Brocade Virtual ADX Switch and Router Guide (Supporting ADX v03.1.00) - Manual (Page 335)

Brocade Virtual ADX Switch and Router Guide 321
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Displaying BGP4+ information
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NOTE
The show commands implemented for BGP4+ correspond to the show commands implemented for
IPv4 BGP. For example, you can specify the show ipv6 bgp command for IPv6 and the show ip bgp
command for IPv4. Also, the displays for the IPv4 and IPv6 versions of the show commands are
similar except where relevant, IPv6 neighbor addresses replace IPv4 neighbor addresses, IPv6
prefixes replace IPv4 prefixes, and IPv6 next-hop addresses replace IPv4 next-hop addresses.
Displaying the BGP4+ route table
BGP4+ uses filters you define, as well as an algorithm to determine the preferred route to a
destination. BGP4+ sends only the preferred route to the Virtual ADX device’s IPv6 table. However,
if you want to view all the routes BGP4+ knows about, you can display the BGP4+ table.
To display the BGP4+ route table, enter the following command at any level of the CLI.
This display shows the following information.
TABLE 1 Summary of BGP4+ routes
This field... Displays...
Number of BGP4+ Routes The number of routes displayed by the command.
Status codes A list of the characters the display uses to indicate the route’s status. The
status code appears in the Status column of the display. The status codes are
described in the command’s output.
Prefix The route’s prefix.
Next Hop The next-hop router for reaching the route from the Virtual ADX device.
Metric The value of the route’s MED attribute. If the route does not have a metric, this
field is blank.
LocPrf The degree of preference for the advertised route relative to other routes in the
local AS. When the BGP4+ algorithm compares routes on the basis of local
preferences, the route with the higher local preference is chosen. The
preference can have a value from 0 – 4294967295.
Weight The value that this Virtual ADX device associates with routes from a specific
neighbor. For example, if the Virtual ADX receives routes to the same
destination from two BGP4+ neighbors, the Virtual ADX prefers the route from
the neighbor with the larger weight.
Virtual ADX# show ipv6 bgp routes
Total number of BGP Routes: 2
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED
E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH S:SUPPRESSED
Prefix Next Hop Metric LocPrf Weight Status
1 2001:db8:2002::/16 :: 1 100 32768 B
AS_PATH:
2 2001:db8:2002:1234::/32 :: 1 100 32768 BL
AS_PATH: