Aggregated Links; How 802.3Ad Link Aggregation Operates - 3Com SuperStack 3 3250 Implementation Manual

Aggregated Links

How 802.3ad Link
Aggregation
Operates
Aggregated links are connections that allow devices to communicate
using multiple member links in parallel. Aggregated links provide the
following benefits:
They can potentially increase the bandwidth of a connection. The
capacity of the multiple links is combined into one logical link.
They can provide redundancy — if one link is broken, the other link
will still pass traffic.
You Switch supports aggregated links on the 10/100/1000 and SFP ports
25-26 on the Switch 3226, 49-50 on the Switch 3250). An aggregation
can be created by using both 10/100/1000 ports, both SFP ports or one
SFP port and one 10/100/1000 port. Your Switch does not support
aggregated links on the 10/100 ports.
When an SFP module is inserted it has priority over the 10/100/1000 port
of the same number (25-26 on the Switch 3226, 49-50 on the Switch
3250). The corresponding 10/100/1000 port is disabled when an SFP
module is present.
Figure 1 shows two Switches connected using an aggregated link
containing two member links. If both ports on both Switch units are
configured as 1000BASE-TX and they are operating in full duplex, the
potential maximum bandwidth of the connection is 2 Gbps.
Figure 1 Switch units connected using an aggregated link
.
Your Switch supports IEEE Std 802.3-2002 (incorporating 802.3ad)
aggregated links which use the Link Aggregation Control Protocol
(LACP). LACP provides automatic, point-to-point redundancy between
two devices (switch-to-switch or switch-to-server) that have full duplex
connections operating at the same speed.
Aggregated Links
Switch
Aggregated Link
Switch
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