Features of the Nortel Ethernet Routing Switch 4500 Series
135
Trunk groups
The Nortel Ethernet Routing Switch 4500 Series supports two types of
trunk groups:
•
Link Aggregation Group (LAG): Trunk groups that are formed by Link
Aggregation are referred to as Link Aggregation Groups (LAG).
•
Multilink Trunk (MLT): Trunk groups that are formed by Nortel Ethernet
Routing Switch 4500 Series Multilink Trunking are referred to as Multilink
Trunks (MLT).
Link Aggregation
Link Aggregation (LA) provides a mechanism to create and manage trunk
groups. You can control and automatically configure a trunk group with the
Link Aggregation Control Protocol (LACP).
As defined by IEEE 802.3ad standard, the switch uses LACP the switch to
"learn" the presence and capabilities of a remote switch by exchanging
relevant information with the remote switch. Either switch can accept or
reject the aggregation request. A link that does not join a trunk group
operates as an individual link.
By default, Link Aggregation is set to off on all ports.
MultiLink Trunking
With MultiLink Trunking (MLT) you can group multiple ports, two to eight
together, when you link ports to another switch or server. This grouping
increases the aggregate throughput of the interconnection between two
devices by 8 Gb in full-duplex mode.
You can configure the Nortel Ethernet Routing Switch 4500 Series with up
to 6 multilink trunks.
You can configure the trunk members within a single unit in the stack. You
can distribute trunk members between any of the units within the stack
configuration. This is referred to as distributed trunking.
Security
The following table describes the types of security supported by the
Ethernet Routing Switch 4500 Series.
Security Type
Description
RADIUS-based security
Limit administrative access to the switch through user authentication.
MAC address-based
security
Limit access to the switch based on allowed source and destination
MAC addresses.
Nortel Ethernet Routing Switch 4500 Series
Overview — System Configuration
NN47205-500
02.01
Standard
5.0
23 February 2007
Copyright © 2007, Nortel Networks
Nortel Networks Confidential
.
