HP-UX Reference (11i v1 05/09) - 4 File Formats (vol 8)

g
gated.conf(4) gated.conf(4)
lcladdr local_address
Specifies the address to be used on the local end of the connection with the neighbor.
The local address must be on an interface which is shared with the neighbor or with
the gateway of the neighbor when the gateway parameter is used. A session will only
be opened when an interface with the appropriate local address (through which the
neighbor or gateway address is directly reachable) is operating.
sourcenet network
Specifies the network queried in the EGP Poll packets. By default this is the network
shared with neighbors address specified. If there is no network shared with the neigh-
bor, one of the network the neighbor is attached to should be specified. This parame-
ter can also be used to specify a network shared with the neighbor other than the one
on which the EGP packets are sent. This parameter is normally not needed.
p1 time
minhello time
Sets the minimum acceptable interval between the transmission of EGP HELLO pack-
ets. The default hello interval is 30 seconds. If the neighbor fails to respond to three
hello packets, GateD stops trying to acquire the neighbor. Setting a larger interval
gives the neighbor a better chance to respond. Minhello is an alias for the P1 value
defined in the EGP specification.
p2 time
minpoll time
Sets the time interval between polls to the neighbor. The default is 120 seconds. If
three polls are sent without a response, the neighbor is declared "down" and all routes
learned from that neighbor are removed from the routing database. A longer polling
interval supports a more stable routing database but is not as responsive to routing
changes. Minpoll is an alias for the P2 value defined in the EGP specification.
ttl ttl
By default, GateD sets the IP TTL for local neighbors to one and the TTL for non-local
neighbors to 255. This option is provided when attempting to communicate with
improperly functioning routers that ignore packets sent with a TTL of one.
traceoptions trace_options
Specifies the tracing options for this EGP neighbor. By default these are inherited
from group or EGP global trace options. (See Trace Statements and the EGP specific
tracing options below.)
Tracing options
The state and policy options work with EGP.
Packet tracing options (which may be modified with detail, send and recv):
packets
All EGP packets
hello
EGP HELLO/I-HEARD-U packets which are used to determine neighbor reachability.
acquire
EGP ACQUIRE/CEASE packets which are used to initiate and terminate EGP sessions.
update
EGP POLL/UPDATE packets which are used to request and receive reachability updates.
The BGP Protocol
The Border Gateway Protocol (BGP) is an exterior routing protocol used for exchanging routing information
between autonomous systems. BGP is used for exchange of routing information between multiple transit
autonomous systems as well as between transit and stub autonomous systems. BGP is related to EGP but
operates with more capability, greater flexibility, and less required bandwidth. BGP uses path attributes to
provide more information about each route, and in particular maintain an AS path, which includes the AS
number of each autonomous system the route has transited, providing information sufficient to prevent
routing loops in an arbitrary topology. Path attributes may also be used to distinguish between groups of
routes to determine administrative preferences, allowing greater flexibility in determining route preference
to achieve a variety of administrative ends.
Section 4−−94 Hewlett-Packard Company − 25 − HP-UX 11i Version 1: September 2005