Configuring Arp - Cisco 500 series Administration Manual

Configuring IP Information

Configuring ARP

STEP 4
Configuring ARP
NOTE
STEP 1
STEP 2
Cisco 500 Series Stackable Managed Switch Administration Guide
Remote
- —Indicates that the route is a remote path.
• Metric—Enter the administrative distance to the next hop. The range is 1–
255.
Click Apply. The IP Static route is written to the Running Configuration file.
The switch maintains an ARP (Address Resolution Protocol) table for all known
devices that reside in its directly-connected IP subnets. A directly-connected IP
subnet is the subnet to which an IPv4 interface of the switch is connected. When
the switch needs 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 switch creates dynamic addresses from the ARP packets it receives.
Dynamic addresses age out after a configured time.
In Layer 2 mode, the IP, MAC address mapping information in ARP Table is used by
the switch to forward the traffic originated by the switch. In Layer 3 mode, the
mapping information is used for Layer 3 routing as well as to forward the generated
traffic.
To define the ARP tables:
Click IP Configuration > ARP. The ARP Table page opens.
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.
Static
- —Deletes all of the static addresses immediately.
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