Lance,
DNA LSAs are not allowed because router received LSAs (ten different
LSAa) without DC bit set in options field from other routers in the
area. That means that there are routers in the area which doesn't
support demand circuit. As you remember, in order to support DNAs,
all routers in the area must support it, which is not the case in
your network.
Sasa
Lance wrote:
>
> I have R6 connected to R5 via an ethernet and a ISDN link. The ISDN link
is
> configured as an OSPF demand circuit however when I do a show ip ospf int I
> get the following output. Notice that it says "DoNotAge LSA not allowed
> (Number of DCbitless LSA is 10)". Why is this, I need for the DoNotAge LSA
> to be allowed and I thought this is what ospf demand-circuit is for. BTW
> this is CCbootcamp lab 8a. Please help?
>
> R6#sho ip ospf int bri0
> BRI0 is up, line protocol is up (spoofing)
> Internet Address 137.20.224.6/20, Area 0
> Process ID 64, Router ID 137.20.60.1, Network Type POINT_TO_POINT, Cost:
> 1562
> Configured as demand circuit.
> Run as demand circuit.
> DoNotAge LSA not allowed (Number of DCbitless LSA is 10).
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Hello due in 00:00:06
> Neighbor Count is 1, Adjacent neighbor count is 1
> Adjacent with neighbor 137.20.240.1 (Hello suppressed)
> Suppress hello for 1 neighbor(s)
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=20231&t=20228
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