Configuring IP
December 2000 15 - 13
Origination of
default routes
You can enable a router to originate default routes for
the following route exchange protocols, on an
individual protocol basis:
• RIP
• OSPF
• BGP4
Disabled 16-10
17-34
19-32
Default route
aggregation
Optimizes forwarding cache space by aggregating
cache entries for destinations to which the router
forwards traffic using a default route. When you
enable default route aggregation, the router makes a
single cache entry for a destination network instead of
multiple entries for the hosts on the network.
Separate cache entry
for each destination
host
15-64
Default network
route
The router uses the default network route if the IP
route table does not contain a route to the destination
and also does not contain an explicit default route
(0.0.0.0 0.0.0.0 or 0.0.0.0/0).
None configured 15-49
Static route An IP route you place in the IP route table. No entries 15-39
Source interface The IP address the router uses as the source address
for Telnet, RADIUS, or TACACS/TACACS+ packets
originated by the router. The router can select the
source address based on either of the following:
• The lowest-numbered IP address on the
interface the packet is sent on.
• The lowest-numbered IP address on a specific
interface. The address is used as the source for
all packets of the specified type regardless of
interface the packet is sent on.
The lowest-numbered
IP address on the
interface the packet is
sent on.
15-27
Table 15.1: IP Global Parameters – Layer 3 Switches (Continued)
Parameter Description Default See page...
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