Specifications

Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
How to Configure EtherSwitch HWICs
97
2. configure terminal
3. no monitor session session-id
4. end
DETAILED STEPS
Managing the ARP Table
To communicate with a device (on Ethernet, for example), the software first must determine the 48-bit
MAC or local data link address of that device. The process of determining the local data link address
from an IP address is called address resolution.
The Address Resolution Protocol (ARP) associates a host IP address with the corresponding media or
MAC addresses and VLAN ID. Taking an IP address as input, ARP determines the associated MAC
address. Once a MAC address is determined, the IP-MAC address association is stored in an ARP cache
for rapid retrieval. Then the IP datagram is encapsulated in a link-layer frame and sent over the network.
Encapsulation of IP datagrams and ARP requests and replies on IEEE 802 networks other than Ethernet
is specified by the Subnetwork Access Protocol (SNAP). By default, standard Ethernet-style ARP
encapsulation (represented by the arpa keyword) is enabled on the IP interface.
When you manually add entries to the ARP table by using the CLI, you must be aware that these entries
do not age and must be manually removed.
Managing the MAC Address Tables
This section describes how to manage the MAC address tables on the HWICs. The following topics are
included:
• Understanding MAC Addresses and VLANs, page 98
• Changing the Address Aging Time, page 98
Command Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
no monitor session session-id
Example:
Router(config)# no monitor session 37
Disables port monitoring for a specific session.
Step 4
end
Example:
Router(config)# end
Returns to privileged EXEC mode.