3Com Switch 7750 Configuration Guide Guide

270 CHAPTER 31: STATIC ROUTE CONFIGURATION

Configuration procedure

Before the following configuration, make sure that the Ethernet link layer works

normally and the IP addresses of the VLAN interfaces have been configured

correctly.

# Configure static routes on Switch A.

<SwitchA>system-view

[SwitchA] ip route-static 1.1.3.0 255.255.255.0 1.1.2.2

[SwitchA] ip route-static 1.1.4.0 255.255.255.0 1.1.2.2

[SwitchA] ip route-static 1.1.5.0 255.255.255.0 1.1.2.2

# Configure static routes on Switch B.

<SwitchB>system-view

[SwitchB] ip route-static 1.1.2.0 255.255.255.0 1.1.3.1

[SwitchB] ip route-static 1.1.5.0 255.255.255.0 1.1.3.1

[SwitchB] ip route-static 1.1.1.0 255.255.255.0 1.1.3.1

# Configure static routes on Switch C.

<SwitchC>system-view

[SwitchC] ip route-static 1.1.1.0 255.255.255.0 1.1.2.1

[SwitchC] ip route-static 1.1.4.0 255.255.255.0 1.1.3.2

# Configure the default gateway of Host A to 1.1.5.1.

[SwitchA] ip route-static 0.0.0.0 0.0.0.0 1.1.5.1

# Configure the default gateway of Host B to 1.1.4.1.

[SwitchB] ip route-static 0.0.0.0 0.0.0.0 1.1.4.1

# Configure the default gateway of Host C to 1.1.1.1.

[SwitchC] ip route-static 1.1.1.0 255.255.255.0 1.1.1.1

Now, all the hosts/switches in the figure can interconnect with each other.

Troubleshooting a

Static Route

Symptom: The switch is not configured with a dynamic routing protocol. Both the

physical status and the link layer protocol status of an interface are UP, but IP

packets cannot be normally forwarded on the interface.

Solution: Perform the following procedure.

Use the display ip routing-table protocol static command to view whether the

corresponding static route is correctly configured.

Use the display ip routing-table command to view whether the static route is

valid.