This document describes use of Forwarding Detection for
Multi-chassis Link Aggregation Group to provide faster than Link
Aggregation Control Protocol convergence. This specification enhances
and updates RFC 7130 Bidirectional Forwarding Detection (BFD) on Link
Aggregation Group (LAG) Interfaces.
This document describes extensions to the Path Computation Element
(PCE) Communication Protocol (PCEP) to signal path profile
identifiers. A profile represents a list of path parameters or
policies that a PCEP peer may invoke on a remote peer using an opaque
identifier. When a path computation client (PCC) initiates a path
computation request, the PCC can signal profile identifiers to invoke
path parameters or policies defined on the PCE which would influence
the path computation. Similarly, when a PCE initiates or updates a
path, the PCE can signal profile identifiers to invoke path parameters
or policies defined on the PCC which would influence the path setup.
Existing traffic engineering related link attribute advertisements
have been defined and are used in RSVP-TE deployments. Since the
original RSVP-TE use case was defined, additional applications (e.g.,
Segment Routing Traffic Engineering, Loop Free Alternate) have been
defined which also make use of the link attribute advertisements. In
cases where multiple applications wish to make use of these link
attributes the current advertisements do not support application
specific values for a given attribute nor do they support indication
of which applications are using the advertised value for a given link.
This document introduces new link attribute advertisements in OSPFv2
and OSPFv3 which address both of these shortcomings.
Deployment experience gained from implementing algorithms to determine
Loop-Free Alternates (LFAs) for multi-homed prefixes has revealed some
avenues for potential improvement. This document provides explicit
inequalities that can be used to evaluate neighbors as a potential
alternates for multi-homed prefixes. It also provides detailed
criteria for evaluating potential alternates for external prefixes
advertised by OSPF ASBRs. This documents updates and expands some of
the Routing Aspects as specified in Section 6 of RFC 5286.
This document describes how Bidirectional Forwarding Detection (BFD)
can be used to support sub-second detection of a Master Router failure
in the Virtual Router Redundancy Protocol (VRRP).
As Enterprises and Service Providers upgrade their brown field or
green field MPLS/SR core to an IPv6 transport, Multiprotocol BGP (MP-
BGP)now plays an important role in the transition of the core as well
as an edge from IPv4 to IPv6. Operators can now continue to support
the legacy IPv4, Virtual Private Network (VPN)-IPv4, and Multicast
VPN-IPv4 customers. This document describes the critical use case and
OPEX savings of being able to leverage the MP-BGP capability exchange
usage as a pure transport, allowing both IPv4 and IPv6 to be carried
over the same (Border Gateway Protocol) BGP TCP session. By doing so,
provides for the elimination of Dual Stacking on the Provider Edge -
Customer Edge connections. Thus making the eBGP peering IPv6-ONLY to
now carry both IPv4 and IPv6 Network Layer Reachability Information
(NLRI). This document now provides a solution for Internet Exchange
Point (IXP) that are facing IPv4 address depletion at these peering
points to use BGP-MP capability exchange defined in [RFC8950] to carry
IPv4 (Network Layer Reachability Information) NLRI in an IPv6 next hop
using the [RFC5565] softwire mesh framework.
Segment Routing (SR) leverages the source routing paradigm. A node
steers a packet through an ordered list of instructions, called
segments. Segment Routing can be applied to the Multi Protocol Label
Switching (MPLS) data plane. Entropy label (EL) is a technique used in
MPLS to improve load-balancing. This document examines and describes
how ELs are to be applied to Segment Routing MPLS.
This document specifies extensions to BGP-LS for the collection and
distribution of IP tunnel information. Such information can be
distributed to external components for service mapping and tunnel
selection.
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