HP ProCurve 2650 User Manual

9-11
Optimizing Traffic Flow with Port Controls, Port Trunking, and Port-Based Priority
Port Trunking
Port Connections and Configuration: All port trunk links must be point-
to-point connections between the Switches 2650 and 6108 and another switch,
router, server, or workstation configured for port trunking. No intervening,
non-trunking devices are allowed. It is important to note that ports on both
ends of a port trunk group must have the same mode (speed and duplex) and
flow control settings.
Note Link Connections. The switch does not support port trunking through an
intermediate, non-trunking device such as a hub, or using more than one media
type in a port trunk group. Similarly, all links in the same trunk group must
have the same speed, duplex, and flow control.
Port Security Restriction. Port security does not operate on a trunk group.
If you configure port security on one or more ports that are later added to a
trunk group, the switch will reset the port security parameters for those ports
to the factory-default configuration.
Caution To avoid broadcast storms or loops in your network while configuring a
trunk, first disable or disconnect all ports you want to add to or remove from
the trunk. After you finish configuring the trunk, enable or re-connect the
ports.
Switches 2650 and 6108 Port Trunk Features and
Operation
The Switches 2650 and 6108 offers these options for port trunking:
■ LACP (IEEE 802.3ad—page 9-25)
■ Trunk (non-protocol—page 9-31)
■ FEC (Fast EtherChannel®—page 9-31)
The switch supports six trunk groups of up to four ports each. (Using the Link
Aggregation Control Protocol—LACP—option, you can include standby
trunked ports in addition to the maximum of four actively trunking ports.)
LACP Note LACP operation requires full-duplex (FDx) links. For most installations, HP
recommends that you leave the port Mode settings at Auto (the default). LACP
also operates with Auto-10, Auto-100, and Auto-1000 (if negotiation selects FDx);
10FDx, 100FDx, and 1000FDx settings.
!Software.book Page 11 Thursday, October 10, 2002 6:10 PM

HP ProCurve 2650 Specifications

General

Brand	HP
Model	ProCurve 2650
Category	Switch
Language	English