Configuring Tunnel Interfaces with the SRC CLI

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SRC-PE 2.0.x Getting Started Guide > Configuring Remote Access to a C-series Controller with the SRC CLI > Configuring Tunnel Interfaces with the SRC CLI
Configuring Tunnel Interfaces with the SRC CLI

A tunnel allows direct connection between a remote location and an application running on the C-series Controller; a tunnel lets you use the redirect server in deployments where a JUNOSe router does not have a direct connection to the C-series Controller.

The C-series Controller supports the following types of tunnel interfaces:

GRE—Generic routing encapsulation. Encapsulates traffic that can use various network protocols within IP. For C-series Controllers, the tunnel interface encapsulates IP packets.

IP-over-IP—Encapsulates IP packets within IP packets.

SIT—Encapsulates IPv6 traffic in an IPv4 tunnel. This type of tunnel allows compatibility of IPv6 traffic within an IPv4 network.

The other endpoint for the tunnel on a device must be configured for the tunnel to be operational.

The local address of a tunnel connection is an IP address that is configured for a unit (logical interface). Before you configure a tunnel interface, configure the interface on the C-series Controller.

See Configuring Gigabit Ethernet Interfaces for IPv4 with the SRC CLI.

Use the following configuration statements to configure tunnel interfaces at the [edit] hierarchy level:
interfaces name tunnel {
    mode (ipip | gre | sit);
    destination destination; 
    source source; 
    key key; 
    interface interface; 
    ttl ttl;
}
interfaces name unit unit-number family inet {
    address address; 
}
To configure a tunnel interface on a C-series Controller:
From configuration mode, access the configuration statement that configures tunnel interfaces.
[edit]
user@host# edit interfaces name tunnel
For example:
[edit]
user@host# edit interfaces ip-tunnel tunnel
Configure the type of tunnel.
[edit interfaces ip-tunnel tunnel]
user@host# set mode ipip
or
[edit interfaces ip-tunnel tunnel]
user@host# set mode gre
or
[edit interfaces ip-tunnel tunnel]
user@host# set mode sit
Specify the IP address of the remote end of the tunnel.
[edit interfaces ip-tunnel tunnel]
user@host# set destination destination
For example:
[edit interfaces ip-tunnel tunnel]
user@host# set destination 192.0.2.20
(Optional) Specify an IP address that will not change for the local tunnel endpoint. It must be an address on another interface of this host.
[edit interfaces ip-tunnel tunnel]
user@host# set source source
For example:
[edit interfaces ip-tunnel tunnel]
user@host# set source 192.20.10.5
(Optional) For a GRE tunnel, specify a key.
[edit interfaces ip-tunnel tunnel]
user@host# set key key
For example:
[edit interfaces ip-tunnel tunnel]
user@host# set key 250
(Optional) Specify an existing physical interface on the C-series Controller.
[edit interfaces ip-tunnel tunnel]
user@host# set interface interface
For example:
[edit interfaces ip-tunnel tunnel]
user@host# set interface eth0
(Optional) Specify the lifetime of tunneled packets.
[edit interfaces ip-tunnel tunnel]
user@host# set ttl ttl
For example:
[edit interfaces ip-tunnel tunnel]
user@host# set ttl 110
Verify the configuration by running the show command. For example:
[edit interfaces]
user@host# show 
unit 0 {
  family { 
    inet6 { 
      address 192.2.0.10/24;
    }
  }
}
ip-tunnel {
  tunnel { 
      mode ipip;
      destination 192.0.2.20;
      source 192.20.10.5;
      interface eth0;
      ttl 110;
    }
}

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