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cpresto
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Joined: Tue Jul 18, 2006 3:12 pm

PPPoE auth and routes

Thu Jan 03, 2008 10:38 pm

Hi all,
I've got the following scenario on my net: MT1---PC/CPE1----MT2----CPE2
CPEs (MT based and OSBrdige) have a double IP on their wireless interface, one static (management) and one dynamic assigned to its PPPoE client. MT work as access concentrator and assigns IPs to CPEs only if auth parameters (uid/pwd) are matched.

Problem is as follows:
1)for CPEs that are on the same PC network segment (same broadcast domain), eg. CPE1
I can reach CPEs on their management IP address also if they are not authenticated on access concentrator (MT1)
2)for CPEs that are not on the same PC network segment (same broadcast domain), e.g. CPE2
if CPE is authenticated on the access concentrator I can reach it on both its management and PPPoE IPs, but if it is not authenticated I cannot reach it. In this scenario:
- CPE2 is not reachable from PC;
- CPE2 is reachable from MT2 (replies to ping);
- CPE2 default gateway is MT2 interface on its network segment;
- PC IP address is not masquerade for traffic toward CPE2.

The problem seems not be related to CPEs, because it is experienced the same way for MT based and OSBridge CPEs, so it should be something related to routing policies.

Any idea :?: :!: :?:

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