MikroTik

Hi

I've been banging my head against a wall today and for some reason I can't get ibgp v6 stuff to work.

The problem is occuring across a number of routers but for this example i'm going to focus on getting 2 working as i'm sure the fix will help all the routers.

Router 1 - AS1001

Router 2 - RB1100x2 - v5.18


Both routers are connected to the same switch

Router 1 Config (ipv4 stuff removed)

interface Loopback0
ipv6 address 2402:7E00::7/128

interface GigabitEthernet0/0/0.207
ipv6 address 2402:7E00::1:11/125
ipv6 ospf 200 area 0

ipv6 router ospf 200
redistribute connected

router bgp 45280
neighbor AS45280-CORE-V6 peer-group
neighbor AS45280-CORE-V6 remote-as 45280
neighbor AS45280-CORE-V6 timers 20 60
neighbor 2402:7E00::3 peer-group AS45280-CORE-V6
neighbor 2402:7E00::3 update-source Loopback0
address-family ipv6
redistribute static
neighbor AS45280-CORE-V6 send-community both
neighbor AS45280-CORE-V6 next-hop-self
neighbor AS45280-CORE-V6 soft-reconfiguration inbound
neighbor AS45280-CORE-V6 prefix-list all-v6-routes in
neighbor AS45280-CORE-V6 prefix-list all-v6-routes out
neighbor AS45280-CORE-V6 route-map AS45280-CORE-V6-policy-in in
neighbor AS45280-CORE-V6 route-map AS45280-CORE-V6-policy-out out
neighbor AS45280-CORE-V6 maximum-prefix 20000 restart 10
neighbor 2402:7E00::3 activate

ipv6 route 2402:7E00::/32 Null0


Router 2 - RB1100x2
/interface bridge
add admin-mac=01:00:00:00:01:00 ageing-time=5m arp=enabled auto-mac=no comment=Loopback disabled=no forward-delay=15s l2mtu=65535 max-message-age=20s mtu=1500 \
name=lobridge priority=0x8000 protocol-mode=none transmit-hold-count=6
add admin-mac=00:00:00:00:00:00 ageing-time=5m arp=enabled auto-mac=yes comment="Links to sw-nztg-sky-stack01" disabled=no forward-delay=15s l2mtu=1598 \
max-message-age=20s mtu=1500 name=bridge1 priority=0x8000 protocol-mode=none transmit-hold-count=6
/interface bridge port
add bridge=bridge1 disabled=no edge=auto external-fdb=auto horizon=none interface=ether1 path-cost=10 point-to-point=auto priority=0x80
add bridge=bridge1 disabled=no edge=auto external-fdb=auto horizon=none interface=ether2 path-cost=10 point-to-point=auto priority=0x80

/interface vlan
add arp=enabled comment="Link to sky-core01 \\ 02" disabled=no interface=bridge1 l2mtu=1594 mtu=1500 name=vlan207 use-service-tag=no vlan-id=20

/ipv6 address
add address=2402:7e00::3/128 advertise=no comment=Loopback disabled=no eui-64=no interface=lobridge
add address=2402:7e00::1:13/125 advertise=no comment="Link to sky-core01/02" disabled=no eui-64=no interface=vlan207

/routing ospf-v3 instance
set [ find default=yes ] disabled=no distribute-default=never metric-bgp=auto metric-connected=20 metric-default=1 metric-other-ospf=auto metric-rip=20 \
metric-static=20 name=default redistribute-bgp=no redistribute-connected=no redistribute-other-ospf=no redistribute-rip=no redistribute-static=no router-id=\
114.134.167.3
/routing ospf-v3 area
set [ find default=yes ] area-id=0.0.0.0 disabled=no instance=default name=backbone type=default
/routing ospf-v3 interface
add area=backbone cost=10 dead-interval=40s disabled=no hello-interval=10s instance-id=0 interface=vlan207 network-type=default passive=no priority=1 \
retransmit-interval=5s transmit-delay=1s use-bfd=no
add area=backbone cost=10 dead-interval=40s disabled=no hello-interval=10s instance-id=0 interface=lobridge network-type=default passive=no priority=1 \
retransmit-interval=5s transmit-delay=1s use-bfd=no

/routing bgp peer
add address-families=ipv6 as-override=no default-originate=never disabled=no hold-time=3m in-filter=ALL-ROUTES instance=default multihop=no name=v6-sky-core01 \
nexthop-choice=force-self out-filter=ALL-ROUTES passive=no remote-address=2402:7e00::7%all remote-as=45280 remove-private-as=no route-reflect=no \
tcp-md5-key="" ttl=default update-source=lobridge use-bfd=no

From the cisco I can see it advertising routes - in particular 2402:7E00::/32
rt-nztg-sky-core01#show bgp ipv6 unicast neighbors 2402:7E00::3 advertised-routes | in 2402:7E00::/32
*> 2402:7E00::/32 :: 0 32768 ?

On the mikrotik I can see the route being learnt but the status is unreachable - thus doesn install in route table and won't advertise to external peers

/ipv6 route print detail where received-from=v6-sky-core01
334 Db dst-address=2402:7e00::/32 gateway=2402:7e00::7 gateway-status=2402:7e00::7 unreachable distance=200 scope=40 target-scope=30 bgp-local-pref=100 bgp-med>
bgp-origin=incomplete received-from=v6-sky-core01

From the mikrotik if I ping 2402:7e00::7 through winbox I get an answer from 2402:7e00::1:11


I bet i've missed something... any help would be greatly appreciated.

Thanks!

See this: http://forum.mikrotik.com/viewtopic.php ... 4&p=320493

RouterOS ignores the OSPF LSA from a loopback address. The workaround is to add static routes for your loopback addresses.

Is there any plan from mikrotik to fixed this issue?
I use version 6.34 this issue still occured.

Is there any plan from mikrotik to fixed this issue?
I use version 6.34 this issue still occured.

When the mythical jabberwocky known as ROSv7 comes out of the mists, this is one of the many things that's been promised will be fixed....

And I'm with you, this is broken in a big way.