Chapter 3: Port Trunking; Overview; Figure 3-1 Port Trunk Group - Nortel Web OS Switch Software Application Manual

C
HAPTER
Port Trunking
Trunk groups can provide super-bandwidth, multi-link connections between Alteon Web
switches or other trunk-capable devices. A trunk group is a group of ports that act together,
combining their bandwidth to create a single, larger virtual link. This chapter provides configu-
ration background and examples for trunking multiple ports together:
n

Overview

n
"Port Trunking Example" on page 67
Overview
When using port trunk groups between two Alteon Web switches as shown in
can create a virtual link between the switches operating up to six gigabits per second, depend-
ing on how many physical ports are combined. The switch supports up to four trunk groups per
switch, each with two to six links.
Data
1
Link
Active
Data
Link
Active
TX RX

Figure 3-1 Port Trunk Group

Trunk groups are also useful for connecting an Alteon Web switch to third-party devices that
support link aggregation, such as Cisco routers and switches with EtherChannel technology
(not ISL trunking technology) and Sun's Quad Fast Ethernet Adapter. Nortel Networks trunk
group technology is compatible with these devices when they are configured manually.
212777-A, February 2002
3
Web Switch
10/100/10000 Mbps Ethernet Server Switch
2 3 4 5 6 7 8
TX RX TX RX TX RX TX RX TX RX TX RX TX RX
Gigabit
Powered
Data
1 2
Link
Data 9
Active
Link
Data
Link
Active
Power Console TX RX TX RX TX
Aggregate Port Trunk
Figure
Web Switch
10/100/10000 Mbps Ethernet Server Switch
3 4 5 6 7 8
Data
Link
RX TX RX TX RX TX RX TX RX TX RX
3-1, you
Gigabit
Powered
9
Power Console
041
65