![background image](http://html.mh-extra.com/html/foundry-networks/switch-and-router/switch-and-router_installation-and-configuration-manual_2324275791.webp)
Configuring BGP4
December 2000
19 - 109
Displaying the Best BGP4 Routes
To display all the BGP4 routes in the Layer 3 Switch’s BGP4 route table that are the best routes to their
destinations, enter a command such as the following at any level of the CLI:
BigIron(config-bgp-router)# show ip bgp routes best
Searching for matching routes, use ^C to quit...
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED
H:HISTORY I:IBGP L:LOCAL M:MULTIPATH S:SUPPRESSED
Network
ML Next Hop
Metric
LocPrf
Weight Status
1
4.2.42.0
24 192.168.4.211
101
0
B
2
4.2.43.0
24 192.168.4.211
101
0
B
3
7.7.7.0
24 192.168.4.211
0
101
0
b
4
38.38.38.0
24 192.168.4.211
0
101
0
B
13
102.0.0.0
24 200.1.1.10
12
101
32768 BL
Syntax:
show ip bgp routes best
For information about the fields in this display, see Table 19.9 on page 19-110. The fields in this display also
appear in the
show ip bgp
display.
Displaying Those Best BGP4 Routes that Are Nonetheless Not in the IP Route Table
When the Layer 3 Switch has multiple routes to a destination from different sources (such as BGP4, OSPF, RIP, or
static routes), the Layer 3 Switch 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 are the “best” routes to their destinations but are not installed in the Layer 3 Switch’s
IP route table, enter a command such as the following at any level of the CLI:
BigIron(config-bgp-router)# 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
H:HISTORY I:IBGP L:LOCAL M:MULTIPATH S:SUPPRESSED
Network
ML Next Hop
Metric
LocPrf
Weight Status
1
7.7.7.0
24 192.168.4.211
0
101
0
b
Each of the displayed routes is a valid path to its destination, but the Layer 3 Switch received another path from a
different source (such as OSPF, RIP, or a static route) that has a lower administrative distance. The Layer 3
Switch 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”. See Table 19.9 on page 19-110 for a
description.
Syntax:
show ip bgp routes not-installed-best
For information about the fields in this display, see Table 19.9 on page 19-110. The fields in this display also
appear in the
show ip bgp
display.
NOTE:
To display the routes that the Layer 3 Switch 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:
BigIron(config-bgp-router)# 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
H:HISTORY I:IBGP L:LOCAL M:MULTIPATH S:SUPPRESSED
Network
ML Next Hop
Metric
LocPrf
Weight Status
1
8.8.8.0
24 192.168.5.1
0
101
0
Syntax:
show ip bgp routes unreachable
Summary of Contents for Switch and Router
Page 2: ...December 2000 Copyright 2000 by Foundry Networks Inc ...
Page 26: ...Foundry Switch and Router Installation and Configuration Guide xxvi December 2000 ...
Page 64: ...Foundry Switch and Router Installation and Configuration Guide 2 34 December 2000 ...
Page 162: ...Foundry Switch and Router Installation and Configuration Guide 5 38 December 2000 ...
Page 196: ...Foundry Switch and Router Installation and Configuration Guide 6 34 December 2000 ...
Page 208: ...Foundry Switch and Router Installation and Configuration Guide 7 12 December 2000 ...
Page 236: ...Foundry Switch and Router Installation and Configuration Guide 8 28 December 2000 ...
Page 258: ...Foundry Switch and Router Installation and Configuration Guide 9 22 December 2000 ...
Page 420: ...Foundry Switch and Router Installation and Configuration Guide 13 32 December 2000 ...
Page 442: ...Foundry Switch and Router Installation and Configuration Guide 14 22 December 2000 ...
Page 554: ...Foundry Switch and Router Installation and Configuration Guide 15 112 December 2000 ...
Page 574: ...Foundry Switch and Router Installation and Configuration Guide 16 20 December 2000 ...
Page 626: ...Foundry Switch and Router Installation and Configuration Guide 17 52 December 2000 ...
Page 682: ...Foundry Switch and Router Installation and Configuration Guide 18 56 December 2000 ...
Page 826: ...Foundry Switch and Router Installation and Configuration Guide 20 20 December 2000 ...
Page 994: ...Foundry Switch and Router Installation and Configuration Guide 26 10 December 2000 ...
Page 1004: ...Foundry Switch and Router Installation and Configuration Guide B 6 December 2000 ...
Page 1044: ...Foundry Switch and Router Installation and Configuration Guide C 40 December 2000 ...
Page 1048: ...Foundry Switch and Router Installation and Configuration Guide D 4 December 2000 ...
Page 1070: ...Foundry Switch and Router Installation and Configuration Guide Index 18 December 2000 ...