Version 6.8 91 Mediant MSBR
Configuration Guide 15. GRE Tunnels
15 GRE Tunnels
MSBR supports GRE tunnels. Tunnels are a type of interface where when there is a proper
and working IP connectivity between its two ends, appears as directly connected to the
“other side”, even if there are multiple different IP networks between them. GRE tunnels
are tunnels that use a special encapsulation on the IP packets.
15.1.1 Configuring GRE Tunnels
The following describes the commands for configuring GRE Tunnels.
Command Description
Enters the data configuration menu.
(config-data)# interface gre
<number>
MSBR supports up to 255 GRE interfaces. The
GRE interfaces can be a number from 1 to 255.
(conf-if-GRE 1)# ip address <IP>
<MASK>
Configures the IP address of the GRE interface.
The mask is not mandatory and if not stated the
default value of 255.255.255.255 is applied.
destination <IP>
Configures the destination IP for the tunnel
interface. The tunnel is created for this address.
15.1.2 Example of Connecting Multiple Subnets using GRE
This example describes the configuration of the next topology, where three different
subnets are connected using GRE tunnels. Note that for a GRE tunnel to work properly,
you must have a route to the tunnel destination.
Figure 15-1: Multiple Subnets using GRE
To Next Page
Loading...
Need help?
General
