Versions

There are three versions of the Acquisition Advice Protocol: RIPv1, RIPv2, and RIPng.

editRIP adaptation 1

The aboriginal blueprint of RIP, authentic in RFC 1058,4 uses classful routing. The alternate acquisition updates do not backpack subnet information, defective abutment for capricious breadth subnet masks (VLSM). This limitation makes it absurd to accept different-sized subnets central of the aforementioned arrangement class. In added words, all subnets in a arrangement chic accept to accept the aforementioned size. There is aswell no abutment for router authentication, authoritative RIP accessible to assorted attacks.

editRIP adaptation 2

Due to the deficiencies of the aboriginal RIP specification, RIP adaptation 2 (RIPv2) was developed in 19935 and endure connected in 1998.6 It included the adeptness to backpack subnet information, appropriately acknowledging Classless Inter-Domain Acquisition (CIDR). To advance astern compatibility, the hop calculation absolute of 15 remained. RIPv2 has accessories to absolutely interoperate with the beforehand blueprint if all Accept to Be Zero agreement fields in the RIPv1 letters are appropriately specified. In addition, a affinity about-face feature6 allows aerial interoperability adjustments.

In an accomplishment to abstain accidental amount on hosts that do not participate in routing, RIPv2 multicasts the absolute acquisition table to all adjoining routers at the abode 224.0.0.9, as against to RIPv1 which uses broadcast. Unicast acclamation is still accustomed for appropriate applications.

(MD5) affidavit for RIP was alien in 1997.78

RIPv2 is Internet Standard STD56 (which is RFC 2453).

Route tags were aswell added in RIP adaptation 2. This functionality allows for routes to be acclaimed from centralized routes to alien redistributed routes from EGP protocols.

editRIPng

RIPng (RIP next generation), authentic in RFC 2080,9 is an addendum of RIPv2 for abutment of IPv6, the next bearing Internet Protocol. The capital differences amid RIPv2 and RIPng are:

Support of IPv6 networking.

While RIPv2 supports RIPv1 updates authentication, RIPng does not. IPv6 routers were, at the time, declared to use IPsec for authentication.

RIPv2 allows adhering approximate tags to routes, RIPng does not;

RIPv2 encodes the next-hop into anniversary avenue entries, RIPng requires specific encoding of the next hop for a set of avenue entries.

RIPng sends updates on UDP anchorage 521 application the multicast accumulation FF02::9.