Configuring Arp - Cisco SF500-24 Administration Manual

Configuring IP Information

Configuring ARP

STEP 4
Configuring ARP
NOTE
Cisco 500 Series Stackable Managed Switch Administration Guide
• Next Hop Router IP Address—Enter the next hop IP address or IP alias on
the route.
You cannot configure a static route through a directly-connected IP
NOTE
subnet where the switch gets its IP address from a DHCP server.
• Route Type—Select the route type.
Reject
- —Rejects the route and stops routing to the destination network
via all gateways. This ensures that if a frame arrives with the destination
IP of this route, it is dropped.
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.
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