IP Configuration
IPv4 Management and Interfaces
Cisco 500 Series Stackable Managed Switch Administration Guide Release 1.3 292
17
RIPv2
See IP Configuration: RIPv2.
Access List
See Access Lists.
IPv4 VRRP Virtual Routers
See IP Configuration: IPv4 VRRP Virtual Routers
ARP
The device maintains an ARP (Address Resolution Protocol) table for all known
devices that reside in the IP subnets directly connected to it. A directly-connected
IP subnet is the subnet to which an IPv4 interface of the device is connected.
When the device is required to send/route a packet to a local device, it searches
the ARP table to obtain the MAC address of the device. The ARP table contains
both static and dynamic addresses. Static addresses are manually configured and
do not age out. The device creates dynamic addresses from the ARP packets it
receives. Dynamic addresses age out after a configured time.
NOTE In Layer 2 mode, the IP, MAC address mapping in ARP Table is used by the device
to forward traffic originated by the device. In Layer 3 mode, the mapping
information is used for Layer 3 routing as well as to forward generated traffic.
To define the ARP tables:
STEP 1 Click IP Configuration > IPv4 Management and Interfaces > ARP.
STEP 2 Enter the parameters.
• ARP Entry Age Out—Enter the number of seconds that dynamic addresses
can remain in the ARP table. A dynamic address ages out after the time it is
in the table exceeds the ARP Entry Age Out time. When a dynamic address
ages out, it is deleted from the table, and only returns when it is relearned.
• Clear ARP Table Entries—Select the type of ARP entries to be cleared from
the system.
-
All
—Deletes all of the static and dynamic addresses immediately.
-
Dynamic
—Deletes all of the dynamic addresses immediately.
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