Avaya G430, Manual

Page: 429 / 696

Root level
command
Command Description
fastethernet|
tunnel)
ip unnumbered Configure an interface to borrow an IP
address from another interface or remove an
unnumbered IP configuration from an
interface
Routing sources
The Branch Gateway router supports both static and dynamic routing per interface. You can
configure static routes with two levels of priority, high and low, and you can enable and
configure Open Shortest Path First (OSPF) and Routing Information Protocol (RIP) dynamic
routing protocols. Additionally, when DHCP client is configured on an interface, you can
configure DHCP client to request a default router address from the DHCP server (DHCP option
3).
The actual source from which the router learns the next hop for any given interface is
determined as follows: The router seeks the best match to a packet’s destination IP address
from all enabled routing sources. If there is no best match, the next hop source is determined
according to the following priority order:
1. High priority static route (highest)
If a high priority static route is configured on the interface, this route overrides all
other sources.
2. OSPF
If no high priority static route is configured on the interface, but OSPF is enabled,
then OSPF determines the next hop.
3. RIP
If no high priority static router is configured on a given interface, and OSPF is not
enabled, but RIP is enabled, RIP determines the next hop.
4. EXT OSPF
5. DHCP
If no high priority static router is configured on a given interface, and neither OSPF
nor RIP are enabled, and DHCP client is configured on the interface with a default
router requested from the DHCP server (DHCP option 3), then the default router
provided by DHCP is used.
6. Low priority static route (lowest)
The router
Administering Avaya G430 Branch Gateway October 2013 429