Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 496)

Prefix Next Hop MED LocPrf Weight Status
1 10.3.0.0/8 192.168.4.106 100 0 BE
AS_PATH: 65001 4355 701 80
2 10.4.0.0/8 192.168.4.106 100 0 BE
AS_PATH: 65001 4355 1
3 10.60.212.0/22 192.168.4.106 100 0 BE
AS_PATH: 65001 4355 701 1 189
4 10.6.0.0/8 192.168.4.106 100 0 BE
AS_PATH: 65001 4355 3356 7170 1455
5 10.2.0.0/16 192.168.4.106 100 0 BE
AS_PATH: 65001 4355 701
Syntax: show ip bgp routes best
Displaying the best BGP4 routes that are not in the IP route table
When the device has multiple routes to a destination from different sources (such as BGP4, OSPF,
RIP, or static routes), the device selects the route with the lowest administrative distance as the best
route, and installs that route in the IP route table.
To display the BGP4 routes that are the "best" routes to their destinations but are not installed in the
device IP route table, enter a command such as the following at any level of the CLI.
device#show ip bgp routes not-installed-best
Searching for matching routes, use ^C to quit...
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED
E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH m:NOT-INSTALLED-MULTIPATH
S:SUPPRESSED F:FILTERED s:STALE
Prefix Next Hop Metric LocPrf Weight Status
1 192.168.4.0/24 192.168.4.106 0 100 0 bE
AS_PATH: 65001
Each of the displayed routes is a valid path to its destination, but the device received another path
from a different source (such as OSPF, RIP, or a static route) that has a lower administrative distance.
The device always selects the path with the lowest administrative distance to install in the IP route
table.
Notice that the route status in this example is the new status, "b".
Syntax: show ip bgp routes not-installed-best
NOTE
To display the routes that the device has selected as the best routes and installed in the IP route table,
display the IP route table using the show ip route command.
Displaying BGP4 routes whose destinations are unreachable
To display BGP4 routes whose destinations are unreachable using any of the BGP4 paths in the
BGP4 route table, enter a command such as the following at any level of the CLI.
device# show ip bgp routes unreachable
Searching for matching routes, use ^C to quit...
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED
E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH m:NOT-INSTALLED-MULTIPATH
S:SUPPRESSED F:FILTERED s:STALE
Prefix Next Hop Metric LocPrf Weight Status
1 10.8.8.0/24 192.168.5.1 0 101 0
AS_PATH: 65001 4355 1
Syntax: show ip bgp routes unreachable
Displaying the best BGP4 routes that are not in the IP route table
496 FastIron Ethernet Switch Layer 3 Routing Configuration Guide
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