BGP Router Details

[HS08]

I have 2 spoke and every spoke have 3 connection to the hub (2 using internet connection and 1 using WAN connection)

On spoke1 when i check routing details to spoke2 why i see duplicated entries only for both internet connections?

SPOKE01 (Internet) # get router info routing-table details 10.101.62.1
Routing table for VRF=0
Routing entry for 10.101.0.0/16
  Known via "bgp", distance 200, metric 0, best
  Last update 00:28:56 ago
  * vrf 0 10.10.111.3 priority 1 (recursive is directly connected, INT1_2)
  * vrf 0 10.10.112.3 priority 1 (recursive is directly connected, INT2_0)
  * vrf 0 10.10.111.3 priority 1 (recursive is directly connected, INT1_2)
  * vrf 0 10.10.112.3 priority 1 (recursive is directly connected, INT2_0)
  * vrf 0 10.103.113.1 priority 1 (recursive via MPLS tunnel 192.168.120.1)

If i execute get router info routing table i only have 2 result below

B       10.101.0.0/16 [200/0] via 10.10.111.3 [2] (recursive is directly connected, INT1_2)), 00:16:47, [1/0]
                      [200/0] via 10.10.112.3 [2] (recursive is directly connected, INT2_0), 00:16:47, [1/0]
                      [200/0] via 10.103.113.1 (recursive via MPLS tunnel 192.168.120.1), 00:16:47, [1/0]

So why there are duplicated path in routing table details?

[funkylicious]

hi,

i assume the hub acts like a RR.

how many links are on the hub, if the spokes have 3 links ?

[HS08]

hi @funkylicious 

Hub & spoke have 3 connections (2 using internet and 1 using WAN) like below picture.

All 3 link configured as Route Reflector Client in the hub.

[funkylicious]

first thought is due to the fact that the hub is advertising them and using advpn, when the shortcuts are created you get them again from the spoke.

i assume that 10.103.113.1 is the hub tunnel ip, and 10.10.111.3 / 10.10.112.3 are the other spoke's tunnel ip.

[HS08]

yes 10.103.113.1 is the hub tunnel ip. So this is normal behavior?