Generic Routing Encapsulation


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Generic Routing Encapsulation

(networking, protocol)
(GRE) A protocol which allows an arbitrary network protocol A to be transmitted over any other arbitrary network protocol B, by encapsulating the packets of A within GRE packets, which in turn are contained within packets of B.

Defined in RFC 1701 and RFC 1702 (GRE over IP).
References in periodicals archive ?
Because the user network interfaces for the technology are the standard Protocol Independent Multicast (PIM) and Internet Group Management Protocol (IGMP), it can be housed without changing users' multicast environment configuration and it has the advantage of not requiring the use of tunneling, such as generic routing encapsulation (GRE) on the users' side for the multicast.
The company has been a leader in testing, implementing and trialing GMPLS protocols such as Open Shortest Path First - TE, Link Management Protocol (LMP) and Generic Routing Encapsulation (GRE).
Through collaboration with IPSec VPN and generic routing encapsulation (GRE) traffic, this module can allow decryption, tunnel termination, and traffic inspection at the first point of entry into the network which is an industry first.

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