Juniper CBL-M40-PWR-AU ユーザーズマニュアル
JUNOS Internet Software Overview
Routing Engine Software Components
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IS-IS—Intermediate System-to-Intermediate System is an interior gateway protocol
(IGP) for IP networks that uses the shortest-path-first algorithm (SPF algorithm, also
called the Dijkstra algorithm) to determine routes.
(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.
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. The JUNOS RIP
software is compatible with RIP Version 1.
the Bellman-Ford algorithm. RIP is a distance-vector protocol. The JUNOS RIP
software is compatible with RIP Version 1.
Multicast routing protocols
DVMRP—Distance Vector Multicast Routing Protocol is a dense-mode
(flood-and-prune) multicast routing protocol.
(flood-and-prune) multicast routing protocol.
IGMP—Internet Group Management Protocol, Versions 1 and 2, is used to manage
membership in multicast groups.
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.
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.
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.
handle conference session announcements.
Traffic engineering protocols
LDP—Label Distribution Protocol provides a mechanism for distributing labels in
non-traffic-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 by LDP can also traverse
LSPs created by Resource Reservation Protocol (RSVP).
non-traffic-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 by LDP can also traverse
LSPs created by Resource Reservation Protocol (RSVP).
MPLS—Multiprotocol Label Switching enables you to configure LSPs through a
network either manually or dynamically. You can control how traffic traverses the
network by directing it through particular paths, rather than relying on an IGP’s
least-cost algorithm to choose a path.
network either manually or dynamically. You can control how traffic traverses the
network by directing it through particular paths, rather than relying on an IGP’s
least-cost algorithm to choose a path.
RSVP—Resource Reservation Protocol, Version 1, provides a mechanism for
engineering network traffic patterns that is independent of the shortest path
determined by a routing protocol. RSVP itself is not a routing protocol, but is
designed to operate with current and future unicast and multicast routing protocols.
JUNOS RSVP software supports dynamic signaling for MPLS paths.
engineering network traffic patterns that is independent of the shortest path
determined by a routing protocol. RSVP itself is not a routing protocol, but is
designed to operate with current and future unicast and multicast routing protocols.
JUNOS RSVP software supports dynamic signaling for MPLS paths.