I configured a new subnet, 10.0.4.0/24, for BGP in the prefix-list but it did not show up in the advertised routes.
To find the name of your prefix-list run the command show router prefix-list. in the below example, it is called “NAME-OUT”
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firewall-01 # show router prefix-list
config router prefix-list
edit "NAME-OUT"
config rule
edit 1
set prefix 10.0.2.0 255.255.255.0
unset ge
unset le
next
edit 2
set prefix 10.0.3.0 255.255.255.0
unset ge
unset le
next
edit 2
set prefix 10.0.4.0 255.255.255.0
unset ge
unset le
next
end
next
end
It showed up in the prefix-list
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firewall-01 # get router info bgp prefix-list NAME-OUT
BGP table version is 2, local is 10.10.10.1
Status codes:s suppressed, d damped, h history, *valid > best, -i internal, S Stale
Origin codes:i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.0.2.0/24 10.0.0.1 33456 ?
*> 10.0.3.0/24 10.0.0.1 33456 ?
*> 10.0.4.0/24 10.0.0.1 33456 ?
But not in the advertised routes
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firewall-01 # get router info bgp neighbors 10.10.10.1 advertised-route
BGP table version is 2, local is 10.10.10.1
Status codes:s suppressed, d damped, h history, *valid > best, -i internal, S Stale
Origin codes:i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.0.2.0/24 10.0.0.1 33456 ?
*> 10.0.3.0/24 10.0.0.1 33456 ?
To resolve this I needed to do a BGP soft reset
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exec router clear bgp all soft
Once that was done, the new subnet showed up in the advertised routes
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firewall-01 # get router info bgp prefix-list NAME-OUT
BGP table version is 2, local is 10.10.10.1
Status codes:s suppressed, d damped, h history, *valid > best, -i internal, S Stale
Origin codes:i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.0.2.0/24 10.0.0.1 33456 ?
*> 10.0.3.0/24 10.0.0.1 33456 ?
*> 10.0.4.0/24 10.0.0.1 33456 ?
If it doesn’t show up, make sure you have a static route for the subnet.
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firewall-01 # get router info routing-table static
S 10.0.2.0/24 [10/0] via 10.10.1.1, port1
S 10.0.3.0/24 [10/0] via 10.10.1.1, port1
S 10.0.4.0/24 [10/0] via 10.10.1.1, port1