IP Interface Parameters

The following table lists the interface-level IP parameters, their default values, and where to find configuration information.

Table 1. IP interface parameters

Parameter

Description

Default

IP state

The Internet Protocol, version 4

Enabled

Note: You cannot disable IP.

IP address

A Layer 3 network interface address

The SLX-OS device has separate IP addresses on individual interfaces.

None configured

Encapsulation type

The format of the packets in which the device encapsulates IP datagrams.

Ethernet

IP Maximum Transmission Unit (MTU)

The maximum length (number of bytes) of an encapsulated IP datagram that the device can forward.

1500 for Ethernet II encapsulated packets

ARP age

Locally overrides the global setting. See IP Global Parameters.

25 minutes

Directed broadcast forwarding

Locally overrides the global setting. See IP Global Parameters.

Disabled

ICMP Redirect messages

Locally overrides the global setting. See IP Global Parameters.

Enabled

UDP broadcast forwarding

The device can forward UDP broadcast packets for UDP applications such as BootP. By forwarding the UDP broadcasts, the device enables clients on one subnet to find servers attached to other subnets.

Note: To enable a client‘s UDP application request to find a server on another subnet,configure an IP helper address.

The device helps forward broadcasts for the following UDP application protocols:
  • bootps
  • dns
  • netbios-dgm
  • netbios-ns
  • tacacs
  • tftp
  • time

IP helper address

The IP address of a UDP application server (such as a BootP or DHCP server) or a directed broadcast address. IP helper addresses allow the device to forward requests for certain UDP applications from a client on one subnet to a server on another subnet.

None configured