Which area for PPPoE Server ?

RouterOS Forwarding Protocols
1

Hi All,
I have just passing from bridged network to a fully routed network with ospf, I keeped pppoe server’s on backbone area… should i use stub area for pppoe server’s ? or they should in backbone are ? I use backbone area for pppoe_server ip and loopback ip. and Im using that command below for customer’s pppoe_client ip range on server;

/routing ospf area add area-id=0.0.0.1 name=pppoe1 type=stub  inject-summary-lsas=yes
/routing ospf network add area=pppoe1 network=100.64.15.0/24
/routing ospf area range add advertise=yes area=pppoe1 range=100.64.15.0/24
/routing ospf interface add interface=all passive=yes

Thanks.

2

It can be done on ASBR router in order to realease cusomer’s ppp tunnels traffic from your AS right to the Internet.

3

sorry I dont understand, can you explain it more ?

4

Yes, you should use a stub area for PPPoE. We have multiple concentrators in different places and so we use a stub area on each, we have the router ID double as the area ID for the stub area so that we don’t need to separately track the stub areas. Do not put the customers in the backbone or you will get customer /32’s sent as LSA’s creating too many routing updates on connection or disconnection of customers. Having the loopback and other non-PPPoE things in the backbone area on the same router is fine.

5

if you want to sleep better, play with totally stub area :slight_smile:

6

Hi mducharme,
I will create rules for put the customers to stub area as below, I use this on pppoe_server’s

/routing ospf area add area-id=0.0.0.1 name=pppoe1 type=stub  inject-summary-lsas=yes
/routing ospf network add area=pppoe1 network=100.64.15.0/24
/routing ospf area range add advertise=yes area=pppoe1 range=100.64.15.0/24
/routing ospf interface add interface=all passive=yes

Now ppoe_server’s on backbone area, and you suggest me that I should keep them at stub area, am I true ? I will try to draw some diagram to show better

Thanks

7

inject-summary-lsas=no

8

working on to sleep better :slight_smile:

9

Thanks nichky I will change it.

10

here is small diagram for show better I hope it will help to undestand.
Network Diagram.jpg
On here area1 type is default, is better to use type stub in here ?

thanks all for your helps

11

Do you know what a difference between default and stub and totally stubby area? Which types goes through areas,which no? and whats the goal?
The answer will be dependent what you want to do

https://networklessons.com/ospf/ospf-lsa-types-explained/

12

I want full connectivity with backbone are from all of the other areas, cause ppoe_server on backbone are, and I sent ppppoe connections to pppoe server over eoip.

13

How you mean “and I sent ppppoe connections to pppoe server over eoip.”

just keep in mind all non backbone MUST be connected to backbone area, otherwise you have to play with virtual link.

14

On Ap’s I create eoip tunnel betwen AP and pppoe_server and I sent customers pppoe_client connections over this eoip to pppoe_server

just keep in mind all non backbone MUST be connected to backbone area, otherwise you have to play with virtual link.

all of them as like this

15

can I use totally stub area for area1 ?

16

any help ?

17

Of course you can if it’s stub. If it’s has no exit to any other places except backbone. Also if area1 has only one uplink, you can use totally stub area, to loose all specific routes.

18

thanks Anumrak,
how many router can be one area in ospf, is there any limitation ? cause I changed this area1 to stup and there is nearly 80 router.
and pppoe_server should be stub area also ? should i create new stub area at backbone roter and put the pppoe_server to this area ?

Thanks

19

“should i create new stub area at backbone roter and put the pppoe_server to this area” - yes, only because of saving routers energy for recalculations of SPF.

Official Cisco limitation is 100 routers, but in reality I saw not more that tens.

20

Thanks for your help;

I will create new pppoe_serever and put it new are and test to see results, cause I have 5 pppoe_server on system and all of them in backbone area.

you mean that, its not stable when pass 10 routers in one area ? I think I have more than 70 router in one area(prefer to use totally stub).
I will re configure my network if that make me problem.

thanks again for sharing your experience…