Babel (protocol)
The Babel routing protocol is a distance-vector routing protocol for Internet Protocol packet-switched networks that is designed to be robust and efficient on both wireless mesh networks and wired networks. Babel is described in RFC 8966.[1]
Babel is based on the ideas in Destination-Sequenced Distance Vector routing (DSDV), Ad hoc On-Demand Distance Vector Routing (AODV), and Cisco's Enhanced Interior Gateway Routing Protocol (EIGRP), but uses different techniques for loop avoidance. Babel has provisions for using multiple dynamically computed metrics; by default, it uses hop-count on wired networks and a variant of expected transmission count on wireless links, but can be configured to take radio diversity into account [2] or to automatically compute a link's latency and include it in the metric.[3]
Babel operates on IPv4 and IPv6 networks. It has been reported to be a robust protocol and to have fast convergence properties.[4][5]
In October 2015, Babel was chosen as the mandatory-to-implement protocol by the IETF Homenet working group, albeit on an Experimental basis.[6] In June 2016, an IETF working group was created whose main goal is to produce a standard version of Babel.[7] In January 2021, the working group produced a standard version of Babel,[1] then proceeded to publish a number of extensions, including for authentication, source-specific routing, and routing of IPv4 through IPv6 routers.[8]
Implementations
Script error: No such module "Infobox". Script error: No such module "Check for unknown parameters".Script error: No such module "Check for conflicting parameters". Several implementations of Babel are freely available:
- The standalone "reference" implementation
- A complete reimplementation integrated in the BIRD routing platform[9]
- A version integrated into the FRR routing suite[10] (previously Quagga, from which Babel has been removed[11]).
- A tiny, stub-only subset implementation[12]
- A minimal, IPv6-only reimplementation in Python[13]
- An independent implementation in Java,[14] part of the freeRouter project[15]
Both BIRD and the reference version have support for Source-specific routing[16] and for cryptographic authentication.[17]
References
<templatestyles src="Reflist/styles.css" />
- ↑ a b Template:Cite ietf
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ http://mid.gmane.org/562F5B00.9010802@bellis.me.ukScript error: No such module "Unsubst".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
Script error: No such module "Check for unknown parameters".
External links
- Babel – a loop-avoiding distance-vector routing protocol
- Script error: No such module "citation/CS1". Template:IETF RFC