Mobile IP Technology and Applications

Summary 115

When to Use Peer-Peer Home Agent Redundancy

On the surface, peer-peer configuration looks like an ideal way to improve network capacity and

performance. When you look closer, however, you can see that this might not be the case. First,

it does not afford extra capacity; the memory used by each Home Agent is the same because the

binding table is replicated. Second, minimal gains are found in signaling capacity because the

processing necessary to add a binding on the active Home Agent is only slightly more than that

for adding a binding on a standby Home Agent.

Peer-peer redundancy adds value in two deployment scenarios. In networks where ...