We had IP address x.y.z.36/28 configured on a bridge interface. Also have a.b.c.9/29 on the same bridge interface.
We split the subnet into 2 /29s. The x.y.z.36 address stayed on the bridge interface, but I changed the /28 to /29 via winbox. I hit the up arrow beside the network address entry in the IP address dialog box to clear it. In 4.x I needed to clear the network and broadcast address when changing subnets or the didn't change to match the new IP and prefix length. I hit the Ok button and went on with life. I was still able to access the hosts in that subnet with the new longer prefix. I was connected to the router.
Unfortunately, the OSPF neighbor at the office, Cisco, no longer had a route for x.y.z.32/28 or x.y.z.32/29. Six hours later I was notified that hosts on that x.y.z.32/29 subnet were unreachable.
When I logged in, I disabled the IP address, waited 10 seconds, and enabled the IP address. The subnet was then seen in the routing table of the device at the office.
Unfortunately, I did not log into the other MikroTik routers which have OSPF neighbor relationships with this router.
Is this a known issue?
Code: Select all
[gw1.gvh] /routing ospf> export compact
# apr/15/2012 06:02:38 by RouterOS 5.14
# software id = XXXXXXXXXX
#
/routing ospf instance
set [ find default=yes ] redistribute-connected=as-type-1 redistribute-static=as-type-1 \
router-id=a.b.c.9
/routing ospf interface
add network-type=broadcast passive=yes
add authentication=md5 authentication-key=md5authkeysecret interface=ether1 network-type=\
point-to-point
add authentication=md5 authentication-key=md5authkeysecret interface=ether2 network-type=\
point-to-point
add authentication=md5 authentication-key=md5authkeysecret interface=lan_bridge \
network-type=broadcast
/routing ospf network
add area=backbone network=a.b.c.0/24
add area=backbone network=a.b.d.0/24
add area=backbone network=a.b.e.0/24
add area=backbone disabled=yes network=x.y.z.0/22