HP-UX Reference (11i v2 04/09) - 4 File Formats (vol 8)

g
gated.conf(4) gated.conf(4)
hellointerval time
The length of time, in seconds, between Hello packets that the router sends on the
interface.
routerdeadinterval time
The number of seconds not hearing Hello packets of a router before the neighbors of
the router will declare it down.
authkey auth_key
Used by OSPF authentication to generate and verify the authentication field in the
OSPF header. The authentication key can be configured on a per interface basis. It
is specified by one to eight decimal digits separated by periods, a one to eight byte
hexadecimal string preceded by 0x, or a one to eight character string in double
quotes.
Point-to-point interfaces also support this additional parameter:
nomulticast
By default, OSPF packets to neighbors on point-to-point interfaces are sent via the
IP multicast mechanism. Although, some implementations of IP multicasting for
Unix have a bug that precludes the use of IP multicasting on these interfaces. Gated
will detect this condition and fall back to using sending unicast OSPF packets to
this point-to-point neighbor.
If the use of IP multicasting is not desired because the remote neighbor does not
support it, the nomulticast parameter may be specified to force the use of unicast
OSPF packets. This option may also be used to eliminate warnings when Gated
detects the bug mentioned above.
interface interface_list nonbroadcast [cost cost ]
This form of the interface clause is used to specify a nonbroadcast interface on a non-
broadcast multiaccess (NBMA) media. Since an OSPF broadcast media must support
IP multicasting, a broadcast capable media, such as Ethernet, that does not support IP multi-
casting must be configured as a nonbroadcast interface.
A nonbroadcast interface supports any of the standard interface clauses listed above, plus
the following two that are specific to nonbroadcast interfaces:
pollinterval time
Before adjacency is established with a neighbor, OSPF packets are sent periodically
at the specified pollinterval .
routers
By definition it is not possible to send broadcast packets to discover OSPF neighbors
on a nonbroadcast, so all neighbors must be configured. The list includes one or
more neighbors and an indication of their eligibility to become a designated router.
virtuallink neighborid router_id transitarea area
Virtual links are used to establish or increase connectivity of the backbone area. The neigh-
borid is the router_id of the other end of the virtual link. The transit area specified must
also configured on this system. All standard interface parameters defined by the interface
clause above may be specified on a virtual link.
Tracing options
In addition to the following OSPF specific trace flags, OSPF supports the state which traces interface
and neighbor state machine transitions.
lsabuild
Link State Advertisement creation
spf Shortest Path First (SPF) calculations
Packet tracing options (which may be modified with detail, send and recv):
hello
OSPF HELLO packets which are used to determine neighbor reachability.
dd OSPF Database Description packets which are used in synchronizing OSPF databases.
Section 4−−98 Hewlett-Packard Company − 22 − HP-UX 11i Version 2: September 2004