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Advanced Configuration and Management Guide
Configuring SRP on Virtual Interfaces
A virtual interface will by default remain active until all underlying links go down. If you want the virtual link to go to
SRP standby state when a subset of the ports goes down, you need to configure track ports.
PC1
192.147.201.50
4
5
7
6
1
2
3
8
Switch
Router
IP Subnet
VLAN
Virtual
Interface 1
192.147.201.1
Router1
(ACTIVE)
4
8
6
7
1
2
3
5
Switch
Router
IP Subnet
VLAN
Virtual
Interface 1
Router2
(STANDBY)
A
A
192.147.200.1
192.147.201.2
192.147.200.2
S
S
Switch
Switch
192.147.200.51
Switch
192.147.200.52
Switch
192.147.200.50
PC2
PC3
PC4
Figure 13.6 Configuring SRP on virtual interfaces
Configuring Multiple Track Ports for Virtual Interfaces
In Figure 13.6, Router 1 is the active router and Router 2 the standby router for all active SRP interfaces.
Suppose you want Router 1 to go into the SRP standby state and establish Router 2 as the active router in case
ports 1, 2, 3, or 8 on Router 1 go down. To do so, you would configure track ports for ports 1, 2, 3, and 8 on
Router 1.
In preparation for track port configuration on Router 1, you would do the following:
1. Configure an IP sub-net VLAN with port membership of 1, 2, and 3 on Router 1.
2. Enable SRP on virtual interface 1.
3. Assign an IP address to virtual interface 1.
4. Assign ports 1, 2, 3, and 8 as track ports for virtual interface 1.
5. Assign an IP address to interface 8.
6. Assign ports 1, 2, and 3 as track ports for interface 8.
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