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Single ip is not able to advertise in BGP

Hi,

I need to advertise a single ip in the BGP but it is not working.

Due to IOS version or configuration issue.

Please check below configuration and help me.

 

router bgp 650321

network 10.10.10.10 mask 255.255.255.255

 

 

 

 

2 REPLIES 2
Julio E. Moisa
VIP Mentor

Hi

BGP will advertise the single IP if you have an entry into the routing table with  subnet mask /32 otherwise it will not be advertised. 

So verify the subnet mask through: show ip route 10.10.10.10, and check if it is a /32 or other subnet mask.

 

BGP will match the subnet submitted with network command and the subnet mask included into the routing table. 

 

If the ip 10.10.10.10 is part of a loopback, you can configure the subnet mask 255.255.255.255. Other way could be create a static route: ip route 10.10.10.10 255.255.255.255 <next hop> 

 

Hope it is useful

:-)




>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<
paul driver
VIP Mentor

Hello

Do you have a bgp peering otherwise a simple network statement like you have posted will no work, you first need to establish a bgp peering and then advertise your prefixes.

 

res

Paul



kind regards
Paul

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