Avaya 4524GT Configuration Manual page 36

System configuration fundamentals
IPv4 neighbor function
ARP Reply message
ARP cache
Gratuitous ARP
Router solicitation message
(optional)
Router advertisement
message (optional)
36 Configuration — System
IPv6 neighbor function
Neighbor advertisement
Neighbor cache
Duplicate address detection
Router solicitation (required) The host sends this message
Router advertisement
(required)
Description
verify that a neighbor is still
reachable through a cached
link-layer address. You can
also use neighbor
solicitations for duplicate
address detection.
A node sends this message
either in response to a
received neighbor
solicitation message or to
communicate a link layer
address change.
The neighbor cache contains
information about neighbor
types on the network.
A host or node sends a
request with its own IP
address to determine if
another router or host uses
the same address. The
source receives a reply from
the duplicate device. Both
hosts and routers use this
function.
upon detecting a change in a
network interface operational
state. The message requests
that routers generate router
advertisement immediately
rather than at the scheduled
time.
Routers send this message
to advertise their presence
together with various links
and Internet parameters
either periodically or in
response to a router
solicitation message. Router
advertisements contain
prefixes that you use for on-
link determination or address
configuration, and a
suggested hop limit value.
April 2011