Patton electronic SmartNode 4110 Series manual Displaying dynamic ARP entries

SmartWare Software Configuration Guide 10 • IP interface configuration

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Context:	router
Name:	wan
IP Address:	172.17.100.210 255.255.255.0
MTU:	1500
ICMP router-discovery:	enabled
ICMP redirect:	send only
State:	CLOSED
Binding:	ethernet 0 0 1/ethernet/ip
…

Displaying dynamic ARP entries

The following command can be used to display the dynamically learned ARP entries on an IP interface or on the entire system.

Step	Command	Purpose
1	[name]#show arp [<ip-if-name>]	Display the ARP entries for the specified or all IP interfaces.

Flushing dynamic ARP entries

The following command can be used to flush the dynamically learned ARP entries on an IP interface or on the entire system.

Step	Command	Purpose
1	[name]#arp flush[<ip-if-name>]	Flushes the ARP entries for the specified or all IP interfaces.

Processing gratuitous ARP requests

The following command can be used to accept and process gratuitous ARP requests and replies. ARP requests and replies in which the target protocol address and sender protocol address are the same are considered. Because of security reasons, this feature is deactivated as default and must be enabled by the user.

Mode: configure

Step Command Purpose

1[name](cfg)#[no] arp gratuitous Enables or disables the processing of gratuitous arp requests and replies.

Testing connections with the ping command

As an aid to diagnosing basic network connectivity, many network protocols support an echo protocol. The protocol involves sending a special datagram to the destination host, then waiting for a reply datagram from that host. Results from this echo protocol can help in evaluating the path-to-host reliability, delays over the path, and whether the host can be accessed or is functioning.

IP interface configuration task list 127