HP 5300 Informacje Techniczne Strona 239

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Port Trunking
Trunk Operation Using the “FEC” Option
Trunk Operation Using the “FEC” Option
This is the most flexible method for distributing traffic over trunked links
when connecting to devices that use the FEC (Fast EtherChannel
®
) technol-
ogy. FEC trunks offer the following benefits:
Provide trunked connectivity to a FEC-compliant server, switch, or router.
Enable quick convergence to remaining links when a failure is detected
on a trunked port link.
Depending on the capabilities of the device on the other end of the trunk,
negotiate the forwarding mechanism on the trunk to the non-protocol
option.
When auto-negotiated to the SA/DA forwarding mechanism, provide
higher performance on the trunk for broadcast, multicast, and flooded
traffic through distribution in the same manner as non-protocol trunking.
Support FEC automatic trunk configuration mode on other devices. That
is, when connecting FEC trunks to FEC-capable servers, switches, or
routers having FEC automatic trunk configuration mode enabled, the FEC
trunks allow these other devices to automatically form trunk groups.
How the Switch Lists Trunk Data
Static Trunk Group: Appears in the menu interface and the output from the
CLI show trunk and show interfaces commands.
Dynamic LACP Trunk Group: Appears in the output from the CLI show lacp
command.
Interface Option Dynamic LACP
Trunk Group
Static LACP
Trunk Group
Static Non-Protocol
or FEC Trunk Group
Menu Interface
CLI show trunk
CLI show interfaces
CLI show lacp
CLI show spanning-tree
CLI show igmp
CLI show config
No Yes Yes
No Yes Yes
No Yes Yes
Yes Yes No
No Yes Yes
No Yes Yes
No Yes Yes
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