MAC Addresses
A MAC (media access control) address is a layer 2 construct that uses 48 bits to uniquely identify a network interface controller (NIC) for communication within a network.
With NetQ, you can:
- View MAC address across the network and for a given device, VLAN, egress port on a VLAN, and VRR
- View a count of MAC addresses on a given device
- View where MAC addresses have lived in the network (MAC history)
- View commentary on changes to MAC addresses (MAC commentary)
- View events related to MAC addresses
MAC addresses are associated with switch interfaces. They are classified as:
- Origin: MAC address is owned by a particular switch, on one or more interfaces. A MAC address typically has only one origin node. The exceptions are when MLAG is configured, the MAC on the VRR interfaces for the MLAG pair is the same, and when EVPN is configured, the MAC is distributed across the layer 3 gateways.
- Remote: MAC address is learned or distributed by the control plane on a tunnel interface pointing to a particular remote location. For a given MAC address and VLAN there is only one first-hop switch (or switch pair), but multiple nodes can have the same remote MAC address.
- Local (not origin and not remote): MAC address is learned on a bridge and points to an interface on another switch. If the LLDP neighbor of the interface is a host, then this switch is the first-hop switch where the MAC address is learned. For a given MAC address and VLAN there is only one first-hop switch, except if the switches are part of an MLAG pair, and the interfaces on both switches form a dually or singly connected bond.
The NetQ UI provides a listing of current MAC addresses that you can filter by hostname, timestamp, MAC address, VLAN, and origin. You can sort the list by these parameters and also remote, static, and next hop.
Monitor MAC addresses with the following commands. Refer to the command line reference for additional options, definitions, and examples.
netq show macs
netq <hostname> show macs egress-port <egress-port>
netq show mac-history <mac>
netq show mac-commentary <mac> vlan <1-4096>
netq show events message_type macs
View MAC Addresses Networkwide
You can view all MAC addresses across your network with the NetQ UI or the NetQ CLI.
-
Select the
Menu. -
Under the Network section, select MACs.
Use the netq show macs command to view all MAC addresses.
This example shows all MAC addresses in the Cumulus Networks reference topology.
cumulus@switch:~$ netq show macs
Matching mac records:
Origin MAC Address VLAN Hostname Egress Port Remote Last Changed
------ ------------------ ------ ----------------- ------------------------------ ------ -------------------------
no 46:38:39:00:00:46 20 leaf04 bond2 no Tue Oct 27 22:29:07 2020
yes 44:38:39:00:00:5e 20 leaf04 bridge no Tue Oct 27 22:29:07 2020
yes 00:00:00:00:00:1a 10 leaf04 bridge no Tue Oct 27 22:29:07 2020
yes 44:38:39:00:00:5e 4002 leaf04 bridge no Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:5d 30 leaf04 peerlink no Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:37 30 leaf04 vni30 no Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:59 30 leaf04 vni30 no Tue Oct 27 22:29:07 2020
yes 7e:1a:b3:4f:05:b8 20 leaf04 vni20 no Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:36 30 leaf04 vni30 yes Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:59 20 leaf04 vni20 no Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:37 20 leaf04 vni20 no Tue Oct 27 22:29:07 2020
...
yes 7a:4a:c7:bb:48:27 4001 border01 vniRED no Tue Oct 27 22:28:48 2020
yes ce:93:1d:e3:08:1b 4002 border01 vniBLUE no Tue Oct 27 22:28:48 2020
View MAC Addresses for a Given Device
-
Select the
Menu. -
Under the Network section, select MACs.
-
Click
Filters and enter a hostname:
- Click Apply.
Use the netq <hostname> show macs command to view MAC address on a given device.
This example shows all MAC addresses on the leaf03 switch.
cumulus@switch:~$ netq leaf03 show macs
Matching mac records:
Origin MAC Address VLAN Hostname Egress Port Remote Last Changed
------ ------------------ ------ ----------------- ------------------------------ ------ -------------------------
yes 2e:3d:b4:55:40:ba 4002 leaf03 vniBLUE no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:5e 20 leaf03 peerlink no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:46 20 leaf03 bond2 no Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 4001 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 00:00:00:00:00:1a 10 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 30 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 26:6e:54:35:3b:28 4001 leaf03 vniRED no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:37 30 leaf03 vni30 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:59 30 leaf03 vni30 no Tue Oct 27 22:28:24 2020
yes 72:78:e6:4e:3d:4c 20 leaf03 vni20 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:36 30 leaf03 vni30 yes Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:59 20 leaf03 vni20 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:37 20 leaf03 vni20 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:59 10 leaf03 vni10 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:37 10 leaf03 vni10 no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:48 30 leaf03 bond3 no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:38 10 leaf03 vni10 yes Tue Oct 27 22:28:24 2020
yes 36:99:0d:48:51:41 10 leaf03 vni10 no Tue Oct 27 22:28:24 2020
yes 1a:6e:d8:ed:d2:04 30 leaf03 vni30 no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:36 30 leaf03 vni30 yes Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:5e 30 leaf03 peerlink no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:3e 10 leaf03 bond1 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:34 20 leaf03 vni20 yes Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:5e 10 leaf03 peerlink no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:3c 30 leaf03 vni30 yes Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:3e 10 leaf03 bond1 no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:34 20 leaf03 vni20 yes Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:42 30 leaf03 bond3 no Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 4002 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 20 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:be:ef:bb 4002 leaf03 bridge no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:32 10 leaf03 vni10 yes Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 10 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 00:00:00:00:00:1b 20 leaf03 bridge no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:44 10 leaf03 bond1 no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:42 30 leaf03 bond3 no Tue Oct 27 22:28:24 2020
yes 44:38:39:be:ef:bb 4001 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 00:00:00:00:00:1c 30 leaf03 bridge no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:32 10 leaf03 vni10 yes Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:40 20 leaf03 bond2 no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:3a 20 leaf03 vni20 yes Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:40 20 leaf03 bond2 no Tue Oct 27 22:28:24 2020
View MAC Addresses Associated with a VLAN
-
Select the
Menu. -
Under the Network section, select MACs.
-
Click
Filters and enter a VLAN ID. -
Click Apply.
-
(Optional) Select
Filters and add the additional hostname filter to view the MAC addresses for a VLAN on a particular device.
Use the netq show macs command with the vlan option to view the MAC addresses for a given VLAN.
This example shows the MAC addresses associated with VLAN 10.
cumulus@switch:~$ netq show macs vlan 10
Matching mac records:
Origin MAC Address VLAN Hostname Egress Port Remote Last Changed
------ ------------------ ------ ----------------- ------------------------------ ------ -------------------------
yes 00:00:00:00:00:1a 10 leaf04 bridge no Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:37 10 leaf04 vni10 no Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:59 10 leaf04 vni10 no Tue Oct 27 22:29:07 2020
no 46:38:39:00:00:38 10 leaf04 vni10 yes Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:3e 10 leaf04 bond1 no Tue Oct 27 22:29:07 2020
no 46:38:39:00:00:3e 10 leaf04 bond1 no Tue Oct 27 22:29:07 2020
yes 44:38:39:00:00:5e 10 leaf04 bridge no Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:32 10 leaf04 vni10 yes Tue Oct 27 22:29:07 2020
no 44:38:39:00:00:5d 10 leaf04 peerlink no Tue Oct 27 22:29:07 2020
no 46:38:39:00:00:44 10 leaf04 bond1 no Tue Oct 27 22:29:07 2020
no 46:38:39:00:00:32 10 leaf04 vni10 yes Tue Oct 27 22:29:07 2020
yes 36:ae:d2:23:1d:8c 10 leaf04 vni10 no Tue Oct 27 22:29:07 2020
yes 00:00:00:00:00:1a 10 leaf03 bridge no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:59 10 leaf03 vni10 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:37 10 leaf03 vni10 no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:38 10 leaf03 vni10 yes Tue Oct 27 22:28:24 2020
yes 36:99:0d:48:51:41 10 leaf03 vni10 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:3e 10 leaf03 bond1 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:5e 10 leaf03 peerlink no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:3e 10 leaf03 bond1 no Tue Oct 27 22:28:24 2020
no 44:38:39:00:00:32 10 leaf03 vni10 yes Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 10 leaf03 bridge no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:44 10 leaf03 bond1 no Tue Oct 27 22:28:24 2020
no 46:38:39:00:00:32 10 leaf03 vni10 yes Tue Oct 27 22:28:24 2020
yes 00:00:00:00:00:1a 10 leaf02 bridge no Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:59 10 leaf02 peerlink no Tue Oct 27 22:28:51 2020
yes 44:38:39:00:00:37 10 leaf02 bridge no Tue Oct 27 22:28:51 2020
no 46:38:39:00:00:38 10 leaf02 bond1 no Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:3e 10 leaf02 vni10 yes Tue Oct 27 22:28:51 2020
no 46:38:39:00:00:3e 10 leaf02 vni10 yes Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:5e 10 leaf02 vni10 no Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:5d 10 leaf02 vni10 no Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:32 10 leaf02 bond1 no Tue Oct 27 22:28:51 2020
no 46:38:39:00:00:44 10 leaf02 vni10 yes Tue Oct 27 22:28:51 2020
no 46:38:39:00:00:32 10 leaf02 bond1 no Tue Oct 27 22:28:51 2020
yes 4a:32:30:8c:13:08 10 leaf02 vni10 no Tue Oct 27 22:28:51 2020
yes 00:00:00:00:00:1a 10 leaf01 bridge no Tue Oct 27 22:28:42 2020
no 44:38:39:00:00:37 10 leaf01 peerlink no Tue Oct 27 22:28:42 2020
yes 44:38:39:00:00:59 10 leaf01 bridge no Tue Oct 27 22:28:42 2020
no 46:38:39:00:00:38 10 leaf01 bond1 no Tue Oct 27 22:28:42 2020
no 44:38:39:00:00:3e 10 leaf01 vni10 yes Tue Oct 27 22:28:43 2020
no 46:38:39:00:00:3e 10 leaf01 vni10 yes Tue Oct 27 22:28:42 2020
no 44:38:39:00:00:5e 10 leaf01 vni10 no Tue Oct 27 22:28:42 2020
no 44:38:39:00:00:5d 10 leaf01 vni10 no Tue Oct 27 22:28:42 2020
no 44:38:39:00:00:32 10 leaf01 bond1 no Tue Oct 27 22:28:43 2020
no 46:38:39:00:00:44 10 leaf01 vni10 yes Tue Oct 27 22:28:43 2020
no 46:38:39:00:00:32 10 leaf01 bond1 no Tue Oct 27 22:28:42 2020
yes 52:37:ca:35:d3:70 10 leaf01 vni10 no Tue Oct 27 22:28:42 2020
Use the netq show macs command with the hostname and vlan options to view the MAC addresses for a given VLAN on a particular device.
This example shows the MAC addresses associated with VLAN 10 on the leaf02 switch.
cumulus@switch:~$ netq leaf02 show macs vlan 10
Matching mac records:
Origin MAC Address VLAN Hostname Egress Port Remote Last Changed
------ ------------------ ------ ----------------- ------------------------------ ------ -------------------------
yes 00:00:00:00:00:1a 10 leaf02 bridge no Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:59 10 leaf02 peerlink no Tue Oct 27 22:28:51 2020
yes 44:38:39:00:00:37 10 leaf02 bridge no Tue Oct 27 22:28:51 2020
no 46:38:39:00:00:38 10 leaf02 bond1 no Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:3e 10 leaf02 vni10 yes Tue Oct 27 22:28:51 2020
no 46:38:39:00:00:3e 10 leaf02 vni10 yes Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:5e 10 leaf02 vni10 no Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:5d 10 leaf02 vni10 no Tue Oct 27 22:28:51 2020
no 44:38:39:00:00:32 10 leaf02 bond1 no Tue Oct 27 22:28:51 2020
no 46:38:39:00:00:44 10 leaf02 vni10 yes Tue Oct 27 22:28:51 2020
no 46:38:39:00:00:32 10 leaf02 bond1 no Tue Oct 27 22:28:51 2020
yes 4a:32:30:8c:13:08 10 leaf02 vni10 no Tue Oct 27 22:28:51 2020
View MAC Addresses Associated with an Egress Port
-
Select the
Menu. -
Under the Network section, select MACs.
-
Locate the Egress port column. Hover over the column header and select it to sort A-Z or Z-A order of the egress port used by a MAC address.
-
(Optional) Click
Filters and enter a hostname to view the MAC addresses on a particular device.
Use the netq <hostname> show macs egress-port <egress-port> command to view the MAC addresses on a given device that use a given egress port. Note that you cannot view this information across all devices.
This example shows MAC addresses associated with the leaf03 switch that use the bridge port for egress.
cumulus@switch:~$ netq leaf03 show macs egress-port bridge
Matching mac records:
Origin MAC Address VLAN Hostname Egress Port Remote Last Changed
------ ------------------ ------ ----------------- ------------------------------ ------ -------------------------
yes 44:38:39:00:00:5d 4001 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 00:00:00:00:00:1a 10 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 30 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 4002 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 20 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:be:ef:bb 4002 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:00:00:5d 10 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 00:00:00:00:00:1b 20 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 44:38:39:be:ef:bb 4001 leaf03 bridge no Tue Oct 27 22:28:24 2020
yes 00:00:00:00:00:1c 30 leaf03 bridge no Tue Oct 27 22:28:24 2020
View MAC Addresses Associated with VRR Configurations
You can view all MAC addresses associated with your VRR (virtual router reflector) interface configuration using the netq show interfaces type macvlan command. This is useful for determining if the specified MAC address inside a VLAN is the same or different across your VRR configuration.
cumulus@switch:~$ netq show interfaces type macvlan
Matching link records:
Hostname Interface Type State VRF Details Last Changed
----------------- ------------------------- ---------------- ---------- --------------- ----------------------------------- -------------------------
leaf01 vlan10-v0 macvlan up RED MAC: 00:00:00:00:00:1a, Tue Oct 27 22:28:42 2020
Mode: Private
leaf01 vlan20-v0 macvlan up RED MAC: 00:00:00:00:00:1b, Tue Oct 27 22:28:42 2020
Mode: Private
leaf01 vlan30-v0 macvlan up BLUE MAC: 00:00:00:00:00:1c, Tue Oct 27 22:28:42 2020
Mode: Private
leaf02 vlan10-v0 macvlan up RED MAC: 00:00:00:00:00:1a, Tue Oct 27 22:28:51 2020
Mode: Private
leaf02 vlan20-v0 macvlan up RED MAC: 00:00:00:00:00:1b, Tue Oct 27 22:28:51 2020
Mode: Private
leaf02 vlan30-v0 macvlan up BLUE MAC: 00:00:00:00:00:1c, Tue Oct 27 22:28:51 2020
Mode: Private
leaf03 vlan10-v0 macvlan up RED MAC: 00:00:00:00:00:1a, Tue Oct 27 22:28:23 2020
Mode: Private
leaf03 vlan20-v0 macvlan up RED MAC: 00:00:00:00:00:1b, Tue Oct 27 22:28:23 2020
Mode: Private
leaf03 vlan30-v0 macvlan up BLUE MAC: 00:00:00:00:00:1c, Tue Oct 27 22:28:23 2020
Mode: Private
leaf04 vlan10-v0 macvlan up RED MAC: 00:00:00:00:00:1a, Tue Oct 27 22:29:06 2020
Mode: Private
leaf04 vlan20-v0 macvlan up RED MAC: 00:00:00:00:00:1b, Tue Oct 27 22:29:06 2020
Mode: Private
leaf04 vlan30-v0 macvlan up BLUE MAC: 00:00:00:00:00:1c, Tue Oct 27 22:29:06 2020
Mode: Private
View the History of a MAC Address
It is useful when debugging to be able to see whether a MAC address is learned, where it moved in the network after that, if there was a duplicate at any time, and so forth. The netq show mac-history command makes this information available. It enables you to see:
- Each change made chronologically.
- Changes made between two points in time, using the
betweenoption. - Only the differences in the changes between two points in time using the
diffoption. - The output ordered by selected output fields using the
listbyoption. - Each change made for the MAC address on a particular VLAN, using the
vlanoption.
The default time range used is now to one hour ago. You can view the output in JSON format as well.
View MAC Address Changes in Chronological Order
View the full listing of changes for a MAC address for the last hour in chronological order using the netq show mac-history command.
This example shows how to view a full chronology of changes for a MAC address of 44:38:39:00:00:5d. When shown, the caret (^) notation indicates no change in this value from the row above.
cumulus@switch:~$ netq show mac-history 44:38:39:00:00:5d
Matching machistory records:
Last Changed Hostname VLAN Origin Link Destination Remote Static
------------------------- ----------------- ------ ------ ---------------- ---------------------- ------ ------------
Tue Oct 27 22:28:24 2020 leaf03 10 yes bridge no no
Tue Oct 27 22:28:42 2020 leaf01 10 no vni10 10.0.1.2 no yes
Tue Oct 27 22:28:51 2020 leaf02 10 no vni10 10.0.1.2 no yes
Tue Oct 27 22:29:07 2020 leaf04 10 no peerlink no yes
Tue Oct 27 22:28:24 2020 leaf03 4002 yes bridge no no
Tue Oct 27 22:28:24 2020 leaf03 0 yes peerlink no no
Tue Oct 27 22:28:24 2020 leaf03 20 yes bridge no no
Tue Oct 27 22:28:42 2020 leaf01 20 no vni20 10.0.1.2 no yes
Tue Oct 27 22:28:51 2020 leaf02 20 no vni20 10.0.1.2 no yes
Tue Oct 27 22:29:07 2020 leaf04 20 no peerlink no yes
Tue Oct 27 22:28:24 2020 leaf03 4001 yes bridge no no
Tue Oct 27 22:28:24 2020 leaf03 30 yes bridge no no
Tue Oct 27 22:28:42 2020 leaf01 30 no vni30 10.0.1.2 no yes
Tue Oct 27 22:28:51 2020 leaf02 30 no vni30 10.0.1.2 no yes
Tue Oct 27 22:29:07 2020 leaf04 30 no peerlink no yes
View MAC Address Changes for a Given Time Frame
View a listing of changes for a MAC address for a given timeframe using the netq show mac-history command with the between option. When shown, the caret (^) notation indicates no change in this value from the row above.
This example shows changes for a MAC address of 44:38:39:00:00:5d between now three and seven days ago.
cumulus@switch:~$ netq show mac-history 44:38:39:00:00:5d between 3d and 7d
Matching machistory records:
Last Changed Hostname VLAN Origin Link Destination Remote Static
------------------------- ----------------- ------ ------ ---------------- ---------------------- ------ ------------
Tue Oct 20 22:28:19 2020 leaf03 10 yes bridge no no
Tue Oct 20 22:28:24 2020 leaf01 10 no vni10 10.0.1.2 no yes
Tue Oct 20 22:28:37 2020 leaf02 10 no vni10 10.0.1.2 no yes
Tue Oct 20 22:28:53 2020 leaf04 10 no peerlink no yes
Wed Oct 21 22:28:19 2020 leaf03 10 yes bridge no no
Wed Oct 21 22:28:26 2020 leaf01 10 no vni10 10.0.1.2 no yes
Wed Oct 21 22:28:44 2020 leaf02 10 no vni10 10.0.1.2 no yes
Wed Oct 21 22:28:55 2020 leaf04 10 no peerlink no yes
Thu Oct 22 22:28:20 2020 leaf03 10 yes bridge no no
Thu Oct 22 22:28:28 2020 leaf01 10 no vni10 10.0.1.2 no yes
Thu Oct 22 22:28:45 2020 leaf02 10 no vni10 10.0.1.2 no yes
Thu Oct 22 22:28:57 2020 leaf04 10 no peerlink no yes
Fri Oct 23 22:28:21 2020 leaf03 10 yes bridge no no
Fri Oct 23 22:28:29 2020 leaf01 10 no vni10 10.0.1.2 no yes
Fri Oct 23 22:28:45 2020 leaf02 10 no vni10 10.0.1.2 no yes
Fri Oct 23 22:28:58 2020 leaf04 10 no peerlink no yes
Sat Oct 24 22:28:28 2020 leaf03 10 yes bridge no no
Sat Oct 24 22:28:29 2020 leaf01 10 no vni10 10.0.1.2 no yes
Sat Oct 24 22:28:45 2020 leaf02 10 no vni10 10.0.1.2 no yes
Sat Oct 24 22:28:59 2020 leaf04 10 no peerlink no yes
Tue Oct 20 22:28:19 2020 leaf03 4002 yes bridge no no
Tue Oct 20 22:28:19 2020 leaf03 0 yes peerlink no no
Tue Oct 20 22:28:19 2020 leaf03 20 yes bridge no no
Tue Oct 20 22:28:24 2020 leaf01 20 no vni20 10.0.1.2 no yes
Tue Oct 20 22:28:37 2020 leaf02 20 no vni20 10.0.1.2 no yes
Tue Oct 20 22:28:53 2020 leaf04 20 no peerlink no yes
Wed Oct 21 22:28:19 2020 leaf03 20 yes bridge no no
Wed Oct 21 22:28:26 2020 leaf01 20 no vni20 10.0.1.2 no yes
Wed Oct 21 22:28:44 2020 leaf02 20 no vni20 10.0.1.2 no yes
Wed Oct 21 22:28:55 2020 leaf04 20 no peerlink no yes
Thu Oct 22 22:28:20 2020 leaf03 20 yes bridge no no
Thu Oct 22 22:28:28 2020 leaf01 20 no vni20 10.0.1.2 no yes
Thu Oct 22 22:28:45 2020 leaf02 20 no vni20 10.0.1.2 no yes
Thu Oct 22 22:28:57 2020 leaf04 20 no peerlink no yes
Fri Oct 23 22:28:21 2020 leaf03 20 yes bridge no no
Fri Oct 23 22:28:29 2020 leaf01 20 no vni20 10.0.1.2 no yes
Fri Oct 23 22:28:45 2020 leaf02 20 no vni20 10.0.1.2 no yes
Fri Oct 23 22:28:58 2020 leaf04 20 no peerlink no yes
Sat Oct 24 22:28:28 2020 leaf03 20 yes bridge no no
Sat Oct 24 22:28:29 2020 leaf01 20 no vni20 10.0.1.2 no yes
Sat Oct 24 22:28:45 2020 leaf02 20 no vni20 10.0.1.2 no yes
Sat Oct 24 22:28:59 2020 leaf04 20 no peerlink no yes
Tue Oct 20 22:28:19 2020 leaf03 4001 yes bridge no no
Tue Oct 20 22:28:19 2020 leaf03 30 yes bridge no no
Tue Oct 20 22:28:24 2020 leaf01 30 no vni30 10.0.1.2 no yes
Tue Oct 20 22:28:37 2020 leaf02 30 no vni30 10.0.1.2 no yes
Tue Oct 20 22:28:53 2020 leaf04 30 no peerlink no yes
Wed Oct 21 22:28:19 2020 leaf03 30 yes bridge no no
Wed Oct 21 22:28:26 2020 leaf01 30 no vni30 10.0.1.2 no yes
Wed Oct 21 22:28:44 2020 leaf02 30 no vni30 10.0.1.2 no yes
Wed Oct 21 22:28:55 2020 leaf04 30 no peerlink no yes
Thu Oct 22 22:28:20 2020 leaf03 30 yes bridge no no
Thu Oct 22 22:28:28 2020 leaf01 30 no vni30 10.0.1.2 no yes
Thu Oct 22 22:28:45 2020 leaf02 30 no vni30 10.0.1.2 no yes
Thu Oct 22 22:28:57 2020 leaf04 30 no peerlink no yes
Fri Oct 23 22:28:21 2020 leaf03 30 yes bridge no no
Fri Oct 23 22:28:29 2020 leaf01 30 no vni30 10.0.1.2 no yes
Fri Oct 23 22:28:45 2020 leaf02 30 no vni30 10.0.1.2 no yes
Fri Oct 23 22:28:58 2020 leaf04 30 no peerlink no yes
Sat Oct 24 22:28:28 2020 leaf03 30 yes bridge no no
Sat Oct 24 22:28:29 2020 leaf01 30 no vni30 10.0.1.2 no yes
Sat Oct 24 22:28:45 2020 leaf02 30 no vni30 10.0.1.2 no yes
Sat Oct 24 22:28:59 2020 leaf04 30 no peerlink no yes
View Only the Differences in MAC Address Changes
Instead of viewing the full chronology of change made for a MAC address within a given timeframe, you can view only the differences between two snapshots using the netq show mac-history command with the diff option. When shown, the caret (^) notation indicates no change in this value from the row above.
This example shows only the differences in the changes for a MAC address of 44:38:39:00:00:5d between now and an hour ago.
cumulus@switch:~$ netq show mac-history 44:38:39:00:00:5d diff
Matching machistory records:
Last Changed Hostname VLAN Origin Link Destination Remote Static
------------------------- ----------------- ------ ------ ---------------- ---------------------- ------ ------------
Tue Oct 27 22:29:07 2020 leaf04 30 no peerlink no yes
This example shows only the differences in the changes for a MAC address of 44:38:39:00:00:5d between now and 30 days ago.
cumulus@switch:~$ netq show mac-history 44:38:39:00:00:5d diff between now and 30d
Matching machistory records:
Last Changed Hostname VLAN Origin Link Destination Remote Static
------------------------- ----------------- ------ ------ ---------------- ---------------------- ------ ------------
Mon Sep 28 00:02:26 2020 leaf04 30 no peerlink no no
Tue Oct 27 22:29:07 2020 leaf04 ^ ^ ^ ^ ^ yes
View MAC Address Changes by a Given Attribute
You can order the output of the MAC address changes by many of the attributes associated with the changes that you can make using the netq show mac-history command with the listby option. For example, you can order the output by hostname, link, destination, and so forth.
This example shows the history of MAC address 44:38:39:00:00:5d ordered by hostname. When shown, the caret (^) notation indicates no change in this value from the row above.
cumulus@switch:~$ netq show mac-history 44:38:39:00:00:5d listby hostname
Matching machistory records:
Last Changed Hostname VLAN Origin Link Destination Remote Static
------------------------- ----------------- ------ ------ ---------------- ---------------------- ------ ------------
Tue Oct 27 22:28:51 2020 leaf02 20 no vni20 10.0.1.2 no yes
Tue Oct 27 22:28:24 2020 leaf03 4001 yes bridge no no
Tue Oct 27 22:28:24 2020 leaf03 0 yes peerlink no no
Tue Oct 27 22:28:24 2020 leaf03 4002 yes bridge no no
Tue Oct 27 22:28:42 2020 leaf01 10 no vni10 10.0.1.2 no yes
Tue Oct 27 22:29:07 2020 leaf04 10 no peerlink no yes
Tue Oct 27 22:29:07 2020 leaf04 30 no peerlink no yes
Tue Oct 27 22:28:42 2020 leaf01 30 no vni30 10.0.1.2 no yes
Tue Oct 27 22:28:42 2020 leaf01 20 no vni20 10.0.1.2 no yes
Tue Oct 27 22:28:51 2020 leaf02 10 no vni10 10.0.1.2 no yes
Tue Oct 27 22:29:07 2020 leaf04 20 no peerlink no yes
Tue Oct 27 22:28:51 2020 leaf02 30 no vni30 10.0.1.2 no yes
Tue Oct 27 22:28:24 2020 leaf03 10 yes bridge no no
Tue Oct 27 22:28:24 2020 leaf03 20 yes bridge no no
Tue Oct 27 22:28:24 2020 leaf03 30 yes bridge no no
View MAC Address Changes for a Given VLAN
View a listing of changes for a MAC address for a given VLAN using the netq show mac-history command with the vlan option. When shown, the caret (^) notation indicates no change in this value from the row above.
This example shows changes for a MAC address of 44:38:39:00:00:5d and VLAN 10.
cumulus@switch:~$ netq show mac-history 44:38:39:00:00:5d vlan 10
Matching machistory records:
Last Changed Hostname VLAN Origin Link Destination Remote Static
------------------------- ----------------- ------ ------ ---------------- ---------------------- ------ ------------
Tue Oct 27 22:28:24 2020 leaf03 10 yes bridge no no
Tue Oct 27 22:28:42 2020 leaf01 10 no vni10 10.0.1.2 no yes
Tue Oct 27 22:28:51 2020 leaf02 10 no vni10 10.0.1.2 no yes
Tue Oct 27 22:29:07 2020 leaf04 10 no peerlink no yes
View MAC Address Commentary
You can get more descriptive information about changes to a given MAC address on a specific VLAN. Commentary is available for the following MAC address-related events based on their classification (refer to the definition of these at the beginning of this topic):
| Event Triggers | Example Commentary |
|---|---|
A MAC address is created, or the MAC address on the interface is changed via the hwaddress option in /etc/network/interface |
leaf01 00:00:5e:00:00:03 configured on interface vlan1000-v0 |
| An interface becomes a slave in, or is removed from, a bond | leaf01 00:00:5e:00:00:03 configured on interface vlan1000-v0 |
| An interface is a bridge and it inherits a different MAC address due to a membership change | leaf01 00:00:5e:00:00:03 configured on interface vlan1000-v0 |
| A remote MAC address is learned or installed by control plane on a tunnel interface | 44:38:39:00:00:5d learned/installed on vni vni10 pointing to remote dest 10.0.1.34 |
| A remote MAC address is flushed or expires | leaf01 44:38:39:00:00:5d is flushed or expired |
| A remote MAC address moves from behind one remote switch to another remote switch or becomes a local MAC address | leaf02: 00:08:00:00:aa:13 moved from remote dest 27.0.0.22 to remote dest 27.0.0.34 00:08:00:00:aa:13 moved from remote dest 27.0.0.22 to local interface hostbond2 |
| A MAC address is learned at the first-hop switch (or MLAG switch pair) | leaf04 (and MLAG peer leaf05): 44:38:39:00:00:5d learned on first hop switch, pointing to local interface bond4 |
| A local MAC address is flushed or expires | leaf04 (and MLAG peer leaf05) 44:38:39:00:00:5d is flushed or expires from bond4 |
| A local MAC address moves from one interface to another interface or to another switch | leaf04: 00:08:00:00:aa:13 moved from hostbond2 to hostbond3 00:08:00:00:aa:13 moved from hostbond2 to remote dest 27.0.0.13 |
To view MAC address commentary:
-
Select the
Menu. -
Under the Network heading, select MACs.
-
Select the checkbox next to one of the entries, then select
Open card above the table. -
Choose a time range, then click Continue.
-
You can scroll through the list to see comments related to the MAC address moves and changes:
- (Optional) From here, you can filter the list by a given device by selecting Filters.
A red dot on the filter icon indicates that filtering is active. To remove the filter, click again, then click Clear Filter.
again, then click Clear Filter.To see MAC address commentary, use the netq show mac-commentary command. The following examples show the commentary seen in common situations.
MAC Address Configured Locally
In this example, the 46:38:39:00:00:44 MAC address was configured on the VlanA-1 interface of multiple switches, so we see the MAC configured commentary on each of them.
cumulus@server-01:~$ netq show mac-commentary 46:38:39:00:00:44 between now and 1hr
Matching mac_commentary records:
Last Updated Hostname VLAN Commentary
------------------------- ---------------- ------ --------------------------------------------------------------------------------
Mon Aug 24 2020 14:14:33 leaf11 100 leaf11: 46:38:39:00:00:44 configured on interface VlanA-1
Mon Aug 24 2020 14:15:03 leaf12 100 leaf12: 46:38:39:00:00:44 configured on interface VlanA-1
Mon Aug 24 2020 14:15:19 leaf21 100 leaf21: 46:38:39:00:00:44 configured on interface VlanA-1
Mon Aug 24 2020 14:15:40 leaf22 100 leaf22: 46:38:39:00:00:44 configured on interface VlanA-1
Mon Aug 24 2020 14:15:19 leaf21 1003 leaf21: 46:38:39:00:00:44 configured on interface VlanA-1
Mon Aug 24 2020 14:15:40 leaf22 1003 leaf22: 46:38:39:00:00:44 configured on interface VlanA-1
Mon Aug 24 2020 14:16:32 leaf02 1003 leaf02: 00:00:5e:00:01:01 configured on interface VlanA-1
MAC Address Configured on Server and Learned from a Peer
In this example, the 00:08:00:00:aa:13 MAC address was configured on server01. As a result, both leaf11 and leaf12 learned this address on the next hop interface serv01bond2 (learned locally), whereas, the leaf01 switch learned this address remotely on vx-34 (learned remotely).
cumulus@server11:~$ netq show mac-commentary 00:08:00:00:aa:13 vlan 1000 between now and 5hr
Matching mac_commentary records:
Last Updated Hostname VLAN Commentary
------------------------- ---------------- ------ --------------------------------------------------------------------------------
Tue Aug 25 2020 10:29:23 leaf12 1000 leaf12: 00:08:00:00:aa:13 learned on first hop switch interface serv01bond2
Tue Aug 25 2020 10:29:23 leaf11 1000 leaf11: 00:08:00:00:aa:13 learned on first hop switch interface serv01bond2
Tue Aug 25 2020 10:29:23 leaf01 1000 leaf01: 00:08:00:00:aa:13 learned/installed on vni vx-34 pointing to remote dest 36.0.0.24
MAC Address Removed
In this example the bridge FDB entry for the 00:02:00:00:00:a0 MAC address, interface VlanA-1, and VLAN 100 was deleted impacting leaf11 and leaf12.
cumulus@server11:~$ netq show mac-commentary 00:02:00:00:00:a0 vlan 100 between now and 5hr
Matching mac_commentary records:
Last Updated Hostname VLAN Commentary
------------------------- ---------------- ------ --------------------------------------------------------------------------------
Mon Aug 24 2020 14:14:33 leaf11 100 leaf11: 00:02:00:00:00:a0 configured on interface VlanA-1
Mon Aug 24 2020 14:15:03 leaf12 100 leaf12: 00:02:00:00:00:a0 learned on first hop switch interface peerlink-1
Tue Aug 25 2020 13:06:52 leaf11 100 leaf11: 00:02:00:00:00:a0 unconfigured on interface VlanA-1
MAC Address Moved on Server and Learned from a Peer
The MAC address on server11 changed from 00:08:00:00:aa:13. In this example, the MAC learned remotely on leaf01 is now a locally learned MAC address from its local interface swp6. Similarly, the locally learned MAC addresses on leaf11 and leaf12 are now learned from remote dest 27.0.0.22.
cumulus@server11:~$ netq show mac-commentary 00:08:00:00:aa:13 vlan 1000 between now and 5hr
Matching mac_commentary records:
Last Updated Hostname VLAN Commentary
------------------------- ---------------- ------ --------------------------------------------------------------------------------
Tue Aug 25 2020 10:29:23 leaf12 1000 leaf12: 00:08:00:00:aa:13 learned on first hop switch interface serv01bond2
Tue Aug 25 2020 10:29:23 leaf11 1000 leaf11: 00:08:00:00:aa:13 learned on first hop switch interface serv01bond2
Tue Aug 25 2020 10:29:23 leaf01 1000 leaf01: 00:08:00:00:aa:13 learned/installed on vni vx-34 pointing to remote dest 36.0.0.24
Tue Aug 25 2020 10:33:06 leaf01 1000 leaf01: 00:08:00:00:aa:13 moved from remote dest 36.0.0.24 to local interface swp6
Tue Aug 25 2020 10:33:06 leaf12 1000 leaf12: 00:08:00:00:aa:13 moved from local interface serv01bond2 to remote dest 27.0.0.22
Tue Aug 25 2020 10:33:06 leaf11 1000 leaf11: 00:08:00:00:aa:13 moved from local interface serv01bond2 to remote dest 27.0.0.22
MAC Address Learned from MLAG Pair
In this example, after the local first hop learning of the 00:02:00:00:00:1c MAC address on leaf11 and leaf12, the MLAG exchanged the learning on the dually connected interface serv01bond3.
cumulus@server11:~$ netq show mac-commentary 00:02:00:00:00:1c vlan 105 between now and 2d
Matching mac_commentary records:
Last Updated Hostname VLAN Commentary
------------------------- ---------------- ------ --------------------------------------------------------------------------------
Sun Aug 23 2020 14:13:39 leaf11 105 leaf11: 00:02:00:00:00:1c learned on first hop switch interface serv01bond3
Sun Aug 23 2020 14:14:02 leaf12 105 leaf12: 00:02:00:00:00:1c learned on first hop switch interface serv01bond3
Sun Aug 23 2020 14:14:16 leaf11 105 leaf11: 00:02:00:00:00:1c moved from interface serv01bond3 to interface serv01bond3
Sun Aug 23 2020 14:14:23 leaf12 105 leaf12: 00:02:00:00:00:1c learned on MLAG peer dually connected interface serv01bond3
Sun Aug 23 2020 14:14:37 leaf11 105 leaf11: 00:02:00:00:00:1c learned on MLAG peer dually connected interface serv01bond3
Sun Aug 23 2020 14:14:39 leaf12 105 leaf12: 00:02:00:00:00:1c moved from interface serv01bond3 to interface serv01bond3
Sun Aug 23 2020 14:53:31 leaf11 105 leaf11: 00:02:00:00:00:1c learned on MLAG peer dually connected interface serv01bond3
Mon Aug 24 2020 14:15:03 leaf12 105 leaf12: 00:02:00:00:00:1c learned on MLAG peer dually connected interface serv01bond3
MAC Address Flushed
In this example, the interface VlanA-1 associated with the 00:02:00:00:00:2d MAC address and VLAN 1008 is deleted, impacting leaf11 and leaf12.
cumulus@server11:~$ netq show mac-commentary 00:02:00:00:00:2d vlan 1008 between now and 5hr
Matching mac_commentary records:
Last Updated Hostname VLAN Commentary
------------------------- ---------------- ------ --------------------------------------------------------------------------------
Mon Aug 24 2020 14:14:33 leaf11 1008 leaf11: 00:02:00:00:00:2d learned/installed on vni vx-42 pointing to remote dest 27.0.0.22
Mon Aug 24 2020 14:15:03 leaf12 1008 leaf12: 00:02:00:00:00:2d learned/installed on vni vx-42 pointing to remote dest 27.0.0.22
Mon Aug 24 2020 14:16:03 leaf01 1008 leaf01: 00:02:00:00:00:2d learned on MLAG peer dually connected interface swp8
Tue Aug 25 2020 11:36:06 leaf11 1008 leaf11: 00:02:00:00:00:2d is flushed or expired
Tue Aug 25 2020 11:36:06 leaf11 1008 leaf11: 00:02:00:00:00:2d on vni 1008 remote dest changed to 27.0.0.22