12-18-2009 02:48 AM - edited 03-06-2019 09:00 AM
Hello! Please help: we have 2 routers, 2 areas (0 and 10) and only one 10G link between them. Right now this link belong to area 0, so area 10 is discontigous.
What is the right solution for this situation?
12-18-2009 03:57 AM
m.sobolev wrote:
Hello! Please help: we have 2 routers, 2 areas (0 and 10) and only one 10G link between them. Right now this link belong to area 0, so area 10 is discontigous.
What is the right solution for this situation?
Sorry, it's not clear what you mean, could you draw a topology diagram to show exactly what you mean.
Jon
12-18-2009 04:15 AM
12-18-2009 05:00 AM
m.sobolev wrote:
Thanks for the diagram, makes it a lot clearer.
As to the solution, a bit difficult to say without knowing why it is like this in the first place.
why is the link in area 0 ?
why are the vlan 10/20 interfaces in area 10 ?
do you need 2 areas or could you just place vlan 10/20 in area 0 ?
How much of your network does the diagram represent ?
Jon
12-18-2009 04:16 AM
12-18-2009 04:17 AM
12-18-2009 04:59 AM
Hi,
I will suggests to make separate area for area 20 in Router B and it will work in ospf world without any problem.
hope this helps
Regards
Ganesh.H
12-18-2009 05:16 AM
To make things little bit more interresting:
12-18-2009 05:18 AM
What is the subnet between Router A and Router B fo Area 0.
Regards
Ganesh.H
12-18-2009 05:28 AM
Link between switches it L2 trunk, and OSPF runs on SVI, subnet /30, for example 10.32.0.0/30
12-18-2009 05:38 AM
It will work but you need to configure ip unnumbered for wan interfaces.
hope this will work !!
Regards
Ganesh.H
12-18-2009 05:37 AM
12-18-2009 05:44 AM
I dont get it
I think switch A and switch B each run its own ospf process and both of them serves area 0 and area 10, but between them there is only area 0, so area 10 seems to be discontigous?
12-18-2009 05:49 AM
m.sobolev wrote:
I dont get it
I think switch A and switch B each run its own ospf process and both of them serves area 0 and area 10, but between them there is only area 0, so area 10 seems to be discontigous?
Don't worry, it's me not getting it For some reason i though the switches were routers and you have a L2 switch connecting the vlan 10 interfaces. Apologies for being a bit dense !!
Could you not run the link between the 2 switches as a L2 trunk ?
Jon
12-18-2009 05:55 AM
L2 trunk is key design feature, you can imagine switches are datacenters connected by dark fiber and we need shared L2 domain for server farms
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