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99 lines
2.3 KiB
ReStructuredText
99 lines
2.3 KiB
ReStructuredText
############################
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DHCP Relay trough GRE-Bridge
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############################
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| Testdate: 2023-05-11
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| Version: 1.4-rolling-202305100734
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This simple structure shows how to configure a DHCP Relay over a GRE Bridge
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interface.
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********
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Topology
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********
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The topology has 3 VyOS routers and one client. Between the DHCP Server and
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the DHCP Relay is a GRE tunnel. The `transport` VyOS represent a large
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Network.
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.. image:: _include/topology.png
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:alt: Ansible Example topology image
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*************
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Configuration
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*************
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First, we configure the transport network and the Tunnel interface.
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Transport:
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.. literalinclude:: _include/transport.conf
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:language: none
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DHCP-Server
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.. literalinclude:: _include/dhcp-server.conf
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:language: none
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:lines: 1-8
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DHCP-Relay
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.. literalinclude:: _include/dhcp-relay.conf
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:language: none
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:lines: 1-8
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After this, we need the DHCP-Server and Relay configuration.
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To get a testable result, we just have one IP in the DHCP range.
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Expand it as you need it.
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DHCP-Server
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.. literalinclude:: _include/dhcp-server.conf
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:language: none
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:lines: 9-13
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DHCP-Relay
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.. literalinclude:: _include/dhcp-relay.conf
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:language: none
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:lines: 9-10
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***************
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Test the result
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***************
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Ping the Client from the DHCP Server.
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.. code-block:: none
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vyos@dhcp-server:~$ ping 192.168.0.30 count 4
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PING 192.168.0.30 (192.168.0.30) 56(84) bytes of data.
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64 bytes from 192.168.0.30: icmp_seq=1 ttl=63 time=1.02 ms
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64 bytes from 192.168.0.30: icmp_seq=2 ttl=63 time=1.06 ms
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64 bytes from 192.168.0.30: icmp_seq=3 ttl=63 time=1.21 ms
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64 bytes from 192.168.0.30: icmp_seq=4 ttl=63 time=1.16 ms
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--- 192.168.0.30 ping statistics ---
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4 packets transmitted, 4 received, 0% packet loss, time 3004ms
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rtt min/avg/max/mdev = 1.016/1.112/1.214/0.077 ms
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And show all DHCP Leases
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.. code-block:: none
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vyos@dhcp-server:~$ show dhcp server leases
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IP Address MAC address State Lease start Lease expiration Remaining Pool Hostname
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------------ ----------------- ------- ------------------- ------------------- ----------- ---------- ----------
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192.168.0.30 00:50:79:66:68:05 active 2023/05/11 13:08:50 2023/05/12 13:08:50 23:59:16 DHCPTun100 VPCS
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