Routing Information Sharing
As different routing protocols use different algorithms to calculate routes, they may discover different
routes. In a large network with multiple routing protocols, it is required for routing protocols to share their
routing information. Each routing protocol shares routing information discovered by other routing
protocols through a route redistribution mechanism.
Displaying and Maintaining a Routing Table
To do…
Use the command…
Remarks
Display brief information about
a routing table
display ip routing-table
[
|
{
begin |
exclude | include
}
regular-expression
]
Display detailed information
about a routing table
display ip routing-table verbose
Display information about
routes permitted by a basic
ACL
display ip routing-table acl
acl-number
[
verbose
]
Display information about
routes permitted by a prefix list
display ip routing-table ip-prefix
ip-prefix-name
[
verbose
]
Display routes to a specified
destination
display ip routing-table
ip-address
[
mask |
mask-length
] [
longer-match
] [
verbose
]
Display routes to specified
destinations
display ip routing-table
ip-address1
{
mask1 |
mask-length1
}
ip-address2
{
mask2 | mask-length2
} [
verbose
]
Display routes discovered by a
routing protocol
display ip routing-table
protocol protocol
[
inactive
|
verbose
]
Display the tree-structured
routing table information
display ip routing-table radix
Display statistics about a
routing table
display ip routing-table statistics
Available in any
view
Clear statistics about a routing
table
reset ip routing-table statistics protocol
{
all
|
protocol
}
Available in user
view
21-5
