Nortel 8630gbr 规格指南
Reliability
The Metro Ethernet Routing Switch
8600 architecture is designed to provide
protection strategies at multiple levels to
deliver “five nines” availability.
8600 architecture is designed to provide
protection strategies at multiple levels to
deliver “five nines” availability.
At the device level, the Metro Ethernet
Routing Switch 8600 is equipped with
redundant, hot-swappable, components
— switch fabrics, control processors,
power supplies and fan trays. Temperature
sensors constantly monitor the compo-
nents and cooling systems to maintain
acceptable system conditions.
Routing Switch 8600 is equipped with
redundant, hot-swappable, components
— switch fabrics, control processors,
power supplies and fan trays. Temperature
sensors constantly monitor the compo-
nents and cooling systems to maintain
acceptable system conditions.
At the trunk level, Distributed Multi-
Link Trunking (DMLT) provides redun-
dancy by enabling trunk groups to be
configured across different slots in the
same chassis. In the event of a failure,
links would remain active, because
other modules in the trunk group could
take over.
Link Trunking (DMLT) provides redun-
dancy by enabling trunk groups to be
configured across different slots in the
same chassis. In the event of a failure,
links would remain active, because
other modules in the trunk group could
take over.
Network and link redundancy is provided
by several key features:
by several key features:
• 50ms failover when using ring-based
access with Metro Ethernet Services
Units
Units
• 50ms failover based on LACP MLT
between Metro Ethernet Routing
Switch 8600s
Switch 8600s
• 50ms failover based on 802.1ag
signaling across PBT tunnels
• Multi-Link Trunking
• Sub-second failover based on
RSTP/MSTP protocols (IEEE 802.1w
and 802.1s respectively) on NNI
trunk ports
and 802.1s respectively) on NNI
trunk ports
Nortel’s innovative Split Multi-Link
Trunking (SMLT) and PBT capabilities
improve the scalability and reliability of
Layer 2 networks by removing spanning
tree convergence issues and providing
faster recovery in the event of link
failures
Trunking (SMLT) and PBT capabilities
improve the scalability and reliability of
Layer 2 networks by removing spanning
tree convergence issues and providing
faster recovery in the event of link
failures
Service management
Service providers require mature network
and service management systems that
allow quick configuration of the network
to support new services as well as quality
control of ongoing operations. Since it is
important to get the customer’s service
up and running quickly, and then keep
the service running as measured against
and service management systems that
allow quick configuration of the network
to support new services as well as quality
control of ongoing operations. Since it is
important to get the customer’s service
up and running quickly, and then keep
the service running as measured against
a service level agreement (SLA), the
service provider must have the perform-
ance measurements to back up any
service-level claims. Additionally, if a
fault does occur, the service provider
needs the troubleshooting functionality
to locate the fault, identify which serv-
ices have been impacted and react to
these appropriately.
service provider must have the perform-
ance measurements to back up any
service-level claims. Additionally, if a
fault does occur, the service provider
needs the troubleshooting functionality
to locate the fault, identify which serv-
ices have been impacted and react to
these appropriately.
Nortel’s Metro Ethernet Manager (MEM)
is a complete, robust network and
service management solution that extends
Nortel’s key Metro Ethernet innovations
such as PBB/PBT technologies while
addressing these top-of-mind opera-
tional challenges for service providers.
Purpose-built to simplify Ethernet oper-
ations and facilitate service turn-up,
Metro Ethernet Manager employs a
consistent work-flow approach to plan-
ning and deploying services reliably
while minimizing opportunities for
configuration mistakes, and allowing
quick root cause analysis and recovery
when they do occur.
is a complete, robust network and
service management solution that extends
Nortel’s key Metro Ethernet innovations
such as PBB/PBT technologies while
addressing these top-of-mind opera-
tional challenges for service providers.
Purpose-built to simplify Ethernet oper-
ations and facilitate service turn-up,
Metro Ethernet Manager employs a
consistent work-flow approach to plan-
ning and deploying services reliably
while minimizing opportunities for
configuration mistakes, and allowing
quick root cause analysis and recovery
when they do occur.
Customer premises
Access and aggregation
WAN
Metro Core
Other PBB
networks
Access
networks
Voice
network
Wide Area
Network
Optical
transport
transport
Remote
Office
Office
Residential
building
building
Corporate
headquarters
headquarters
Data center
WLAN
Metro ESU
18xx
MERS
8600
OM 1000,
OME 1000
House
Existing
L2/L3 CLE
OLT,
CMTS,
DSLAM
Fiber, Coax,
or Copper
Ethern
et Access
Ring
MERS
8600
Voice Gateway
Call Server
IP/MPLS
SONET/SDH
LH WDM
VOD
Servers
Video
Headend
MPEG
Encoders
Figure 1. A converged network showing simultaneous delivery of multiple services to varied end users
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