Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 125)

Brocade ICX 6650 Layer 3 Routing Configuration Guide 107
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IPv4 point-to-point GRE tunnels
Point-to-point GRE tunnel configuration example
In the configuration example shown in Figure 16, a GRE Tunnel is configured between device A and
device 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 16 Point-to-point GRE tunnel configuration example
The following shows the configuration commands for the example shown in Figure 16.
Configuring point-to-point GRE tunnel for device A
Brocade (config)# interface ethernet 1/1/3
Brocade (config-if-e10000-1/1/3)# ip address 192.168.8.108/24
Brocade (config)# exit
Brocade (config)# interface tunnel 1
Brocade(config-tnif-1)# tunnel source 192.168.8.108
Brocade(config-tnif-1)# tunnel destination 192.168.5.2
Brocade(config-tnif-1)# tunnel mode gre ip
Brocade(config-tnif-1)# ip address 10.10.3.1/24
Brocade(config-tnif-1)# exit
Brocade (config)# ip route 192.168.5.0/24 192.168.8.1
Configuring point-to-point GRE tunnel for device B
Brocade(config)# interface ethernet 1/1/5
Brocade(config-if-e10000-1/1/5)# ip address 192.168.5.2/24
Brocade(config)# exit
Brocade(config)# interface tunnel 1
Brocade(config-tnif-1)# tunnel source 192.168.5.2
Brocade(config-tnif-1)# tunnel destination 192.168.8.108
Brocade(config-tnif-1)# tunnel mode gre ip
Port
1/1/3
10.10.1.0/24
10.10.2.0/24
10.10.3.1
10.10.3.2
Port
1/1/5
10.10.3.0
192.168.5.2
192.168.8.108
Internet
Device B
Device A