Hello!
I’m testing in my LAB a load-balancing configuration between Cisco and Mikrotik RouterBoard1000 V6.10.
I followed the instruction in this link:
http://wiki.mikrotik.com/wiki/Manual:BGP_Load_Balancing_with_two_interfaces
A summary about the scenario:
#I created BGP Session on Cisco (65535) and Mikrotik (65530)
#I created Loopback Interf. on Cisco (10.10.10.1/24) and Mikrotik (10.0.0.2/24)
#Add static route on both route to reach the Loopback
Cisco
ip route 10.0.0.0 255.255.255.0 5.172.2.4 50
ip route 10.0.0.0 255.255.255.0 109.238.3.4 50
Mikrotik
0 ADC dst-address=5.172.2.0/29 pref-src=5.172.2.4 gateway=ether1 gateway-status=ether1 reachable distance=0 scope=10
1 Db dst-address=7.7.7.0/24 gateway=10.10.10.1 gateway-status=10.10.10.1 unreachable distance=20 scope=40 target-scope=255 bgp-as-path=“65535” bgp-med=0 bgp-origin=igp received-from=peer1
2 ADC dst-address=9.9.9.0/24 pref-src=9.9.9.1 gateway=Loopback9 gateway-status=Loopback9 reachable distance=0 scope=10
3 ADC dst-address=10.0.0.0/24 pref-src=10.0.0.2 gateway=Loopback100 gateway-status=Loopback100 reachable distance=0 scope=10
4 A S dst-address=10.10.10.0/24 gateway=ether1,ether2 gateway-status=ether1 reachable,ether2 reachable distance=50 scope=10 target-scope=30
5 ADC dst-address=109.238.3.0/29 pref-src=109.238.3.4 gateway=ether2 gateway-status=ether2 reachable distance=0 scope=10
#Enable BGP Session on Cisco with neighbor IP 10.0.0.2 and announced subnet 7.7.7.0/24
router bgp 65535
no synchronization
bgp router-id 1.1.1.1
bgp log-neighbor-changes
network 7.7.7.0 mask 255.255.255.0
neighbor 10.0.0.2 remote-as 65530
neighbor 10.0.0.2 ebgp-multihop 255
neighbor 10.0.0.2 update-source Loopback100
no auto-summary
#Enable BGP Session on Mikrotik with neighbor IP 10.10.10.1 and announced subnet 9.9.9.0/24
/routing bgp instance
set default router-id=2.2.2.2
/routing bgp network
add network=9.9.9.0/24 synchronize=no
/routing bgp peer
add in-filter=bgp-in multihop=yes name=peer1 remote-address=10.10.10.1 remote-as=65535 ttl=default update-source=Loopback100
And now…the problem!
The session are UP and I can ping 9.9.9.1 from Cisco to Mikrotik
BGP neighbor is 10.0.0.2, remote AS 65530, external link
BGP version 4, remote router ID 2.2.2.2
BGP state = Established, up for 00:32:54
Last read 00:00:45, hold time is 180, keepalive interval is 60 seconds
Neighbor capabilities:
Route refresh: advertised and received(old & new)
Address family IPv4 Unicast: advertised and received
Message statistics:
InQ depth is 0
OutQ depth is 0
Connections established 13; dropped 12
Last reset 00:33:40, due to User reset
External BGP neighbor may be up to 255 hops away.
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Local host: 10.10.10.1, Local port: 11068
Foreign host: 10.0.0.2, Foreign port: 179
2651#ping 9.9.9.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 9.9.9.1, timeout is 2 seconds:
!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
But on mikrotik i can’t ping the subent 7.7.7.0/24 because the gateway is unreachable (see the attachement)
I tried ti change the SCOPE and applied a filter but i have the same situation.
Help please! 
