HP-UX Routing Services Administrator's Guide HP-UX 11i v2, HP-UX 11i v3 (B2355-91153, November 2011)

• routerdeadinterval specifies the time interval (in seconds) for which the Hello packets
are not received from a router before it is considered down or inactive by its neighbors. This
value must be a multiple of the hellointerval value.
◦ Default: None (you must specify a value)
◦ Range: 0 – 65535
NOTE: The routerdeadinterval value must be the same for all OSPF routers.
• You can use the password authkey to validate the protocol packets received on the router
interface. The value can be 1 to 8 decimal digits separated by periods, a 1-byte to 8-byte
hexadecimal string preceded by 0x, or a string of 1 to 8 characters in double quotes.
◦ Default: None
◦ Range: Up to 8 bytes
NOTE: To set an authkey value, you must set the authtype clause to 1 or simple for
the area. See “Authentication” (page 37) for more information on using OSPF authentication.
Figure 9 shows an example of a router that is connected to a multicast network through the interface
193.2.1.35.
Figure 9 Multicast Router Interface Example
The following is an example of the multicast interface definition in the router’s /etc/gated.conf
file:
interface 193.2.1.35 cost 5 {
enable ;
priority 15 ;
hellointerval 5 ;
routerdeadinterval 20 ;
retransmitinterval 10 ;
} ;
Non-Broadcast Multi-Access (NBMA) Interface
On NBMA networks, you must supply the configuration information, including the routers that are
attached to the network, so that the OSPF’s Hello protocol communicates with neighbor routers.
An NBMA interface definition applies to both X.25 network interfaces and systems that do not
support IP multicasting. You can define an NBMA interface using the multicast interface
statements, with the following additions:
• You must specify the clause nonbroadcast in the interface statement.
• pollinterval specifies a rate at which hellos are sent when a neighboring router becomes
inactive (a router is considered inactive when hellos are not received from the router for the
amount of time specified by the routerdeadinterval definition). The value of
Configuring the OSPF Protocol 33