CLI Reference Guide-R07

Chapter 27 | IP Interface Commands
IPv4 Interface
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clear arp-cache This command deletes all dynamic entries from the Address Resolution Protocol
(ARP) cache.
Command Mode
Privileged Exec
Command Mode
The command only deletes dynamic entries in the ARP cache.
The maximum number of dynamic ARP cache entries is 48.
Example
This example clears all dynamic entries in the ARP cache.
Console#clear arp-cache
This operation will delete all the dynamic entries in ARP Cache.
Do you want to continue this operation (y/n)?
Console#
show arp This command displays entries in the Address Resolution Protocol (ARP) cache.
Command Mode
Normal Exec, Privileged Exec
Command Usage
◆ This command displays information about the ARP cache. It also shows each
cache entry, including the IP address, MAC address, type (static, dynamic,
other), and VLAN interface. Note that entry type “other” indicates local
addresses for this router.
◆ Static entries are only displayed for VLANs that are up. In other words, static
entries are only displayed when configured for the IP subnet of a existing VLAN,
and that VLAN is linked up.
◆ The maximum number of ARP entries is 64; which is limited to 8 static entries,
48 dynamic entries and 8 entries that are reserved for VLAN interfaces. For the
ECS2100-10T switch model, the table is shared with IPV6 ND, which may limit
the total available entries for ARP.
Example
This example displays all entries in the ARP cache.
Console#show arp
IP Address MAC Address Type Interface
--------------- ----------------- --------- -----------
192.168.1.1 00-11-3B-11-22-33 other VLAN1
192.168.1.2 00-E0-4C-68-14-79 dynamic VLAN1