I have this customer who is reluctant to re-subnetting/reassign their site A,B,C,D, and E. All the CE router have ISDN backup to our PE-ISDN. We are using VPDN concept. The topology for this customer is fully mesh.
Sites A, B and C consist of subnet 192.168.1.x and there are lots of hosts. Each sites in A, B and C have a unique hosts. There are couple option/solution that spinning around my mind.
1. Since the PE-CE links address space comes from our service provider block, I've been thinking to NAT. Is it OK with this option? How about integration with ISDN? Would be any issue?
2. Offer L2 at site A, B and C. Since most of my PE are 3640/7200 not sure whether they support EToM or VPLS if I'm not mistaken, starting from 7600 series could offer the services. Can we have a mixture of L2/L3 on single VRF?
3. It is possible to do tunneling? GRE? IPSec? DMVPN?
Introduction: The "external-out enable" command is available for
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IntroductionIn this article we'll discuss how to troubleshoot packet
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