Configuration Guide User guide

1058 FastIron Configuration Guide
53-1002494-02
IPv4 point-to-point GRE tunnels
Enabling PIM-SM on a GRE tunnel
To enable PIM-SM on a GRE tunnel interface, enter commands such as the following:
Brocade(config)# interface tunnel 10
Brocade(config-tnif-10)# ip pim-sparse
Syntax: [no] ip pim-sparse
Use the no form of the command to disable PIM-SM on the tunnel interface.
Enabling PIM-DM on a GRE tunnel interface
To enable PIM-DM on a GRE tunnel interface, enter commands such as the following:
Brocade(config)# interface tunnel 10
Brocade(config-tnif-10)# ip pim
Syntax: [no] ip pim
Use the no form of the command to disable PIM-DM on the tunnel interface.
Example point-to-point GRE tunnel configuration
In the configuration example shown in Figure 125, a GRE Tunnel is configured between FastIron A
and Brocade B. Traffic between networks 10.10.1.0/24 and 10.10.2.0/24 is encapsulated in a
GRE packet sent through the tunnel on the 10.10.3.0 network, and unpacked and sent to the
destination network. A static route is configured at each Layer 3 switch to go through the tunnel
interface to the target network.
FIGURE 125 Point-to-point GRE tunnel configuration example
The following shows the configuration commands for the example shown in Figure 125.
NOTE
The configuration examples for FastIron A and FastIron B applies only to FastIron SX devices.
Port
3/1
10.10.1.0/24
10.10.2.0/24
10.10.3.1
10.10.3.2
Port
5/1
10.10.3.0
131.108.5.2
36.0.8.108
Internet
FastIron B
FastIron A