User`s guide

Configuring IP Routing
Managing IP routes and connections
MultiVoice Gateway for the MAX— User’s Guide Preliminary November 23, 1998 8-23
Continuing the example, the first route shown is the loopback route:
127.0.0.1/32 - lo0 CP 0 0 0 20887
The loopback route says that packets sent to this special address will be handled internally. The
C flag indicates a Connected route, while the P flag indicates that the router will not advertise
this route.
The loopback route is followed by a connection to the Ethernet interface. It is directly
connected, with a Preference and Metric of zero.
10.1.2.0/24 - ie0 C 0 0 19775 20887
The last two routes are a private loopback route, and a private route to the broadcast address:
10.1.2.1/32 - lo0 CP 0 0 389 20887
255.255.255.255/32 - ie0 CP 0 0 0 20887
The private loopback route shown is a host route with the Ethernet address. It is private, so it
will not be advertised. The private route to the broadcast address is used in cases where the
router wants to broadcast a packet but is otherwise unconfigured with a route to the broadcast
Flg One or more of the following flag values:
• C—A directly connected route such as Ethernet
• I—ICMP Redirect dynamic route
• N—Placed in the table via SNMP MIB II
• O—A route learned from OSPF
• R—Route learned from RIP
• r—RADIUS route
• S—Static route
• ?—Route of unknown origin, which indicates an error
• G—Indirect route via a gateway
• P—Private route
• T—Temporary route
• *—Hidden route that will not be used unless another better route to
the same destination goes down
Pref Preference value of the route. Note that all routes that come from RIP have
a preference value of 100, while the preference value of each individual
static route can be set independently.
Metric RIP-style metric for the route, with a valid range of 0-16. Routes learned
from OSPF show a RIP metric of 10. OSPF Cost infinity routes show a
RIP metric of 16.
Use Count of the number of times the route was referenced since it was created.
(Many of these references are internal, so this is not a count of the number
of packets sent over this route.)
Age Age of the route in seconds. Used for troubleshooting, to determine when
routes are changing rapidly or flapping.
Column Description