Juniper M10i Hardware Manual page 51

BGP—Border Gateway Protocol, version 4, is an Exterior Gateway Protocol
(EGP) that guarantees loop-free exchange of routing information between
routing domains (also called autonomous systems). BGP, in conjunction with
JUNOS routing policy, provides a system of administrative checks and
balances that can be used to implement peering and transit agreements.
ICMP—Internet Control Message Protocol router discovery is a method that
hosts can use to discover the addresses of operational routers on a subnet.
IS-IS—Intermediate System-to-Intermediate System is a link-state interior
gateway protocol (IGP) for IP networks that uses the shortest-path-first
algorithm (SPF algorithm, also called the Dijkstra algorithm) to determine
routes.
OSPF—Open Shortest Path First, version 2, is an IGP developed for IP
networks by the Internet Engineering Task Force (IETF). OSPF is a link-state
protocol that makes routing decisions based on the SPF algorithm.
RIP—Routing Information Protocol, version 2, is an IGP for IP networks
based on the Bellman-Ford algorithm. RIP is a distance-vector protocol. RIP
dynamically routes packets between a subscriber and a service provider
without the subscriber having to configure BGP or to participate in the service
provider s IGP discovery process.
Multicast routing protocols
DVMRP—Distance Vector Multicast Routing Protocol is a dense-mode
(flood-and-prune) multicast routing protocol.
IGMP—Internet Group Management Protocol, versions 1 and 2, is used to
manage membership in multicast groups.
MSDP—Multicast Source Discovery Protocol enables multiple PIM sparse
mode domains to be joined. A rendezvous point (RP) in a PIM sparse mode
domain has a peering relationship with an RP in another domain, thereby
discovering multicast sources from other domains.
PIM sparse mode and dense mode—Protocol-Independent Multicast is a
multicast routing protocol used to route traffic to multicast groups that might
span wide-area and interdomain internetworks. In PIM sparse mode, routers
explicitly join and leave multicast groups. PIM dense mode is a
flood-and-prune protocol.
SAP/SDP—Session Announcement Protocol and Session Description Protocol
handle conference session announcements.
MPLS application protocols
LDP—Label Distribution Protocol provides a mechanism for distributing
labels in nontraffic-engineered applications. LDP allows routers to establish
label-switched paths (LSPs) through a network by mapping network-layer
routing information directly to data-link layer switched paths. LSPs created
Chapter 3: JUNOS Internet Software Overview
Routing Engine Software Components
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