ARP
nv show interface neighbor
Shows all the entries in the IP neighbor table.
Version History
Introduced in Cumulus Linux 5.7.0
Example
cumulus@switch:~$ nv show interface neighbor
Interface IP/IPV6 LLADR(MAC) State Flag
------------- ------------------------- ----------------- --------- ----------
eth0 192.168.200.251 48:b0:2d:00:00:01 stale
192.168.200.1 48:b0:2d:aa:8b:45 reachable
fe80::4ab0:2dff:fe00:1 48:b0:2d:00:00:01 reachable router
peerlink.4094 169.254.0.1 48:b0:2d:3f:69:d6 permanent
fe80::4ab0:2dff:fe3f:69d6 48:b0:2d:3f:69:d6 reachable router
swp51 169.254.0.1 48:b0:2d:a2:4c:79 permanent
fe80::4ab0:2dff:fea2:4c79 48:b0:2d:a2:4c:79 reachable router
swp52 169.254.0.1 48:b0:2d:48:f1:ae permanent
fe80::4ab0:2dff:fe48:f1ae 48:b0:2d:48:f1:ae reachable router
swp53 169.254.0.1 48:b0:2d:2d:de:93 permanent
fe80::4ab0:2dff:fe2d:de93 48:b0:2d:2d:de:93 reachable router
swp54 169.254.0.1 48:b0:2d:80:8c:21 permanent
fe80::4ab0:2dff:fe80:8c21 48:b0:2d:80:8c:21 reachable router
vlan10 10.1.10.3 44:38:39:22:01:78 permanent
10.1.10.101 48:b0:2d:a1:3f:4b reachable
10.1.10.104 48:b0:2d:1d:d7:e8 noarp |ext_learn
fe80::4ab0:2dff:fea1:3f4b 48:b0:2d:a1:3f:4b reachable
fe80::4ab0:2dff:fe1d:d7e8 48:b0:2d:1d:d7:e8 noarp |ext_learn
fe80::4638:39ff:fe22:178 44:38:39:22:01:78 permanent
...
nv show interface <interface-id> neighbor ipv4
Shows all the entries in the ARP table for the specified interface.
Command Syntax
| Syntax | Description |
|---|---|
<interface-id> | The interface name. |
Version History
Introduced in Cumulus Linux 5.7.0
Example
cumulus@switch:~$ nv show interface swp51 neighbor ipv4
IPV4 LLADR(MAC) State Flag
----------- ----------------- --------- ----
169.254.0.1 48:b0:2d:2b:5b:b9 permanent
nv show interface <interface-id> neighbor ipv4 <neighbor-id>
Shows table entries for an interface with a specific IPv4 address.
Command Syntax
| Syntax | Description |
|---|---|
<interface-id> | The interface. |
<neighbor-id> | The IPv4 address of the neighbor. |
Version History
Introduced in Cumulus Linux 5.7.0
Example
cumulus@switch:~$ nv show interface swp51 neighbor ipv4 169.254.0.1
lladdr
=========
LLADR(MAC) State Flag
----------------- --------- ----
48:b0:2d:2b:5b:b9 permanent
nv show interface <interface-id> neighbor ipv4 <neighbor-id> lladdr <lladdr-id> flag
Shows the flag set for the neighbor in the ARP table for the specified interface and associated MAC address.
Command Syntax
| Syntax | Description |
|---|---|
<interface-id> | The interface name. |
<neighbor-id> | The IPv4 address of the neighbor. |
<lladdr-id> | The MAC address associated with IPv4 address. |
Version History
Introduced in Cumulus Linux 5.7.0
Example
cumulus@switch:~$ nv show interface swp51 neighbor ipv4 169.254.0.1 lladdr 48:b0:2d:2b:5b:b9 flag
operational applied
----------- ---------
is-router is-router
nv show interface <interface-id> neighbor ipv4 <neighbor-id> lladdr <lladdr-id> state
Shows the state of the neighbor in the ARP table for the specified interface and associated MAC address.
Command Syntax
| Syntax | Description |
|---|---|
<interface-id> | The interface name. |
<neighbor-id> | The IPv4 address of the neighbor. |
<lladdr-id> | The MAC address associated with IPv4 address. |
Version History
Introduced in Cumulus Linux 5.7.0
Example
cumulus@switch:~$ nv show interface swp51 neighbor ipv4 169.254.0.1 lladdr 48:b0:2d:2b:5b:b9 state
operational applied
----------- ---------
permanent permanent
nv show system global arp
Shows ARP settings, such as the neighbor base reachable timer and garbage collection settings.
Version History
Introduced in Cumulus Linux 5.6.0
Example
cumulus@switch:~$ nv show system global arp
operational applied
---------------------------- ----------- -------
base-reachable-time 50 50
garbage-collection-threshold
effective 35840
maximum 40960
minimum 128
nv show system global arp garbage-collection-threshold
Shows the ARP garbage collection threshold settings.
Version History
Introduced in Cumulus Linux 5.6.0
Example
cumulus@switch:~$ nv show system global arp garbage-collection-threshold
operational applied
--------- ----------- -------
effective 35840
maximum 40960
minimum 128