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Virtualized Route Reflector
Nokia VSR Release 14
• Improve network performance with industry-leading virtualized
Route Reflector (vRR) implementation
The virtualized Route Reflector
(vRR) is a virtualized network
function (VNF) delivered by the
Nokia Virtualized Service Router
(VSR).
• Enable cloud scaling with easy addition of memory and
CPU resources
• Optimize the use of available x86 hardware resources
The virtualized implementation
of the Border Gateway Protocol
(BGP) route reflector delivers
industry-leading performance
and supports a full array of route
reflection features, allowing agile
RR deployment in all types of
networking environments.
Autonomous system
VSR
Route Reflector
VSR
Route Reflector
EBGP peer
PE router
(RR client)
PE router
(RR client)
PE router
(RR client)
Overview
PE router
(RR client)
EBGP peer
Virtualized Route Reflector
A Route Reflector, as specified in RFC 4456, is a specific role in a
Border Gateway Protocol (BGP) routing scheme where only a select
number of routers—RRs—are designated as prefix distribution and
policy nodes, participating in volume routing topology updates and are
providing the best paths (according to network policy) to their clients.
BGP route reflection enables highly scalable network topologies and
improves overall efficiency of the network.
The vRR functionality on the
VSR is based on the field-proven
Nokia Service Router Operating
System (SR OS). The Nokia
5620 Service Aware Manager
(SAM) delivers VNF and element
management and allows network
operators to seamlessly manage
physical and virtualized RRs
using consistent and uniform
operations, administration and
maintenance protocols and
management practices.
Route reflection is a control plane function with low impact on data
plane traffic, which makes it ideal for virtualization. A virtualized RR
implementation offers an alternative to dedicated routing platforms,
delivering improved performance and control plane scalability.
Virtualized RR functionality is implemented on the Nokia Virtualized
Service Router (VSR) and features key Nokia innovations that deliver
enhanced performance and scalability.
1
Data sheet
Virtualized Route Reflector
Introducing cloud-optimized route reflection
A carrier-grade vRR solution that caters to your evolving needs
Virtualized BGP RR on the Nokia VSR is operationally equivalent to
the implementation of the BGP RR on the Nokia 7750 Service Router
(SR) or on the Nokia 7950 Extensible Routing System (XRS). The VSR
implements the Nokia SR OS, re-architected and optimized for the
x86 server environment.
Powered by innovations such as symmetric multiprocessing
(SMP) and a 64-bit OS, the Nokia VSR takes full advantage of the
underlying multicore capabilities and larger memory offered by
server virtualization technologies, setting a new benchmark for RR
performance and scalability.
The VSR delivers RR functionality as an integrated, single-virtual
machine (VM) system. The VSR also enables flexible RR deployment as:
a single RR for all services, separate RRs for each service (e.g., internet,
Layer 3 VPN or Layer 2 VPN) or RRs for specific groups of services
(e.g., all IPv6 protocols). In addition, the VSR enables linear RR
performance scaling by fine-tuning VM resources based on application
needs.
As a vRR, the Nokia VSR dramatically improves overall network
convergence times by performing heavy-duty BGP route processing,
for which traditional network elements (designed for high-throughput
applications) are not as well suited. The VSR also optimizes the use of
all available CPU cores.
The Nokia VSR enables easy addition of memory and CPU resources to
improve RR scalability and performance. Increased memory allows for
an increased number of BGP peers and routing entries. Additional CPU
resources improve performance for reflecting or advertising routes as
well as improving route convergence times.
Deployment
The Nokia VSR can be deployed as a vRR in all types of IP environments,
facilitating internet connectivity or deployment of Layer 3 IP VPN
services.
Layer 2 Ethernet VPNs (EVPNs), a next generation of Ethernet services,
are also supported. EVPNs are growing in importance in the industry
because they offer sophisticated access redundancy combined with
Layer 3 VPN-like operations for scalability and control.
2
Data sheet
Virtualized Route Reflector
Technical specifications
BGP
• RFC 1997, BGP Communities Attribute
• RFC 4271, A Border Gateway Protocol 4 (BGP-4)
• RFC 4360, BGP Extended Communities Attribute
• RFC 4456, BGP Route Reflection: An Alternative to Full Mesh Internal
BGP (IBGP)
• RFC 4724, Graceful Restart Mechanism for BGP
• RFC 4760, Multiprotocol Extensions for BGP-4
• RFC 4893, BGP Support for Four-octet AS Number Space
• RFC 5065, Autonomous System Confederations for BGP
• RFC 5575, Dissemination of Flow Specification Rules
• RFC 7311, The Accumulated IGP Metric Attribute for BGP
• RFC 7606, Revised Error Handling for BGP UPDATE Messages
• RFC 7911, Advertisement of Multiple Paths in BGP
EVPN
• draft-ietf-bess-evpn-overlay-02, A Network Virtualization Overlay
Solution using EVPN
• draft-ietf-bess-evpn-prefix-advertisement-02, IP Prefix
Advertisement in EVPN
• draft-ietf-bess-evpn-vpls-seamless-integ-00, (PBB-)
EVPN Seamless Integration with (PBB-)VPLS
• draft-snr-bess-evpn-proxy-arp-nd-00, Proxy-ARP/ND function in
EVPN networks
• RFC 7432, BGP MPLS-Based Ethernet VPN
• RFC 7623, Provider Backbone Bridging Combined with Ethernet VPN
(PBB-EVPN)
Please refer to the Nokia VSR data sheet for system feature
specifications and standards compliance.
Nokia is a registered trademark of Nokia Corporation. Other product and company names
mentioned herein may be trademarks or trade names of their respective owners.
Nokia Oyj
Karaportti 3
FI-02610 Espoo
Finland
Tel. +358 (0) 10 44 88 000
Product code: PR1607021047EN (August)
© Nokia 2016
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