VXLAN
VXLANs provide a way to create a virtual network on top of layer 2 and layer 3 technologies. Organizations, such as data centers, use them because they require larger scale without additional infrastructure and more flexibility than is available with existing infrastructure equipment.
With NetQ, a network administrator can monitor VXLANs in the data center. NetQ provides the ability to:
- Manage virtual constructs: view the performance and status of VXLANs
- Validate overlay communication paths
It helps answer questions such as:
- Is my overlay configured and operating correctly?
- Is my control plane configured correctly?
- Can device A reach device B?
You can monitor your VXLANs using the following commands:
netq [<hostname>] show vxlan [vni <text-vni>] [around <text-time>] [json]
netq show interfaces type vxlan [state <remote-interface-state>] [around <text-time>] [json]
netq <hostname> show interfaces type vxlan [state <remote-interface-state>] [around <text-time>] [count] [json]
netq [<hostname>] show events [level info|level error|level warning|level critical|level debug] type vxlan [between <text-time> and <text-endtime>] [json]
When entering a time value, you must include a numeric value and the unit of measure:
- w: weeks
- d: days
- h: hours
- m: minutes
- s: seconds
- now
For the between option, you can enter the start (<text-time>) and end time (text-endtime>) values as most recent first and least recent second, or vice versa. The values do not have to have the same unit of measure.
View All VXLANs in Your Network
You can view a list of configured VXLANs for all devices, including the VNI (VXLAN network identifier), protocol, address of associated VTEPs (VXLAN tunnel endpoint), replication list, and the last time it changed. You can also view VXLAN information for a given device by adding a hostname to the show command. You can filter the results by VNI.
This example shows all configured VXLANs across the network. In this network, there are three VNIs (13, 24, and 104001) associated with three VLANs (13, 24, 4001), EVPN is the virtual protocol deployed, and the configuration was last changed around 23 hours ago.
cumulus@switch:~$ netq show vxlan
Matching vxlan records:
Hostname VNI Protoc VTEP IP VLAN Replication List Last Changed
ol
----------------- ---------- ------ ---------------- ------ ----------------------------------- -------------------------
exit01 104001 EVPN 10.0.0.41 4001 Fri Feb 8 01:35:49 2019
exit02 104001 EVPN 10.0.0.42 4001 Fri Feb 8 01:35:49 2019
leaf01 13 EVPN 10.0.0.112 13 10.0.0.134(leaf04, leaf03) Fri Feb 8 01:35:49 2019
leaf01 24 EVPN 10.0.0.112 24 10.0.0.134(leaf04, leaf03) Fri Feb 8 01:35:49 2019
leaf01 104001 EVPN 10.0.0.112 4001 Fri Feb 8 01:35:49 2019
leaf02 13 EVPN 10.0.0.112 13 10.0.0.134(leaf04, leaf03) Fri Feb 8 01:35:49 2019
leaf02 24 EVPN 10.0.0.112 24 10.0.0.134(leaf04, leaf03) Fri Feb 8 01:35:49 2019
leaf02 104001 EVPN 10.0.0.112 4001 Fri Feb 8 01:35:49 2019
leaf03 13 EVPN 10.0.0.134 13 10.0.0.112(leaf02, leaf01) Fri Feb 8 01:35:49 2019
leaf03 24 EVPN 10.0.0.134 24 10.0.0.112(leaf02, leaf01) Fri Feb 8 01:35:49 2019
leaf03 104001 EVPN 10.0.0.134 4001 Fri Feb 8 01:35:49 2019
leaf04 13 EVPN 10.0.0.134 13 10.0.0.112(leaf02, leaf01) Fri Feb 8 01:35:49 2019
leaf04 24 EVPN 10.0.0.134 24 10.0.0.112(leaf02, leaf01) Fri Feb 8 01:35:49 2019
leaf04 104001 EVPN 10.0.0.134 4001 Fri Feb 8 01:35:49 2019
This example shows the events and configuration changes that occurred on the VXLANs in your network in the last 24 hours. In this case, the change involved adding the EVPN configuration to each of the devices in the last 24 hours.
cumulus@switch:~$ netq show events type vxlan between now and 24h
Matching vxlan records:
Hostname VNI Protoc VTEP IP VLAN Replication List DB State Last Changed
ol
----------------- ---------- ------ ---------------- ------ ----------------------------------- ---------- -------------------------
exit02 104001 EVPN 10.0.0.42 4001 Add Fri Feb 8 01:35:49 2019
exit02 104001 EVPN 10.0.0.42 4001 Add Fri Feb 8 01:35:49 2019
exit02 104001 EVPN 10.0.0.42 4001 Add Fri Feb 8 01:35:49 2019
exit02 104001 EVPN 10.0.0.42 4001 Add Fri Feb 8 01:35:49 2019
exit02 104001 EVPN 10.0.0.42 4001 Add Fri Feb 8 01:35:49 2019
exit02 104001 EVPN 10.0.0.42 4001 Add Fri Feb 8 01:35:49 2019
exit02 104001 EVPN 10.0.0.42 4001 Add Fri Feb 8 01:35:49 2019
exit01 104001 EVPN 10.0.0.41 4001 Add Fri Feb 8 01:35:49 2019
exit01 104001 EVPN 10.0.0.41 4001 Add Fri Feb 8 01:35:49 2019
exit01 104001 EVPN 10.0.0.41 4001 Add Fri Feb 8 01:35:49 2019
exit01 104001 EVPN 10.0.0.41 4001 Add Fri Feb 8 01:35:49 2019
exit01 104001 EVPN 10.0.0.41 4001 Add Fri Feb 8 01:35:49 2019
exit01 104001 EVPN 10.0.0.41 4001 Add Fri Feb 8 01:35:49 2019
exit01 104001 EVPN 10.0.0.41 4001 Add Fri Feb 8 01:35:49 2019
exit01 104001 EVPN 10.0.0.41 4001 Add Fri Feb 8 01:35:49 2019
leaf04 104001 EVPN 10.0.0.134 4001 Add Fri Feb 8 01:35:49 2019
leaf04 104001 EVPN 10.0.0.134 4001 Add Fri Feb 8 01:35:49 2019
leaf04 104001 EVPN 10.0.0.134 4001 Add Fri Feb 8 01:35:49 2019
leaf04 104001 EVPN 10.0.0.134 4001 Add Fri Feb 8 01:35:49 2019
leaf04 104001 EVPN 10.0.0.134 4001 Add Fri Feb 8 01:35:49 2019
leaf04 104001 EVPN 10.0.0.134 4001 Add Fri Feb 8 01:35:49 2019
leaf04 104001 EVPN 10.0.0.134 4001 Add Fri Feb 8 01:35:49 2019
leaf04 13 EVPN 10.0.0.134 13 10.0.0.112() Add Fri Feb 8 01:35:49 2019
leaf04 13 EVPN 10.0.0.134 13 10.0.0.112() Add Fri Feb 8 01:35:49 2019
leaf04 13 EVPN 10.0.0.134 13 10.0.0.112() Add Fri Feb 8 01:35:49 2019
leaf04 13 EVPN 10.0.0.134 13 10.0.0.112() Add Fri Feb 8 01:35:49 2019
leaf04 13 EVPN 10.0.0.134 13 10.0.0.112() Add Fri Feb 8 01:35:49 2019
leaf04 13 EVPN 10.0.0.134 13 10.0.0.112() Add Fri Feb 8 01:35:49 2019
leaf04 13 EVPN 10.0.0.134 13 10.0.0.112() Add Fri Feb 8 01:35:49 2019
...
Therefore, if you looked for the VXLAN configuration and status for last week, you would find either another configuration or no configuration. This example shows that no VXLAN configuration was present.
cumulus@switch:~$ netq show vxlan around 7d
No matching vxlan records found
You can filter the list of VXLANs to view only those associated with a particular VNI. The VNI option lets you specify single VNI (100), a range of VNIs (10-100), or provide a comma-separated list (10,11,12). This example shows the configured VXLANs for VNI 24.
cumulus@switch:~$ netq show vxlan vni 24
Matching vxlan records:
Hostname VNI Protoc VTEP IP VLAN Replication List Last Changed
ol
----------------- ---------- ------ ---------------- ------ ----------------------------------- -------------------------
leaf01 24 EVPN 10.0.0.112 24 10.0.0.134(leaf04, leaf03) Fri Feb 8 01:35:49 2019
leaf02 24 EVPN 10.0.0.112 24 10.0.0.134(leaf04, leaf03) Fri Feb 8 01:35:49 2019
leaf03 24 EVPN 10.0.0.134 24 10.0.0.112(leaf02, leaf01) Fri Feb 8 01:35:49 2019
leaf04 24 EVPN 10.0.0.134 24 10.0.0.112(leaf02, leaf01) Fri Feb 8 01:35:49 2019
View the Interfaces Associated with VXLANs
You can view detailed information about the VXLAN interfaces using the netq show interface command. You can also view this information for a given device by adding a hostname to the show command. This example shows the detailed VXLAN interface information for the leaf02 switch.
cumulus@switch:~$ netq leaf02 show interfaces type vxlan
Matching link records:
Hostname Interface Type State VRF Details Last Changed
----------------- ------------------------- ---------------- ---------- --------------- ----------------------------------- -------------------------
leaf02 vni13 vxlan up default VNI: 13, PVID: 13, Master: bridge, Fri Feb 8 01:35:49 2019
VTEP: 10.0.0.112, MTU: 9000
leaf02 vni24 vxlan up default VNI: 24, PVID: 24, Master: bridge, Fri Feb 8 01:35:49 2019
VTEP: 10.0.0.112, MTU: 9000
leaf02 vxlan4001 vxlan up default VNI: 104001, PVID: 4001, Fri Feb 8 01:35:49 2019
Master: bridge, VTEP: 10.0.0.112,
MTU: 1500