3. Configuring the DSL Router
Operating mode (Standard or VNET) can be changed without reconfiguration of the router. Static ARP entries can be configured, regardless of the current operating mode. If static ARP entries are configured, they remain in the database and can be displayed using the show arp CLI command.
Using CLI commands, you can:
Create up to 64 static ARP Table entries.
Display the ARP Table.
Delete ARP Table entries.
Display and delete automatically added ARP Table entries made by the DHCP server and relay functions. Refer to Dynamic Host Configuration Protocol (DHCP) Server on page
Proxy ARP
The DSL router supports Proxy ARP. Proxy ARP responses are based on the contents of the IP Routing Table for service domain traffic. The table must have entry information that indicates what hosts can be reached on the Ethernet interface, including hosts for which the router will not forward packets because of IP filters. For additional information on filtering, see IP Protocol Type Filtering on page
Proxy ARP is not available on the DSL interface when the router is configured to support RFC 1483 PDU routing. See Routed vs. Bridged PDUs on page
If an ARP request is received on one interface, and the requested IP address can be reached on the other interface, the router responds with its own MAC address.
Using CLI commands, you can enable and disable Proxy ARP for each interface.
NOTES:
—When Basic NAT is enabled, the DSL interface (dsl1) must have Proxy ARP enabled when the dsl1 interface address is part of the Basic NAT global IP network address.
—Proxy ARP is not available on the DSL interface when PPPoE is enabled for the ReachDSL Router.
—When IP Passthrough is enabled, the Ethernet interface (eth1) must have Proxy ARP enabled.
November 2003 |
