Router Nexthop
The nv unset commands remove the configuration you set with the equivalent nv set commands. This guide only describes an nv unset command if it differs from the nv set command.
nv set router nexthop group <nexthop-group-id> via <via-id>
Configures the next hop router for the next hop group.
Command Syntax
| Syntax | Description |
|---|---|
<nexthop-group-id> | The next hop group ID. |
<via-id> | The IP address of the nexthop router. |
Version History
Introduced in Cumulus Linux 5.4.0
Example
cumulus@switch:~$ nv set router nexthop group 10 via 10.0.1.0
nv set router nexthop group <nexthop-group-id> via <via-id> interface <interface-name>
Configures the next hop router and interface for the next hop group.
Command Syntax
| Syntax | Description |
|---|---|
<nexthop-group-id> | The next hop group ID. |
<via-id> | The IP address of the nexthop router. |
<interface-name> | The interface name. |
Version History
Introduced in Cumulus Linux 5.4.0
Example
cumulus@switch:~$ nv set router nexthop group 10 via 10.10.10.101 interface swp51
nv set router nexthop group <nexthop-group-id> via <via-id> vrf <vrf-name>
Configures the next hop router and VRF for the next hop group.
Command Syntax
| Syntax | Description |
|---|---|
<nexthop-group-id> | The next hop group ID. |
<via-id> | The IP address of the nexthop router. |
<vrf-name> | The VRF name. |
Version History
Introduced in Cumulus Linux 5.4.0
Example
cumulus@switch:~$ nv set router nexthop group 10 via 10.10.10.101 vrf default
nv set vrf <vrf-id> router nexthop-tracking <afi>
Configures next hop tracking for the specified address family. Next hop tracking reduces the BGP convergence time by monitoring next hop address changes in the routing table.
Command Syntax
| Syntax | Description |
|---|---|
<vrf-name> | The VRF name. |
<afi> | The address family: IPv4 or IPv6. |
Version History
Introduced in Cumulus Linux 5.4.0
Example
cumulus@switch:~$ nv set vrf default router nexthop-tracking ipv4
nv set vrf <vrf-id> router nexthop-tracking <afi> resolved-via-default
Turns nexthop tracking resolved via default on or off.
Command Syntax
| Syntax | Description |
|---|---|
<vrf-name> | The VRF name. |
<afi> | The address family: IPv4 or IPv6. |
Version History
Introduced in Cumulus Linux 5.4.0
Example
cumulus@switch:~$ nv set vrf default router nexthop-tracking ipv4 resolved-via-default on
nv set vrf <vrf-id> router nexthop-tracking <afi> route-map <nht-routemap-id>
Applies the specified nexthop tracking route map.
Command Syntax
| Syntax | Description |
|---|---|
<vrf-name> | The VRF name. |
<afi> | The address family: IPv4 or IPv6. |
<nht-routemap-id> | The next hop tracking route map name. |
Version History
Introduced in Cumulus Linux 5.4.0
Example
cumulus@switch:~$ nv set vrf default router nexthop-tracking ipv4 route-map ROUTEMAP1
nv set vrf <vrf-id> router nexthop-tracking <afi> route-map <nht-routemap-id> protocol <protocol-id>
Applies the specified nexthop tracking route map for the specified protocol. You can specify bgp, ospf, ospf6, or static.
Command Syntax
| Syntax | Description |
|---|---|
<vrf-name> | The VRF name. |
<afi> | The address family: IPv4 or IPv6. |
<nht-routemap-id> | The next hop tracking route map name. |
<protocol-id> | The protocol: bgp, ospf, ospf6, or static. |
Version History
Introduced in Cumulus Linux 5.4.0
Example
cumulus@switch:~$ nv set vrf default router nexthop-tracking ipv4 route-map ROUTEMAP1 bgp