June 2005
Intermediate to advanced
312 pages
11h 13m
English
Content preview from MPLS VPN Security
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Using Other Encryption Techniques 207
• Dynamic Multipoint VPN (DMVPN)—This model works with the principle of the
Next Hop Resolution Protocol (NHRP): Every IPsec node holds information about
how to reach a next hop server, which returns the address of the target IPsec node to
the originating node. This is a very scalable way to dynamically establish IPsec
tunnels on demand. DMVPN works CE-CE and PE-PE.
• Group Domain of Interpretation (GDOI)—All the previous models maintain an
IPsec security association per peer, even if the peer is found dynamically. This sets
limits to the number of nodes that can be within one IPsec domain because every ...
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