Black Box LGB6026A, Руководство по управлению

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C
HAPTER
47 | IP Routing Commands
Routing Information Protocol (RIP)
possibility of routing loops For example, this can occur if there are
multiple redistribution points and the router learns about the same
external network with a better metric from a redistribution point other
than that derived from the original source.
E
XAMPLE
This example sets the default metric to 5.
Console(config-router)#default-metric 5
Console(config-router)#
R
ELATED
C
OMMANDS
redistribute (1124)
distance
This command defines an administrative distance for external routes
learned from other routing protocols. Use the no form to restore the
default setting.
S
YNTAX
[ no ] distance distance network-address netmask [ acl-name ]
distance - Administrative distance for external routes. External
routes are routes for which the best path is learned from a neighbor
external to the local RIP autonomous system. Routes with a
distance of 255 are not installed in the routing table.
(Range: 1-255)
network-address - IP address of a route entry.
netmask - Network mask for the route. This mask identifies the
network address bits used for the associated routing entries.
acl-name - Name of the access control list. Any type of ACL can be
specified, including standard or extended IP ACLs and MAC ACLs.
(Range: 1-16 characters)
D
EFAULT
S
ETTING
None
C
OMMAND
M
ODE
Router Configuration
C
OMMAND
U
SAGE
◆
Administrative distance is used by the routers to select the preferred
path when there are two or more different routes to the same
destination from two different routing protocols. A smaller
administrative distance indicates a more reliable protocol.
◆
An access list can be used to filter networks according to the IP address
of the router supplying the routing information. For example, to filter