Paradyne 9126-II, CSU, DSU, 9128-II manual IP Routing, Address Resolution Protocol, Proxy ARP

5. Configuring the FrameSaver SLV Router

IP Routing

he router uses destination-based routing. IP routing tables are maintained for both the customer data and management data domains to specify how IP datagrams are forwarded. The router can support up to 32 entries in the data IP routing table, and up to 300 entries for the management IP routing table. When an IP address and subnet mask are assigned to an interface, an entry is automatically created in the IP routing table.

Address Resolution Protocol

he router supports Address Resolution Protocol (ARP), as specified in RFC 826. he router provides for 256 ARP table entries. The timeout for completed and

uncompleted ARP table entries is configurable.

he Command Line Interface provides the ability to:

Create up to 64 static ARP table entries to be retained across power cycles.

Display the ARP table.

TDelete ARP table entries.

Display and delete automatically added static ARP table entries by the DHCP server and relay functions. Refer to Dynamic Host Configuration Protocol Server on page 5-11.

Proxy ARP

The router supports Proxy ARP. Proxy ARP responses are based on the contents of the IP routing table for management traffic. The IP routing table for management traffic must have an entry for every host that is reachable on the Ethernet interface, including hosts for which the router will not forward packets because of IP filters.

For additional information on filtering, refer to IP Filtering on page 5-15.

If an ARP request is received on one interface for an IP address that is reachable on the other interface, the router will respond with its own MAC address. Proxy ARP is enabled via the user interface. Refer to Configuring Ethernet Management in Chapter 4, Configuration Options.

Proxy ARP and NAPT cannot be enabled at the same time.

9128-A2-GB20-80 September 2002 5-3