mode can set up a port channel with another port in Active mode or Passive mode. Sets the interface in an Inactive Negotiating state, but LACP runs on the link. A port in Passive mode also responds to negotiation requests (from ports in Active mode). Ports in Passive mode respond to LACP packets. A port in Passive mode cannot set up a LAG with another port in Passive mode. ● There is no dual-membership in static and dynamic LAGs: 454 Layer 2