There are two kinds of trunks:
In a single-mode trunk, only one of the interfaces is active. The other interfaces are on standby, ready to take over if the active interface fails.
In the following figure, e0 and e1 are part of the SingleTrunk1 single-mode trunk. The active interface, e0, fails. Failure means that the link status of the interface is down, which signals that the interface has lost connection with the switch. The e1 interface takes over and maintains the connection. The interface e1 also takes over the MAC address of the e2 interface.
With single-mode trunks, the filer performs takeover based on the absence of a link.
In a multiple-mode trunk, all the interfaces are active. This provides greater speed than a single interface.
A multiple-mode trunk requires a switch that supports manually configurable trunking. The switch determines how the load is balanced among the interfaces.
In the following figure, e0, e1, e2, and e3 are part of the MultiTrunk1multiple-mode trunk. All four interfaces in the MultiTrunk1multiple-mode trunk are active.
Copyright © 1999, Network Appliance, Inc. All rights reserved.
Part No. 210-02334
File: net7.htm
Last updated: 04/26/99 08:11:18
