ARP/ND Configuration

Configuration Hierarchy

The diagram illustrates the Neighbor Timer configuration hierarchy.

Neighbor Timer Configuration Hierarchy

Configuration Syntax and Commands

Neighbor Timer Configuration

The following sections describe the interface configuration syntax and commands.

Syntax:

set global neighbor <attribute> <value>

Attribute Description

garp-interval

Gratuitous ARP interval. The value is in seconds.
Range: 1 to 1000 seconds
Default: 60

probe-interval

Neighbor probe interval. The value is in seconds.
Range: 1 to 1000 seconds
Default: 10

ra-interval

Router advertisement interval. The value is in seconds.
Range: 1 to 1000 seconds
Default: 10

scan interval

Neighbor scan interval. The value is in seconds.
Range: 1 to 1000 seconds
Default: 60

throttle-interval

ARP throttle interval. The value is in seconds.
Range: 1 to 1000 seconds
Default: 10

Example: Neighbor timer Configuration

{
    "rtbrick-config:neighbor": {
      "garp-interval": 10,
      "probe-interval": 120,
      "scan-interval": 120,
      "throttle-interval": 120,
      "ra-interval": 120
    }
  }

Static IP Neighbor Configuration

This section describes configuration options at static IP neighbors.

Syntax:

set interface <interface-name> unit <unit-id> neighbor <attribute> <value>

Attribute Description

<interface-name>

Name of the interface. Examples: ifp-0/0/1.

<unit-id>

Create a logical interface (also referred to as a sub-interface) under the physical interface.

IPv4/IPv6 <ip-address>

Neighbor IPv4 or IPv6 address.

MAC <mac-address>

Neighbor MAC address.

Example: Static IP Neighbor Configuration

supervisor@rtbrick>LEAF01: cfg> show config
{
  "data": {
    "rtbrick-config:interface": [
      {
        "name": "ifp-0/1/5",
        "unit": [
          {
            "unit-id": 1,
            "neighbor": {
              "ipv4": [
                {
                  "address4": "198.51.100.10",
                  "mac": "11:11:11:11:11:11"
                }
              ]
            }
          }
        ]
      }
    ]
  }
}

Enabling/Disabling GARP on Interface

You can enable or disable the sending of Gratuitous ARP (GARP) on an interface. This section describes enabling or disabling GARP on an interface.

Syntax:

set interface <interface-name> unit <unit-id> gratitous-arp <enable|disable>

Attribute Description

interface <interface-name>

Name of the interface. Examples: ifp-0/0/1.

gratitous-arp

Specify enable or disable.

Example: Enabling Gratitous ARP

supervisor@rtbrick.net: cfg> set interface hostif-0/0/0 unit 100 gratitous-arp enable|disable

Enabling Permanent ARP Entry on IFLs

You can enable the Permanent ARP Entry on IFLs functionality.

Syntax:

set interface <interface> unit <unit id> neighbor <*ipv4|ipv6*> <ip address> dynamic true

Attribute Description

<interface-name>

Name of the interface. Example: ifp-0/0/1.

<unit-id>

Create a logical interface (also referred to as a sub-interface) under the physical interface.

neighbor IPv4/IPv6 <ip-address>

Neighbor IPv4 or IPv6 address.

dynamic

Dynamic resolution mode.

Example: Enable Permanent ARP Entry on IFLs

{
  "ietf-restconf:data": {
    "rtbrick-config:interface": [
      {
        "name": "ifp-0/0/0",
        "host-if": "S1-1-SN",
        "unit": [
          {
            "unit-id": 10,
            "neighbor": {
              "ipv4": [
                {
                  "address4": "10.2.2.2",
                  "dynamic": "true"
                }
              ]
            }
          }
        ]
      },
      {
        "name": "ifp-0/0/1",
        "host-if": "S1-2-SN"
      },
      {
        "name": "ifp-0/0/2",
        "host-if": "S1-3-L1"
      },
      {
        "name": "ifp-0/0/3",
        "host-if": "S1-4-L1"
      }
    ]
  }
}