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docs/configuration/interfaces/tunnel.rst
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@ -1,4 +1,4 @@
:lastproofread: 2022-08-26 :lastproofread: 2023-01-26
.. _tunnel-interface: .. _tunnel-interface:
@ -114,12 +114,12 @@ over either IPv4 (gre) or IPv6 (ip6gre).
Configuration Configuration
^^^^^^^^^^^^^ ^^^^^^^^^^^^^
A basic configuration requires a tunnel source (source-address), a tunnel destination A basic configuration requires a tunnel source (source-address), a tunnel
(remote), an encapsulation type (gre), and an address (ipv4/ipv6). Below is a destination (remote), an encapsulation type (gre), and an address (ipv4/ipv6).
basic IPv4 only configuration example taken from a VyOS router and a Cisco IOS Below is a basic IPv4 only configuration example taken from a VyOS router and
router. The main difference between these two configurations is that VyOS a Cisco IOS router. The main difference between these two configurations is
requires you explicitly configure the encapsulation type. The Cisco router that VyOS requires you explicitly configure the encapsulation type. The Cisco
defaults to GRE IP otherwise it would have to be configured as well. router defaults to GRE IP otherwise it would have to be configured as well.
**VyOS Router:** **VyOS Router:**
@ -203,22 +203,21 @@ An example:
set interfaces tunnel tun0 address 172.16.17.18/24 set interfaces tunnel tun0 address 172.16.17.18/24
set interfaces tunnel tun0 parameters ip key 20 set interfaces tunnel tun0 parameters ip key 20
GRE-Bridge GRETAP
^^^^^^^^^^ ^^^^^^^
While normal GRE is for layer 3, GRE-Bridge is for layer 2. GRE-Bridge can While normal GRE is for layer 3, GRETAP is for layer 2. GRETAP can encapsulate
encapsulate Ethernet frames, thus it can be bridged with other interfaces to Ethernet frames, thus it can be bridged with other interfaces to create
create datalink layer segments that span multiple remote sites. datalink layer segments that span multiple remote sites.
Layer 2 GRE example:
.. code-block:: none .. code-block:: none
set interfaces bridge br0 member interface eth0 set interfaces bridge br0 member interface eth0
set interfaces bridge br0 member interface tun0 set interfaces bridge br0 member interface tun0
set interfaces tunnel tun0 encapsulation gretap set interfaces tunnel tun0 encapsulation gretap
set interfaces tunnel tun0 source-address 192.0.2.100 set interfaces tunnel tun0 source-address 198.51.100.2
set interfaces tunnel tun0 remote 192.0.2.1 set interfaces tunnel tun0 remote 203.0.113.10
Troubleshooting Troubleshooting
^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^