From: Dave Gingrich (Dave@xxxxxxx)
Date: Thu Aug 24 2000 - 16:18:19 GMT-3
Don't make it too complicated...
Try adding: async default routing to the interfaces.
-dg
At 20:50 8/24/00 +0200, Alejandro Cadarso wrote:
>Hi
>
>I'm trying to make a lab about OSPF, and I'm using a dedicated
>connection between two routers with Async interfaces, emulating a leased
>line:
>
>interface Async1
> ip address 192.19.18.1 255.255.255.0
> no ip directed-broadcast
> encapsulation ppp
> async dynamic routing
> async mode dedicated
>
>My problem is that I've "No Hellos (Passive interface)"
>
>2503-bar#sh ip ospf interface async1
>Async1 is up, line protocol is up
> Internet Address 192.19.18.1/24, Area 5
> Process ID 5, Router ID 190.1.1.1, Network Type POINT_TO_POINT, Cost:
>5263
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> No Hellos (Passive interface)
> Neighbor Count is 0, Adjacent neighbor count is 0
> Suppress hello for 0 neighbor(s)
>
>And obviously this doesn't allow to form the adjacency with the other
>router,I tried to use the no version of the passive-interface command to
>enable routing updates to be sent over this interface, even when I don't
>put in my configuration "passive interface Async5", and it doesn't
>appear in my conf.
>
>because of this I suppose that IOS doesn't allow to form adjacencies in
>ASYNC interfaces. am I correct?. in this case anybody knows Why?
>
>Besides, looking for Information I've found in the CCO:
>
>>Configuring a Simplex Ethernet or Serial Interface
>>
>>Because simplex interfaces between two devices on an Ethernet represent
only one network segment, for OSPF you must configure >the transmitting
interface to be a passive interface. This prevents OSPF from sending hello
packets for the transmitting >interface. Both devices are able to see each
other via the hello packet generated for the receiving interface.
>>
>>This means that the suppression of sending hello packets is required on
the specified interface. This is accomplished using >the following command:
>>
>>passive interface type number
>>
>>Note Why are they called simplex interfaces? Simplex means half duplex,
and this means they typically have one transmitter. >However, the newer
devices have interfaces that allow full duplex, which means fewer
collisions during transmissions. Most >interfaces default to simplex.
>
>I can't understad "Simplex means half duplex", I never need to
>configure passive interfaces for ethernet or Serial interfaces and
>obviously everithing works fine.
>
>any ideas about what means this information?
>
>Regards,
>
>Alejandro.
>
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