3Com 9000 manual Managing LAN Emulation

294CHAPTER 9: MANAGING LAN EMULATION

Display LE_ARP Display the additional policy for handling LE_ARP requests for a specified Response Policy for ELAN when the LAN destination is a route descriptor (Token Ring ELAN).

Route Descriptor This policy is used in conjunction with the LE_ARP response policy. (For more information, see “Display LE_ARP Response Policy” on page 291.) The policy is applicable only when the “Respond” option is selected in that policy. (See Table 43.)

When the Respond policy is selected, the address table of the LES in the CoreBuilder 9000 ATM Enterprise Switch is searched for the LAN destination. If the LAN destination is not found and is a Route Descriptor, this policy gives the you the option of rejecting the LE_ARP request. You can select between the options:

￿Reject the LE_ARP request

Forward the LE_ARP request to all LECs in accordance with the LE_ARP response policy

All route descriptors are required by the LANE specification to be registered at the LES. (No proxy LECs are allowed for route descriptors.) This command essentially handles those cases for which the LAN destination exists but was not registered at the LES – in contradiction to the LANE specification.