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IP Routing Features
Overview of IP Routing
IP Route Exchange Protocols
HP Procurve Series 5300XL Switches support the following IP route exchange
protocols:
Routing Information Protocol (RIP)
Open Shortest Path First (OSPF)
These protocols provide routes to the IP route table. You can use one or more
of these protocols, in any combination. The protocols are disabled by default.
For configuration information, see the following:
“Configuring RIP” on page 16-20
“Configuring OSPF” on page 16-33
IP Global Parameters for Routing Switches
The following table lists the IP global parameters and the page where you can
find more information about each parameter.
Table 16-1. IP Global Parameters for Routing Switches
Parameter Description Default See page
Router ID The value that routers use to identify themselves to other
routers when exchanging route information. OSPF uses the
router ID to identify routers. RIP does not use the router ID.
The lowest-numbered IP
address configured on
the lowest-numbered
routing interface.
16-9
Address
Resolution
Protocol (ARP)
A standard IP mechanism that routers use to learn the
Media Access Control (MAC) address of a device on the
network. The router sends the IP address of a device in
the ARP request and receives the device’s MAC address
in an ARP reply.
Enabled 16-10
ARP age The amount of time the device keeps a MAC address
learned through ARP in the device’s ARP cache. The
device resets the timer to zero each time the ARP entry is
refreshed and removes the entry if the timer reaches the
ARP age.
Five minutes not
configur-
able
Proxy ARP An IP mechanism a router can use to answer an ARP
request on behalf of a host, by replying with the router’s
own MAC address instead of the host’s.
Disabled 16-12
Time to Live
(TTL)
The maximum number of routers (hops) through which a
packet can pass before being discarded. Each router
decreases a packet’s TTL by 1 before forwarding the
packet. If decreasing the TTL causes the TTL to be 0, the
router drops the packet instead of forwarding it.
64 hops 7-11
16-6