BGP routing issue

Hoi Karl-Heinz and welcome to the UTM Community!

Please show pictures of your configuration including pictures of the Edits of the objects used.

Cheers - Bob

Hello Bob,

Glad to be back :)

Hope these pictures are sufficient:

BGP neighbor definition:

Default originate was set after studying the video on https://www.youtube.com/watch?v=4Od4iqSMvd0

BGP Summary:

Router ID is Ip adress from assigned subnet that should be used for internet traffic

Interface Definitions:

BGP WAN is what should connect to internet via BGP

Additional addresses:

I though this was necessary (these are the two IP adresses used by our node and Neighbor).

What I am trying to do is, after succesfully connecting to the neighbor, is to use the 80.113.68.176/28 subnet to communicate with the outside world. 

Everything looks OK, BGP Neighbor shows:

BGP neighbor is 213.126.238.77, remote AS 6830, local AS 65000, external link
BGP version 4, remote router ID 213.126.238.214
BGP state = Established, up for 00:00:08
Last read 00:00:08, hold time is 180, keepalive interval is 60 seconds
Neighbor capabilities:
4 Byte AS: advertised and received
Route refresh: advertised and received(old & new)
Address family IPv4 Unicast: advertised and received
Graceful Restart Capabilty: advertised
Message statistics:
Inq depth is 0
Outq depth is 0
Sent Rcvd
Opens: 1 1
Notifications: 0 0
Updates: 2 2
Keepalives: 2 1
Route Refresh: 0 0
Capability: 0 0
Total: 5 4
Minimum time between advertisement runs is 30 seconds

For address family: IPv4 Unicast
Inbound soft reconfiguration allowed
Community attribute sent to this neighbor(both)
Default information originate, default sent
1 accepted prefixes

Connections established 1; dropped 0
Last reset never
Local host: 213.126.238.78, Local port: 53423
Foreign host: 213.126.238.77, Foreign port: 179
Nexthop: 213.126.238.78
Nexthop global: ::
Nexthop local: ::
BGP connection: non shared network
Read thread: on Write thread: off

Unicast shows:

BGP table version is 0, local router ID is 80.113.68.178
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete

Network Next Hop Metric LocPrf Weight Path
*> 0.0.0.0 213.126.238.77 100 0 6830 6830 i
*> 80.113.68.176/28 0.0.0.0 0 100 32768 i
*> 172.30.0.0 0.0.0.0 0 100 32768 i

Total number of prefixes 3

I must be doing something basic wrong with routing, but I can't figure it out yet. ip route on the UTM shows no Defaulg GW, seems that that shoudl be it (hopefully)

Thanx!

Karl-Heinz

Hello Bob,

Glad to be back :)

Hope these pictures are sufficient:

BGP neighbor definition:

Default originate was set after studying the video on https://www.youtube.com/watch?v=4Od4iqSMvd0

BGP Summary:

Router ID is Ip adress from assigned subnet that should be used for internet traffic

Interface Definitions:

BGP WAN is what should connect to internet via BGP

Additional addresses:

I though this was necessary (these are the two IP adresses used by our node and Neighbor).

What I am trying to do is, after succesfully connecting to the neighbor, is to use the 80.113.68.176/28 subnet to communicate with the outside world. 

Everything looks OK, BGP Neighbor shows:

BGP neighbor is 213.126.238.77, remote AS 6830, local AS 65000, external link
BGP version 4, remote router ID 213.126.238.214
BGP state = Established, up for 00:00:08
Last read 00:00:08, hold time is 180, keepalive interval is 60 seconds
Neighbor capabilities:
4 Byte AS: advertised and received
Route refresh: advertised and received(old & new)
Address family IPv4 Unicast: advertised and received
Graceful Restart Capabilty: advertised
Message statistics:
Inq depth is 0
Outq depth is 0
Sent Rcvd
Opens: 1 1
Notifications: 0 0
Updates: 2 2
Keepalives: 2 1
Route Refresh: 0 0
Capability: 0 0
Total: 5 4
Minimum time between advertisement runs is 30 seconds

For address family: IPv4 Unicast
Inbound soft reconfiguration allowed
Community attribute sent to this neighbor(both)
Default information originate, default sent
1 accepted prefixes

Connections established 1; dropped 0
Last reset never
Local host: 213.126.238.78, Local port: 53423
Foreign host: 213.126.238.77, Foreign port: 179
Nexthop: 213.126.238.78
Nexthop global: ::
Nexthop local: ::
BGP connection: non shared network
Read thread: on Write thread: off

Unicast shows:

BGP table version is 0, local router ID is 80.113.68.178
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete

Network Next Hop Metric LocPrf Weight Path
*> 0.0.0.0 213.126.238.77 100 0 6830 6830 i
*> 80.113.68.176/28 0.0.0.0 0 100 32768 i
*> 172.30.0.0 0.0.0.0 0 100 32768 i

Total number of prefixes 3

I must be doing something basic wrong with routing, but I can't figure it out yet. ip route on the UTM shows no Defaulg GW, seems that that shoudl be it (hopefully)

Thanx!

Karl-Heinz

Additional information: I can reach the UTM from outside, so a ping / traceroute from an external address (to 80.113.68.178) works. The only thing I am still not able to figure out is how to get my UTM to communicate to the outside world. I now uses the Neighbor address as a gateway, which is not what it should be.

Any suggestions?

Regards,

Karl-Heinz

Finally got it working.

The answer was to change our masquerade rules. Normally, we would masquerade all internal networks to use the primary address. However, when using BGP, it seems that this address is set to the local BGP ip address, which is a non-routable address.

We defined an additional address on the network card, and changed the masquerade address to that IP. Worked like a charm :)