mirror of
git://git.proxmox.com/git/pve-docs.git
synced 2025-06-01 01:06:10 +03:00
add documentation for vxlan layer 2 network
Thank to Alexandre Derumier <aderumier@odiso.com> for providing these docs.
This commit is contained in:
Dietmar Maurer
parent
e2a74c9e49
commit
445822a946
1
images/vxlan-l2-vlanaware.svg
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1
images/vxlan-l2-vlanaware.svg
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After Width: | Height: | Size: 23 KiB |
1
images/vxlan-l2-vlanunaware.svg
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images/vxlan-l2-vlanunaware.svg
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After Width: | Height: | Size: 22 KiB |
851
vxlan-and-evpn.adoc
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851
vxlan-and-evpn.adoc
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@ -0,0 +1,851 @@
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////
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This is currently not included, because
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- it requires ifupdown2
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- routing needs more documentation
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////
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VXLAN layer2 with vlan unware linux bridges
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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VXLAN is an overlay network to carry Ethernet traffic over an existing IP network
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while accommodating a very large number of tenants. It is defined in RFC 7348.
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Each overlay network is known as a VXLAN Segment and identified by a unique
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24-bit segment ID called a VXLAN Network Identifier (VNI).
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For BUM traffic (broadcast / unknown unicast traffic, multicast),
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we have 3 differents vxlan setup modes : multicast, unicast, bgp-evpn
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image::images/vxlan-l2-vlanunaware.svg["vxlan l2 bridge vlan unaware",align="center"]
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multicast mode
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^^^^^^^^^^^^^^
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This scenario relies in head end replication, meaning that end host in case
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of not having any entry for the destination MAC address will send out an ARP
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to other devices / VTEPs in the VXLAN network.
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This is done by sending the request to the VXLAN multicast group,
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remote VTEPs will get the packet and answer accordingly direct to the originating VTEP.
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* node1
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----
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auto eno1
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iface eno1 inet manual
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auto vmbr0
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iface vmbr0 inet static
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address 192.168.0.1
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netmask 255.255.255.0
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bridge_ports eno1
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bridge_stp off
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bridge_fd 0
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auto vxlan2
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iface vxlan2 inet manual
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vxlan-svcnodeip 225.20.1.1
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vxlan-physdev eno1
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auto vmbr2
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iface vmbr2 inet manual
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bridge_ports vxlan2
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bridge_stp off
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bridge_fd 0
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auto vxlan3
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iface vxlan3 inet manual
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vxlan-svcnodeip 225.20.1.1
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vxlan-physdev eno1
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auto vmbr3
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iface vmbr3 inet manual
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bridge_ports vxlan3
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bridge_stp off
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bridge_fd 0
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----
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* node2
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----
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auto eno1
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iface eno1 inet manual
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auto vmbr0
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iface vmbr0 inet static
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address 192.168.0.2
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netmask 255.255.255.0
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bridge_ports eno1
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bridge_stp off
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bridge_fd 0
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auto vxlan2
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iface vxlan2 inet manual
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vxlan-svcnodeip 225.20.1.1
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vxlan-physdev eno1
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auto vmbr2
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iface vmbr2 inet manual
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bridge_ports vxlan2
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bridge_stp off
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bridge_fd 0
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auto vxlan3
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iface vxlan3 inet manual
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vxlan-svcnodeip 225.20.1.1
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vxlan-physdev eno1
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auto vmbr3
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iface vmbr3 inet manual
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bridge_ports vxlan3
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bridge_stp off
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bridge_fd 0
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----
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* node3
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----
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auto eno1
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iface eno1 inet manual
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auto vmbr0
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iface vmbr0 inet static
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address 192.168.0.3
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netmask 255.255.255.0
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bridge_ports eno1
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bridge_stp off
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bridge_fd 0
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auto vxlan2
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iface vxlan2 inet manual
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vxlan-svcnodeip 225.20.1.1
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vxlan-physdev eno1
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auto vmbr2
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iface vmbr2 inet manual
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bridge_ports vxlan2
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bridge_stp off
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bridge_fd 0
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auto vxlan3
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iface vxlan3 inet manual
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vxlan-svcnodeip 225.20.1.1
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vxlan-physdev eno1
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auto vmbr3
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iface vmbr3 inet manual
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bridge_ports vxlan3
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bridge_stp off
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bridge_fd 0
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----
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unicast mode
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^^^^^^^^^^^^
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We can replace multicast by head-end replication of BUM frames to a statically configured lists of remote VTEPs.
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The VXLAN is defined without a remote multicast group.
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Instead, all the remote VTEPs are associated with the all-zero address:
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a BUM frame will be duplicated to all these destinations.
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The VXLAN device will still learn remote addresses automatically using source-address learning.
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* node1
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----
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auto eno1
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iface eno1 inet manual
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auto vmbr0
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iface vmbr0 inet static
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address 192.168.0.1
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netmask 255.255.255.0
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bridge_ports eno1
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bridge_stp off
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bridge_fd 0
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auto vxlan2
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iface vxlan2 inet manual
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vxlan_remoteip 192.168.0.2
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vxlan_remoteip 192.168.0.3
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auto vmbr2
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iface vmbr2 inet manual
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bridge_ports vxlan2
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bridge_stp off
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bridge_fd 0
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auto vxlan3
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iface vxlan2 inet manual
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vxlan_remoteip 192.168.0.2
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vxlan_remoteip 192.168.0.3
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auto vmbr3
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iface vmbr3 inet manual
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bridge_ports vxlan3
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bridge_stp off
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bridge_fd 0
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----
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* node2
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----
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auto eno1
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iface eno1 inet manual
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auto vmbr0
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iface vmbr0 inet static
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address 192.168.0.2
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netmask 255.255.255.0
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bridge_ports eno1
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bridge_stp off
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bridge_fd 0
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auto vxlan2
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iface vxlan2 inet manual
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vxlan_remoteip 192.168.0.1
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vxlan_remoteip 192.168.0.3
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auto vmbr2
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iface vmbr2 inet manual
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bridge_ports vxlan2
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bridge_stp off
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bridge_fd 0
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auto vxlan3
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iface vxlan2 inet manual
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vxlan_remoteip 192.168.0.1
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vxlan_remoteip 192.168.0.3
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auto vmbr3
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iface vmbr3 inet manual
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bridge_ports vxlan3
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bridge_stp off
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bridge_fd 0
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----
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* node3
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----
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auto eno1
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iface eno1 inet manual
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auto vmbr0
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iface vmbr0 inet static
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address 192.168.0.3
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netmask 255.255.255.0
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bridge_ports eno1
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bridge_stp off
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bridge_fd 0
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auto vxlan2
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iface vxlan2 inet manual
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vxlan_remoteip 192.168.0.2
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vxlan_remoteip 192.168.0.3
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auto vmbr2
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iface vmbr2 inet manual
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bridge_ports vxlan2
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bridge_stp off
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bridge_fd 0
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auto vxlan3
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iface vxlan2 inet manual
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vxlan_remoteip 192.168.0.2
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vxlan_remoteip 192.168.0.3
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auto vmbr3
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iface vmbr3 inet manual
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bridge_ports vxlan3
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bridge_stp off
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bridge_fd 0
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----
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bgp-evpn
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^^^^^^^^
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VTEPs use control plane learning/distribution via BGP for remote MAC addresses instead of data plane learning.
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VTEPs have the ability to suppress ARP flooding over VXLAN tunnels.
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The control plane used here is FRR, a bgp routing software.
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Each node in the proxmox cluster peer with each others nodes.
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For bigger networks, or multiple proxmox clusters,
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it's possible to use external bgp route reflector servers.
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* node1
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----
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auto eno1
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iface eno1 inet manual
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auto vmbr0
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iface vmbr0 inet static
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address 192.168.0.1
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netmask 255.255.255.0
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bridge_ports eno1
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bridge_stp off
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bridge_fd 0
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auto vxlan2
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iface vxlan2 inet manual
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vxlan-local-tunnelip 192.168.0.1
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bridge-learning off
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bridge-arp-nd-suppress on
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bridge-unicast-flood off
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bridge-multicast-flood off
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auto vmbr2
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iface vmbr2 inet manual
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bridge_ports vxlan2
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bridge_stp off
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bridge_fd 0
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auto vxlan3
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iface vxlan3 inet manual
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vxlan-local-tunnelip 192.168.0.1
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bridge-learning off
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bridge-arp-nd-suppress on
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bridge-unicast-flood off
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bridge-multicast-flood off
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auto vmbr3
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iface vmbr3 inet manual
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bridge_ports vxlan3
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bridge_stp off
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bridge_fd 0
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----
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/etc/frr/frr.conf
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----
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router bgp 1234
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no bgp default ipv4-unicast
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coalesce-time 1000
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neighbor 192.168.0.2 remote-as 1234
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neighbor 192.168.0.3 remote-as 1234
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!
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address-family l2vpn evpn
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neighbor 192.168.0.2 activate
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neighbor 192.168.0.3 activate
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advertise-all-vni
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exit-address-family
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!
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line vty
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!
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----
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* node2
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----
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auto eno1
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iface eno1 inet manual
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auto vmbr0
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iface vmbr0 inet static
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address 192.168.0.2
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netmask 255.255.255.0
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bridge_ports eno1
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bridge_stp off
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bridge_fd 0
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auto vxlan2
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iface vxlan2 inet manual
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vxlan-local-tunnelip 192.168.0.2
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bridge-learning off
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bridge-arp-nd-suppress on
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bridge-unicast-flood off
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bridge-multicast-flood off
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auto vmbr2
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iface vmbr2 inet manual
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bridge_ports vxlan2
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bridge_stp off
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bridge_fd 0
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auto vxlan3
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iface vxlan3 inet manual
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vxlan-local-tunnelip 192.168.0.2
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bridge-learning off
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bridge-arp-nd-suppress on
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bridge-unicast-flood off
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bridge-multicast-flood off
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auto vmbr3
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iface vmbr3 inet manual
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bridge_ports vxlan3
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bridge_stp off
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bridge_fd 0
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----
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/etc/frr/frr.conf
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----
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router bgp 1234
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no bgp default ipv4-unicast
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coalesce-time 1000
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neighbor 192.168.0.1 remote-as 1234
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neighbor 192.168.0.3 remote-as 1234
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!
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address-family l2vpn evpn
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neighbor 192.168.0.1 activate
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neighbor 192.168.0.3 activate
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advertise-all-vni
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exit-address-family
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!
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line vty
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!
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----
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* node3
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----
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auto eno1
|
||||
iface eno1 inet manual
|
||||
|
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auto vmbr0
|
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iface vmbr0 inet static
|
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address 192.168.0.2
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netmask 255.255.255.0
|
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bridge_ports eno1
|
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bridge_stp off
|
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bridge_fd 0
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auto vxlan2
|
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iface vxlan2 inet manual
|
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vxlan-local-tunnelip 192.168.0.3
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bridge-learning off
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bridge-arp-nd-suppress on
|
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bridge-unicast-flood off
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bridge-multicast-flood off
|
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|
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|
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auto vmbr2
|
||||
iface vmbr2 inet manual
|
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bridge_ports vxlan2
|
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bridge_stp off
|
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bridge_fd 0
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan-local-tunnelip 192.168.0.3
|
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bridge-learning off
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bridge-arp-nd-suppress on
|
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bridge-unicast-flood off
|
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bridge-multicast-flood off
|
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|
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|
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auto vmbr3
|
||||
iface vmbr3 inet manual
|
||||
bridge_ports vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
----
|
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|
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|
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/etc/frr/frr.conf
|
||||
|
||||
|
||||
----
|
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router bgp 1234
|
||||
no bgp default ipv4-unicast
|
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coalesce-time 1000
|
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neighbor 192.168.0.1 remote-as 1234
|
||||
neighbor 192.168.0.2 remote-as 1234
|
||||
!
|
||||
address-family l2vpn evpn
|
||||
neighbor 192.168.0.1 activate
|
||||
neighbor 192.168.0.2 activate
|
||||
advertise-all-vni
|
||||
exit-address-family
|
||||
!
|
||||
line vty
|
||||
!
|
||||
----
|
||||
|
||||
|
||||
VXLAN layer2 with vlan aware linux bridges
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
We use 1 vmbr bridge, each vxlan is mapped to a vlan
|
||||
|
||||
image::images/vxlan-l2-vlanaware.svg["vxlan l2 bridge vlan aware",align="center"]
|
||||
|
||||
multicast mode
|
||||
^^^^^^^^^^^^^^
|
||||
|
||||
* node1
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.1
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan2
|
||||
iface vxlan2 inet manual
|
||||
vxlan-svcnodeip 225.20.1.1
|
||||
vxlan-physdev eno1
|
||||
bridge-access 2
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan-svcnodeip 225.20.1.1
|
||||
vxlan-physdev eno1
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
* node2
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.2
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan2
|
||||
iface vxlan2 inet manual
|
||||
vxlan-svcnodeip 225.20.1.1
|
||||
vxlan-physdev eno1
|
||||
bridge-access 2
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan-svcnodeip 225.20.1.1
|
||||
vxlan-physdev eno1
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
* node3
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.3
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan2
|
||||
iface vxlan2 inet manual
|
||||
vxlan-svcnodeip 225.20.1.1
|
||||
vxlan-physdev eno1
|
||||
bridge-access 2
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan-svcnodeip 225.20.1.1
|
||||
vxlan-physdev eno1
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
unicast mode
|
||||
^^^^^^^^^^^^
|
||||
|
||||
* node1
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.1
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan2
|
||||
iface vxlan2 inet manual
|
||||
vxlan_remoteip 192.168.0.2
|
||||
vxlan_remoteip 192.168.0.3
|
||||
bridge-access 2
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan_remoteip 192.168.0.2
|
||||
vxlan_remoteip 192.168.0.3
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
* node2
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.2
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan2
|
||||
iface vxlan2 inet manual
|
||||
vxlan_remoteip 192.168.0.1
|
||||
vxlan_remoteip 192.168.0.3
|
||||
bridge-access 2
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan_remoteip 192.168.0.1
|
||||
vxlan_remoteip 192.168.0.3
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
* node3
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.3
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan2
|
||||
iface vxlan2 inet manual
|
||||
vxlan_remoteip 192.168.0.2
|
||||
vxlan_remoteip 192.168.0.3
|
||||
bridge-access 2
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan_remoteip 192.168.0.2
|
||||
vxlan_remoteip 192.168.0.3
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
bgp-evpn
|
||||
^^^^^^^^
|
||||
|
||||
Note: currently FRR is working only with 1 vlan aware bridge
|
||||
|
||||
* node1
|
||||
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.1
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan0
|
||||
iface vxlan0 inet manual
|
||||
vxlan-local-tunnelip 192.168.0.1
|
||||
bridge-learning off
|
||||
bridge-arp-nd-suppress on
|
||||
bridge-unicast-flood off
|
||||
bridge-multicast-flood off
|
||||
bridge-access 2
|
||||
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan-local-tunnelip 192.168.0.1
|
||||
bridge-learning off
|
||||
bridge-arp-nd-suppress on
|
||||
bridge-unicast-flood off
|
||||
bridge-multicast-flood off
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
/etc/frr/frr.conf
|
||||
|
||||
----
|
||||
router bgp 1234
|
||||
no bgp default ipv4-unicast
|
||||
coalesce-time 1000
|
||||
neighbor 192.168.0.2 remote-as 1234
|
||||
neighbor 192.168.0.3 remote-as 1234
|
||||
!
|
||||
address-family l2vpn evpn
|
||||
neighbor 192.168.0.2 activate
|
||||
neighbor 192.168.0.3 activate
|
||||
advertise-all-vni
|
||||
exit-address-family
|
||||
!
|
||||
line vty
|
||||
!
|
||||
----
|
||||
|
||||
|
||||
* node2
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.2
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan0
|
||||
iface vxlan0 inet manual
|
||||
vxlan-local-tunnelip 192.168.0.2
|
||||
bridge-learning off
|
||||
bridge-arp-nd-suppress on
|
||||
bridge-unicast-flood off
|
||||
bridge-multicast-flood off
|
||||
bridge-access 2
|
||||
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan-local-tunnelip 192.168.0.2
|
||||
bridge-learning off
|
||||
bridge-arp-nd-suppress on
|
||||
bridge-unicast-flood off
|
||||
bridge-multicast-flood off
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
/etc/frr/frr.conf
|
||||
|
||||
----
|
||||
router bgp 1234
|
||||
no bgp default ipv4-unicast
|
||||
coalesce-time 1000
|
||||
neighbor 192.168.0.1 remote-as 1234
|
||||
neighbor 192.168.0.3 remote-as 1234
|
||||
!
|
||||
address-family l2vpn evpn
|
||||
neighbor 192.168.0.1 activate
|
||||
neighbor 192.168.0.3 activate
|
||||
advertise-all-vni
|
||||
exit-address-family
|
||||
!
|
||||
line vty
|
||||
!
|
||||
----
|
||||
|
||||
|
||||
* node3
|
||||
|
||||
----
|
||||
auto eno1
|
||||
iface eno1 inet manual
|
||||
|
||||
auto vmbr0
|
||||
iface vmbr0 inet static
|
||||
address 192.168.0.3
|
||||
netmask 255.255.255.0
|
||||
bridge_ports eno1 vxlan2 vxlan3
|
||||
bridge_stp off
|
||||
bridge_fd 0
|
||||
bridge_vlan_aware yes
|
||||
|
||||
auto vxlan0
|
||||
iface vxlan0 inet manual
|
||||
vxlan-local-tunnelip 192.168.0.3
|
||||
bridge-learning off
|
||||
bridge-arp-nd-suppress on
|
||||
bridge-unicast-flood off
|
||||
bridge-multicast-flood off
|
||||
bridge-access 2
|
||||
|
||||
|
||||
auto vxlan3
|
||||
iface vxlan3 inet manual
|
||||
vxlan-local-tunnelip 192.168.0.3
|
||||
bridge-learning off
|
||||
bridge-arp-nd-suppress on
|
||||
bridge-unicast-flood off
|
||||
bridge-multicast-flood off
|
||||
bridge-access 3
|
||||
----
|
||||
|
||||
|
||||
/etc/frr/frr.conf
|
||||
----
|
||||
router bgp 1234
|
||||
no bgp default ipv4-unicast
|
||||
coalesce-time 1000
|
||||
neighbor 192.168.0.1 remote-as 1234
|
||||
neighbor 192.168.0.2 remote-as 1234
|
||||
!
|
||||
address-family l2vpn evpn
|
||||
neighbor 192.168.0.1 activate
|
||||
neighbor 192.168.0.2 activate
|
||||
advertise-all-vni
|
||||
exit-address-family
|
||||
!
|
||||
line vty
|
||||
!
|
||||
----
|
||||
Loading…
x
Reference in New Issue
Block a user