Foundry Networks Switch and Router User Manual

Configuring IP
December 2000 15 - 89
Displaying ARP Entries
You can display the ARP cache and the static ARP table. The ARP cache contains entries for devices attached to
the Layer 3 Switch. The static ARP table contains the user-configured ARP entries. An entry in the static ARP
table enters the ARP cache when the entry’s interface comes up.
The tables require separate display commands or Web management options.
Displaying the ARP Cache
To display the ARP cache, use one of the following methods.
USING THE CLI
To display the contents of the ARP cache, enter the following command at any CLI level:
BigIron# show arp
Total number of ARP entries: 5
IP Address MAC Address Type Age Port
1 207.95.6.102 0800.5afc.ea21 Dynamic 0 6
2 207.95.6.18 00a0.24d2.04ed Dynamic 3 6
3 207.95.6.54 00a0.24ab.cd2b Dynamic 0 6
4 207.95.6.101 0800.207c.a7fa Dynamic 0 6
5 207.95.6.211 00c0.2638.ac9c Dynamic 0 6
Syntax: show arp [ethernet <portnum> | mac-address <xxxx.xxxx.xxxx> [<mask>] | <ip-addr> [<ip-mask>]]
[<num>]
The ethernet <portnum> parameter lets you restrict the display to entries for a specific port.
The mac-address <xxxx.xxxx.xxxx> parameter lets you restrict the display to entries for a specific MAC address.
The <mask> parameter lets you specify a mask for the mac-address <xxxx.xxxx.xxxx> parameter, to display
entries for multiple MAC addresses. Specify the MAC address mask as “f”s and “0”s, where “f”s are significant
bits.
The <ip-addr> and <ip-mask> parameters let you restrict the display to entries for a specific IP address and
network mask. Specify the IP address masks in standard decimal mask format (for example, 255.255.0.0).
NOTE: The <ip-mask> parameter and <mask> parameter perform different operations. The <ip-mask>
parameter specifies the network mask for a specific IP address, whereas the <mask> parameter provides a filter
for displaying multiple MAC addresses that have specific values in common.
MTU The Maximum Transmission Unit (MTU), which specifies the
maximum packet size for packets sent and received on this interface.
Metric The cost associated with this interface.
Directed Broadcast Forward The state of the directed broadcast forwarding feature. The state can
be one of the following:
• Disable
• Enable
To change the state of this feature, see “Enabling Forwarding of
Directed Broadcasts” on page 15-35.
Table 15.10: Web Display of IP Interface Information (Continued)
This Field... Displays...

Foundry Networks Switch and Router Specifications

General

Brand	Foundry Networks
Model	Switch and Router
Category	Switch
Language	English