Cisco Catalyst 2360 Software Configuration Manual page 431

Chapter 26 Configuring EtherChannels and Link-State Tracking
Figure 26-5
Distribution
switch 1
Link-state
Switch A
Link-
state
group 2
Link-
state
group 1
The configuration in
For links to switches and other network devices
•
–
–
• Link-state group 1 on switch A
–
–
OL-19808-01
Typical Link-State Tracking Configuration
Link-state
group 1
group 1
Port Port
Port
5 6
7
Port
8
Port Port Port Port
1 2 3 4
Server 1 Server 2
Primary link
Secondary link
Figure 26-5
Server 1 and server 2 use switch A for primary links and switch B for secondary links.
Server 3 and server 4 use switch B for primary links and switch A for secondary links.
Switch A provides primary links to server 1 and server 2 through link-state group 1. Port 1 is
connected to server 1, and port 2 is connected to server 2. Port 1 and port 2 are the downstream
interfaces in link-state group 1.
Port 5 and port 6 are connected to distribution switch 1 through link-state group 1. Port 5 and
port 6 are the upstream interfaces in link-state group 1.
Network
Layer 3 link
Server 3
ensures that the network traffic flow is balanced as follows:
Catalyst 2360 Switch Software Configuration Guide
Understanding Link-State Tracking
Distribution
switch 2
Link-state
group 2
Link-state
group 2
Port Port
Port
6 5
7
Port
Switch B
8
Port Port Port Port
1 2 3 4
Server 4
Link-
state
group 1
Link-
state
group 2
26-19