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tunnel: proofread

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