Cisco Systems OL-4580-01 manual Showing ARP Information

Chapter 4 Configuring the Address Resolution Protocol

Showing ARP Information

Showing ARP Information

Use the show arp command to display ARP information. To show static ARP mapping when you use the show arp command, the IP route must exist in the routing table.

The syntax for this global configuration mode command is:

show arp {configfilemanagement-portsummaryip_or_host}

The syntax and options for the command are as follows:

•show arp - Displays the complete ARP resolution table with IP addresses, MAC addresses, and resolution type, excluding entries from the CSS Ethernet management port.

•config - Displays ARP global configuration parameters. The screen displays the response timeout and the flush timeout, in seconds.

•file - Displays the hosts that are reachable using ARP. The screen displays the IP addresses of the host systems.

•management-port- Displays the ARP entries from the CSS Ethernet management port. The ARP resolution table displayed through the show arp command displays these entries.

Note The CSS Ethernet management port IP address appears as an entry in the Management Port ARP cache. This is normal CSS behavior.

•summary - Displays the total number of static entries, total number of dynamic entries, and total number of entries in the ARP resolution table, excluding the entries from the CSS management port.

•ip_or host - The IP address for the system to display its resolution. Enter the address in dotted-decimal format (for example, 192.168.11.1) or mnemonic host-name format (for example, myname.mydomain.com). You cannot enter an ARP entry derived from the CSS Ethernet management port.

For example, to display the complete ARP resolution table, enter:

#show arp

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