iBGP session between Fortigate and CIsco router

[rtruchy]

Hi everyone,

Actually, i need to have a iBGP session between a Fortigate and a Cisco router.

The session is working with this configuration :

Fortigate :

config router bgp
    set as 65000
        config neighbor
            edit "192.168.10.1"
                set remote-as 65000
                set send-community6 disable
                set update-source "switch"
            next
        end
        config network
            edit 2
                set prefix 172.16.1.248 255.255.255.248
            next
        end
    set network-import-check disable
        config redistribute "connected"
        end
        config redistribute "rip"
        end
        config redistribute "ospf"
        end
        config redistribute "static"
        end
        config redistribute "isis"
        end
        config redistribute6 "connected"
        end
        config redistribute6 "rip"
        end
        config redistribute6 "ospf"
        end
        config redistribute6 "static"
        end
        config redistribute6 "isis"
        end
    set router-id 192.168.10.2

Cisco :

Router#sh run | sec router bgp
router bgp 65000
 bgp log-neighbor-changes
 neighbor 192.168.10.2 remote-as 65000
 neighbor 192.168.10.2 description Session iBGP vers Fortigate 200B
 neighbor 192.168.10.2 version 4
 !
 address-family ipv4
  neighbor 192.168.10.2 activate
  neighbor 192.168.10.2 soft-reconfiguration inbound
  no auto-summary
  no synchronization
 exit-address-family

The iBGP session is OK :

Router#sh ip bgp sum
BGP router identifier 172.16.1.254, local AS number 65000
BGP table version is 2, main routing table version 2
1 network entries using 120 bytes of memory
1 path entries using 52 bytes of memory
2/1 BGP path/bestpath attribute entries using 248 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 420 total bytes of memory
BGP activity 1/0 prefixes, 1/0 paths, scan interval 60 secs

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
192.168.10.2 4 65000 261 229 2 0 0 03:45:50 1

The Fortigate announces a network : 172.16.1.248/29.

The BGP table of the Cisco router is OK :

Router#sh ip bgp
BGP table version is 2, local router ID is 172.16.1.254
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf Weight Path
*>i172.16.1.248/29 192.168.10.2 100 0 i

But the routing table of the router is very strange :

Router#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

     192.168.10.0/30 is subnetted, 1 subnets
C 192.168.10.0 is directly connected, FastEthernet4
     172.16.0.0/29 is subnetted, 1 subnets
B 172.16.1.248 [200/0] via 192.168.10.2, 03:46:52
C 10.0.0.0/8 is directly connected, Vlan1

Indeed, the network 172.16.0.0/29 doesn't correspond to the network 172.16.1.248/29.

Did you ever see this problem (just a display problem) ? And how can I correct it ?

Thanks a lot

Romain