Lucent Technologies P550 - Manual (Page 172)

Configuring IP Routing (Layer 3)
7-46 Cajun P550/P220 Switch Operation Guide
advertisements. When a host attached to a multicast link starts up, it may multicast a
router solicitation to ask for immediate advertisements, rather than waiting for the next
periodic one to arrive.
If no advertisements arrive, the host may re-transmit the solicitation a small number of
times, but then must stop sending more solicitations. Routers that subsequently start up,
or were not discovered because of packet loss or temporary link partitioning, are
eventually discovered by reception of their periodic (unsolicited) advertisements.
Enabling IRDP on an Interface
To enable IRDP on an interface:
1. In the IP Configuration section of the Web Agent window, click IRDP. The ICMP
Router Discovery Protocol dialog box opens.
2. In the Select column, choose the interface on which to enable IRDP.
3. Use Table 7-33 to enable parameters and enter necessary Internet addresses in the
IRDP Interfaces dialog box.
Table 7-33. ICMP Router Discovery Protocol Parameters
Parameter Definition
Select Selects the interface to be configured.
Interface Displays the IRDP interface.
Network Address Displays the network IP address of the IRDP interface.
IRDP State Select to enable or disable IRDP on the selected interface.
The default is Enable.
Preferences Enter the preference of the address as a default router
address, relative to other router addresses on the same
subnet. The minimum value (80000000 hex) is used to
indicate that the address should not be used by neighboring
hosts as a default router address, even though it may be
advertised. The default is 0.
Adv. Address Select an IP destination address used for multicast router
advertisements sent from the interface.
Options include:
• Multicast - Used on any link where listening hosts
support IP multicast. The default is 224.0.0.1.
• Broadcast - Used on any link where listening hosts
support IP unicast. The default is 255.255.255.255.