08-30-2010 12:53 PM - edited 03-04-2019 09:36 AM
Hi techies,
i have to configure ospf over L2 mpls cloud, with 1 hub site all 20 remote spoke sites,
so i hv configured 20 sub-interface with dot1q trunking on physical interface at hub which connects to service provider mpls cloud,
Hub eg config :-
interface FastEthernet0/1.40
encapsulation dot1Q 40
ip address 172.16.1.37 255.255.255.252
ip ospf network point-to-multipoint
!
interface FastEthernet0/1.50
encapsulation dot1Q 50
ip address 172.16.1.1 255.255.255.252
ip ospf network point-to-multipoint
!
interface FastEthernet0/1.51
encapsulation dot1Q 51
ip address 172.16.1.41 255.255.255.252
ip ospf network point-to-multipoint
!
and all remote sites interface as routed interface in their respective subnets .
i am using opsf network type point-to-multipoint,
but my ospf netwrok forms neighborship and then breaks and agian comes up,
debug shows dead timer expire.
please provide your comments.
Thanks
Mazhar
08-30-2010 01:48 PM
Hi Mazhar,
Can you tell us what are you trying to achieve with point-to-multipoint broadcast OSPF network type ? Why you didn't left it on default as broadcast type or point-to-point ?
Point-to-multipoint with /30 masks doesn't make a lot of sense.
Pavol
08-30-2010 03:47 PM
Hi poval,
i started with ospf network type broadcast ( default one) but i saw neighborship flapping due to dead timer expiration, so later i moved all circuits to point-to-multipoint with intention of increasing dead interval and hello interval, but still i see flappings.
Thanks,
Mazhar.
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