What version(s) of ROS are you using? We have a couple of the routers that
are back-rev, and we're wondering if this is a version issue. It's kind of
ironic that the only route that does not propagate is the default route.
That seems counter to what you would expect.
--
bp
part15sbs{at}gmail{dot}com
On Thu, Jul 19, 2018 at 3:07 PM Nate Burke <[email protected]> wrote:
> Exactly, only the default route is affected. I see the same thing. All
> other routes are fine except for the default route.
>
> On 7/19/2018 5:02 PM, Bill Prince wrote:
>
> It's a mix of Mikrotik routers. Many MIPSBE, CCR, and X86 architectures.
>
> It seems to be specific to the OSPF routing table and the default route.
> If it's not a default route, but a loopback interface, or other ordinary
> interface, the route will propagate from one end to the other almost
> immediately. But if it's the default route, it will drop from ip/routes,
> but hang out as a zombie in OSPF.
>
> --
> bp
> part15sbs{at}gmail{dot}com
>
>
> On Thu, Jul 19, 2018 at 2:02 PM Nate Burke <[email protected]> wrote:
>
>> What types of routers? I've seen this happen on Mikrotik. Any OSPF
>> change anywhere in the network will fix it. I have dedicated routers
>> hanging at points on the network running a script that pings an Internet
>> Address, and downs it's OSPF network if it's unreachable. To address this
>> specific senario.
>>
>> On 7/19/2018 2:02 PM, Sterling Jacobson wrote:
>>
>> Maybe not quite a similar problem, but I had forgotten to advertise BGP
>> one time on one of the routers when I thought things would magically fail
>> over.
>>
>>
>>
>>
>>
>>
>>
>> *From:* AF <[email protected]> <[email protected]> *On
>> Behalf Of * Bill Prince
>> *Sent:* Thursday, July 19, 2018 11:44 AM
>> *To:* AFMUG <[email protected]> <[email protected]>
>> *Subject:* [AFMUG] OSPF not propagating default route...
>>
>>
>>
>> Our backbone is 9 hops from one end to the other. We have 2 ASes and 2
>> exits at either end. "Most" of the time the traffic is 50/50 right at the
>> midpoint (4 hops one way, and 4 hops the other). However, when we kill BGP
>> at one end or the other, the default routes do not switch over. The two BGP
>> routers are set to "distribute-default" "always as type 1". Clearly, this
>> is not working the way we expect it to. Any clues about what we are missing
>> here?
>>
>>
>>
>>
>>
>> --
>>
>> bp
>>
>> part15sbs{at}gmail{dot}com
>>
>>
>>
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>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>>
>
>
>
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