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DATA SHEET
Cisco Catalyst 6500 Series SupervisorEngines
The supervisor engines for Catalyst® 6500 Series
switches deliver the latest advanced switching
technology with proven Cisco software to power
a new generation of scalable, intelligent multilayer
switching solutions for both enterprise and service
provider environments.
The Catalyst 6500 Series supervisor engines,
including the Supervisor Engine 2 and the Supervisor
Engine 1A, deliver intelligent multilayer switching
and network management; both supervisors also
support two Gigabit Interface Converter
(GBIC)-based Gigabit Ethernet uplink ports for
increased port density and cost effectiveness.
Figure 1 Catalyst 6500 Series Supervisor Engine 2(WS-X6K-SUP2-PFC2)
Figure 2 Catalyst 6500 Series Supervisor Engine1A
The Supervisor Engine 2 uses the latest ASIC
technology, building upon the Supervisor Engine
1A to deliver next-generation features and
services. The Supervisor Engine 2 is a key
component of the new Cisco Express Forwarding
(CEF)-based architecture that enables distributed
forwarding. The Supervisor Engine 2 also acts as
the control module for the Catalyst 6500 series
architecture built around the crossbar fabric
which scales the bandwidth to 256 Gbps.
Supervisor Engine 2 is required to enable a
Catalyst 6500 series with a 256-Gbps crossbar
architecture.
Supervisor Engine 2 allows connections to both
the existing bus and switch fabrics making it a
suitable product for the entire Catalyst 6500
Series. This also allows full investment protection
for customers who hope to transition into the new
architecture by allowing them to populate the
Cisco Systemsight © 2001 Cisco Systems, Inc. All Rights Reserved.
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chassis with classic (non fabric-enabled cards) as well as
new fabric-enabled cards. Both Supervisor Engines 2 and
1A deliver the most advanced intelligent switching
available in the industry, providing per-port application
recognition, admission control, prioritization, and
policing with multiple hardware queues to minimize
network congestion and packet latency. This advanced
Quality of Service (QoS) support is essential for enabling
network-wide deployment of mission-critical applications
and enterprise voice services and solutions. Supervisor
Engine 2 further enhances performance with features like
multicast replication in hardware, required for video
streaming applications. This allows both enterprises and
services providers to use multiservice applications
without sacrificing performance.
Supervisor Engines Provide IntelligentServicesCatalyst 6500 Series switches support both Supervisor 1A
and 2, providing a scalable solution, investment protection,
and common sparing options. These supervisor engines
enable high-speed switching bandwidth, delivering superior
levels of switching performance for high-density Gigabit
Ethernet backbones. The Catalyst 6500 Series Supervisor
Engine 1A supports up to 15 million packets per second
(Mpps) in the existing 32-Gbps bus architecture with 130
Gigabit ports per chassis. Supervisor Engine 2, when
installed with the crossbar fabric, doubles the central
forwarding performance for both Layer 2 and Layer 3 to 30
Mpps and allows up to 194 Gigabit Ethernet ports per
chassis. Supervisor Engine 2 enables the distributed
forwarding architecture that scales the aggregrate
forwarding performance to 210 Mpps. Supervisor Engine 2
also supports the new Optical Services Modules that provide
optical WAN connectivity via PXF processors for distributed
high touch IP Services. Please refer to the following url for
more information on Optical Services Modules: http://
www.cisco.com/warp/public/cc/pd/rt/7600osr/prodlit/
index.shtml Both Supervisor Engine 1A and 2 provide
support for the FlexWAN module for WAN-edge
connectivity. The Supervisor Engine 1A is positioned in
Premier AVVID wiring closets, whereas Supervisor Engine 2
is positioned in the high density Premier AVVID wiring
closet, distribution and core, where distributed Layer 3
services are required. Supervisor Engine 2 can also be
positioned in high-end server farms in both service providers
and large enterprises, where distributed forwarding can
provide performance scalability. The additional memory
requirements for Supervisor Engine 2, MSFC2, and DFC are
listed below:
Table 1 Memory Requirements for Supervisor Engine 2
1FLM stand for Fixed Length Mask2 VLSM stands for Variable Length Subnet Mask
Supervisor Engine 2 Delivers EnhancedPerformanceSupervisor Engine 2 acts as the control module for the new
architecture built around the crossbar fabric that
interconnects all the line cards with point-to-point,
full-duplex serial connections. Supervisor Engine 2 is a key
component of the CEF-based distributed forwarding
architecture. Supervisor Engine 2 consists of three separate
components including:
1. Supervisor Engine—The supervisor engine itself that
provides connectivity to the 32 Gbps bus as well as the
crossbar fabric.
2. Policy Feature Card (PFC) 2—Supervisor Engine 2
ships with a PFC2 that constitutes a critical
component of the distributed CEF architecture. It
contains all Application-Specific Integrated Circuits
(ASICs) for Layer 2 and 3 look-ups and performs
many Cisco IOS® features in hardware. It performs IP
Unicast and Multicast forwarding, QoS, and Access
Control List (ACL) lookups in hardware.
Scales central forwarding to 30 Mpps.
3. Multilayer Switch Feature Card (MSFC) 2—This card
is a configurable option, performs Layer 3
functionality and is a requirement for CEF-based
forwarding information base (FIB).
Product
RouteTableSizeFLM1
50KVLSM2:32 K
RouteTableSizeFLM: 150KVLSM:64K
RouteTableSizeFLM:250KVLSM: 150K
SupervisorEngine 2
128MB 256MB 512MB
MSFC2 128MB 256MB 512MB
DFC 128MB 128MB 256MB
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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PFC2 is a critical component of the distributed forwarding
architecture. With Supervisor Engine 2, both Layer 2 and
Layer 3 performance is doubled to 30 Mpps. A Supervisor
Engine 2 equipped with a PFC2 and an optional MSFC2
enables a distributed forwarding mechanism for both
Layer 2 and Layer 3 that is an effective solution for service
providers as well as large enterprises. In a CEF-based
architecture, a FIB and an adjacency table is created for Layer
3 forwarding. This FIB has the most current routing
information and eliminates the need for the first packet of
every flow to be switched in software. When an MSFC2 is
not present, Layer 2 forwarding is also performed centrally
in hardware, via ASICs, at 30 Mpps. MSFC2 is, however,
required for both Layer 3 central forwarding at 30 Mpps as
well as distributed forwarding. This is because distributed
forwarding is only supported in Cisco IOS software, which
requires an MSFC2. IP multicast replication and forwarding
is also performed directly in hardware. Thus, a Supervisor
Engine 2 can be deployed in scenarios with or without an
MSFC2 for higher centralized forwarding performance. The
FIB and adjacency tables are capable of storing 256K entries
each.
Distributed forwarding can be enabled via a daughter
card on the new fabric-enabled linecards. Please see the
Distributed Forwarding Card data sheet for more
pertinent information. http://www.cisco.com/warp/
public/cc/pd/si/casi/ca6000/prodlit/65dfc_ds.htm. PFC
enhances performance by performing certain Cisco IOS
features, such as Policy Based Routing (PBR), standard/
extended ACLs, and reflexive ACLs in hardware. In
addition, PFC2 performs features like unicast RPF and
transmission control protocol (TCP) intercept in
hardware. Performing these functions in hardware
ensures that there is no performance penalty for enabling
certain high-security features to protect the integrity of
hosted applications.
While PFC2 handles many features such as ACLs
similarly to the PFC, it incorporates enhancements in PBR
where the full flowmask restriction is eliminated and thus
“IP Source” based policy routing can be implemented.
This is a desirable feature for large enterprises and service
providers because they can enable PBR by interface
leading to a more granular control on their resources.
PFC2 can store twice the capacity of ACL and QoS
policing entries, compared to PFC.
PFC2 is also a key component for doubling the
forwarding performance to 30 Mpps and, unlike the PFC
which is optional for Supervisor 1A, it ships with all
Supervisor Engine 2 modules. Although flows aren’t
cached for forwarding frames, NetFlow Tables are still
created for accounting purposes. While the FIB is used for
forwarding traffic, a NetFlow cache is maintained on the
PFC2 and NetFlow Data is exported as flows are aged
out. NetFlow tables are also used for forwarding TCP
intercept flows. As many different customers use the
infrastructure owned by service providers for application
and web hosting, the NetFlow data can be exported for
reporting and billing customers based on usage to help
deliver Cisco Service Level Agreements.
The addition of the PFC to the Supervisor Engine 1A or a
PFC2 with Supervisor Engine 2 provides granular per-port
recognition and classification of different types of traffic,
and enables admission control to manage which
applications are granted access to the network. Once all
traffic flows have been properly classified, both PFC and
PFC2 mark the packet priority with either Layer 3
(Differentiated Services or IP Precedence) or Layer 2
(802.1p or ISL) prioritization techniques. Each traffic flow
can then be optionally rate-limited, or policed, according
to predefined policies. Traffic exceeding this transmission
limit can either be dropped or marked down to a lower
priority by the policy feature card.
Furthermore, either policy feature card enables the ability
to intelligently load-balance traffic in server switching
complexes. The PFC works in conjunction with an
external LocalDirector engine, which calculates the
appropriate destination server via the load-balancing
algorithm according to destination addresses or Layer 4
port information. The PFC then caches this traffic flow,
enabling intelligent load-balanced server switching at rates
of 15 Mpps with Supervisor 1A. This technique is known
as accelerated server load-balancing (ASLB). Please see the
“Policy Feature Card for the Catalyst 6500 Series of
Switches” data sheet for more detailed information. The
ASLB feature is not supported on Supervisor Engine 2.
Supervisor Engine 1A supports another feature called
IOS-SLB in the native IOS mode. This feature integrates
much of the Local Director functionality into the switch,
thereby providing a single chassis solution with integrated
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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load-balancing capability. The feature will also be
supported on Supervisor Engine 2. Please refer to the
release notes of Supervisor IOS images for details
pertaining to this feature.
Intelligent Services
Enhanced Control Plane Performance
While Supervisor Engine 1A ships with both MSFC2 and
MSFC as configurable options, Supervisor 2 only ships
with MSFC2 as a configurable option. In addition to
supporting all the features provided in MSFC, the MSFC2
offers many new features that provide enhancements for
scaling large networks. The addition of an MSFC2 or an
MSFC enables full multiprotocol routing support for
enterprise and service provider networks.
The new MSFC2 offers enhanced scalability via a 4 times
increase in control plane and software switching
performance over that of MSFC. This translates into a
significant performance enhancement for all applications,
such as IOS-SLB, that use the software switching path to
switch the first packet in the flow, as is done with
Supervisor Engine 1A.
Both MSFC2 and MSFC support a wide range of routed
protocols, such as IP, International Packet Exchange (IPX)
and IP multicast traffic with additional support for
AppleTalk, DECnet, and VINES. Network managers can
also deploy any routing protocol as necessary to scale
intranet or interdomain networks. Both MSFC2 and
MSFC ship with 128 MB DRAM in default configuration,
with MSFC2 also supporting ECC DRAM options of 256
MB and 512 MB for Internet-sized route tables.
Supported routing protocols include: Open Shortest Path
First (OSPF), Interior Gateway Routing Protocol (IGRP),
Enhanced IGRP (EIGRP), Routing Information Protocol
(RIP), RIP II, Border Gateway Protocol 4 (BGP4),
Intermediate System to Intermediate System (IS-IS), IPX
RIP or EIGRP, AppleTalk Routing Table Maintenance
Protocol (RTMP) or EIGRP, DECnet Phase IV.
Both MSFC2 and MSFC also provide a wide range of
software services to enable scalable, end-to-end multicast
traffic, security, and extra QoS mechanisms in addition to
those provided by the PFC. For example, both MSFC2
and MSFC provide support for the Protocol Independent
Multicast (PIM) routing protocol including PIM sparse,
dense, sparse/dense modes, as well as granular security
access control lists. In addition, both support the
Resource Reservation Protocol (RSVP), which allows for
the creation of end-to-end QoS “tunnels” that guarantee
and reserve specific bandwidth rates throughout a
network. Network-wide visibility and management is
ensured through various traffic accounting and NetFlow
data export mechanisms. MSFC2 also supports up to
1000 terminated virtual LANs (VLANs), a fourfold
increase over MSFC, thereby allowing scalability in large
enterprise or service provider networks. Please see the
respective data sheets at the following URL for more
details: http://www.cisco.com/warp/public/cc/pd/si/casi/
ca6000/prodlit/index.shtml.
Modular Uplink Ports Provide Bandwidth
Scalability and Redundancy
Supervisor Engine 1A and 2 each support two modular
Gigabit Ethernet uplink ports for increased cost
effectiveness and flexibility. Both ports support flexible
GBICs and are available in single mode and multimode
fiber options. For increased scalability, both ports will
support Cisco Gigabit EtherChannel® and multimodule
channeling (when combined with ports from different line
cards) providing links up to 16 Gbps full duplex for
high-speed link connectivity.
Both supervisor engines provide dedicated hardware
queues to each of the Gigabit Ethernet ports on the
module for prioritized delivery of voice and other
mission-critical traffic. Two receive and three transmit
hardware queues provide separate wire-speed paths for
delivery of traffic marked with different priorities. One
queue in each direction is dedicated to strict, high-priority
traffic, while the other remaining queue(s) each support
Weighted Random Early Detection (WRED) drop
thresholds to minimize network congestion. In addition,
the two transmit hardware queues supporting WRED
each provide Weighted Round Robin (WRR) traffic
scheduling to ensure fair bandwidth allocation and queue
draining between the two dedicated paths.
Industry-Leading Software ServicesThe Catalyst 6500 Series Supervisor Engines are designed
to support industry-leading functionality based on Cisco
IOS software, with features for scalability, bandwidth
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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management, security services, network resiliency, and
manageability. For enhanced modularity and flexibility,
the Catalyst 6500 Series supports two software options.
A customer may deploy Catalyst Software on the
supervisor with a separate Cisco IOS image on the MSFC
or MSFC2, if operating in Layer 3 configuration. They
may also run a Cisco IOS® image that provides a single
interface for Layer 2, 3, and 4 configuration. Distributed
forwarding is only supported in Cisco IOS and not in
Catalyst Software.
Both Catalyst OS and Cisco IOS offer most of the same
features. Some features currently not supported in Cisco
IOS may be phased in during the next few releases. More
specific information can be found in the release notes for
both. Some of the highlighted features of both software
options are listed below, but release notes overwrite
information shown in the following tables.
Please note that the Catalyst Software refers to version 6.x
and Cisco IOS here is referring to 12.1(5c) EX Cisco IOS.
The hybrid mode(CatOS on the Supervisor Engines and
IOS on the MSFC) will be supported via 12.1(3) E and the
release notes should be used for details. Please note that
the 12.1(5) version will be supported with the release of
linecards supporting distributed forwarding. Please note
that this version will require the Supervisor Engine 2 with
256 MB DRAM option.
Note: The letter M under the software image implies that it
requires an MSFC/MSFC2. The letter P under the software
image column implies that it requires a PFC/PFC2.
Scalability
Features SupportedCatalyst Software5.x/6.x Cisco IOS
• Scalable wire-speed Layer 3 switching support for IP and IPX, withadditional support for AppleTalk, DECnet, and Vines with optional MSFC/MSFC2 and PFC on Supervisor 1A and MSFC2 on Supervisor Engine 2(includes PFC2)
Yes Yes
• Fast EtherChannel and Gigabit EtherChannel technologies with PortAggregation Protocol (PAgP)
Yes Yes
• Policy server, Virtual Management Policy Server (VMPS) – Client Yes Yes
• Policy server, Virtual Management Policy Server (VMPS) – Server Yes No
• Private VLANs Yes Yes
• Dynamic VLANs Yes Future
• Inter-Switch Link (ISL) Trunking Protocol Yes Yes
• DTP Yes Yes
• IEEE 802.1Q VLAN Trunking Yes Yes
• IEEE 802.1Q Tunneling Yes Future
• Jumbo Frame support for Gigabit Ethernet – Layer 2 Yes Yes
• Jumbo Frame support for Gigabit Ethernet – Layer 3 Yes, M Yes
• 4000 VLANs Yes Future
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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Load Management
Security Services
Network Resiliency
Features SupportedCatalyst Software5.x/6.x Cisco IOS
• Protocol filtering Yes Yes
• Broadcast suppression Yes Yes
• Link-load-balancing Yes Yes
• IGMP snooping Yes Yes
• Layer 3 RGMP Yes, M Yes
• Cisco Group Management Protocol (CGMP) Yes Yes
• Generic Address Resolution Protocol (GARP) Multicast RegistrationProtocol (GMRP)
Yes No
• Policing based on IP/IPX/MAC ACLs Yes Yes
• Bandwidth Management – WRR Yes Yes
• Congestion Management – WRED Yes Yes
• QoS and ACLs applied in hardware via PFC2 Yes, P Yes
• Priority Queue Support Yes Yes
• QoS Classification – IP COS, IP Precedence, TOS, DSCP Yes, P Yes
• QoS Policing (Microflow and aggregate) Yes, P Yes
Features SupportedCatalyst Software5.x/6.x Cisco IOS
• Spanning Tree Root Guard Yes Yes
• SSH Yes Yes
• Port security by Media Access Control (MAC) address Yes No
• Terminal Access Controller Access Control System (TACACS+) – AAA Yes Yes
• Remote Access Dial-In User Service (RADIUS) – AAA Yes Yes
• IP permit list Yes Yes
• Traps and syslog messages sent on security violations Yes Yes
• NetFlow data export Yes, P Yes
• MD5 route authentication Yes Yes
• Access control lists – Route Based Yes, M Yes
• Access control lists – VLAN Based Yes, P Yes
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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Features SupportedCatalyst Software5.x/6.x Cisco IOS
• Redundant Supervisor Engines Yes Yes
• Synchronized Layer 2 protocol states providing stateful failover(1-3 second failover)
Yes No
• Hitless Software Upgrade (HA Versioning) Yes No
• Runtime Layer 3 Config Sync Yes, M No
• Dual active routers in a redundantly configured chassis Yes, M No
• Enhanced High System Availability (EHSA) No Yes
• Support for Switch Fabric Module with Supervisor Engine 2 Yes Yes
• Support for Redundant Switch Fabric Module with Supervisor Engine 2 Yes Yes
• ECC DRAM on Supervisor Engine 2 Yes Yes
• Spanning-Tree Protocol (802.1d) Yes Yes
• PVST+ Yes Yes
• Multi Instance Spanning Tree Protocol (MISTP) Yes 802.1S Future
• Hot Standby Routing Protocol (HSRP) –External Yes, M Yes
• HSRP –Internal Yes, M No
• PortFast: Spanning-Tree Protocol (STP) enhancement Yes Yes
• UplinkFast –STP enhancement Yes Yes
• Backbone Fast Convergence: STP enhancement Yes Yes
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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Manageability
Features SupportedCatalyst Software5.x/6.x Cisco IOS
• Cisco Discovery Protocol (CDP) Yes Yes
• Simple Network Management Protocol (SNMP) agent Yes Yes
• SNMPv2c agent Yes Yes
• SNMPv3 Yes No
• Remote Monitoring (RMON) agent (RFC 1757) Yes Yes
• RMON2 Support (RFC 2021) Yes Yes
• Common Open Policy Server (COPS) Yes No
• RSVP+ Yes No
• Switched Port Analyzer (SPAN) Yes Yes
• SPAN from multiple source ports Yes Yes
• Remote SPAN (RSPAN) via trunks Yes, P Future
• Syslog support Yes Yes
• Domain Name System (DNS) Yes Yes
• Network Time Protocol (NTP) Yes Yes
• IP Traceroute Yes Yes
• L2 Traceroute Yes No
• Switch TopN ports report Yes No
• Bridge Management Information Base (MIB) (RFC 1493) Yes Yes
• IF-MIB (RFC 1573) Yes Yes
• MIB II (RFC 1213) Yes Yes
• Cisco Stack-MIB Yes Partial
• Cisco COPS-Client-MIB Yes No
• Cisco STP-Extensions-MIB Yes Yes
• Cisco Switch-Engine-MIB Yes Future
• Cisco UDLDP-MIB Yes No
• Cisco VLAN-BRIDGE-MIB Yes Yes
• Cisco VLAN-Membership-MIB Yes Yes
• Cisco VMPS-MIB Yes No
• Cisco VTP-MIB Yes Yes
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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Additional/Miscellaneous Features
High-Availability OptionsCatalyst 6500 Series switches support dual Supervisor
configurations. In the event of a Supervisor failure,
high-availability switchover transfers switch control to the
redundant Supervisor in less than 3 seconds for
mission-critical applications requiring maximum network
availability. It is important to note that when using
redundancy, both Supervisors must have the same hardware
configuration. The switches do not support Supervisor
Engine 1A and Supervisor Engine 2 deployed in the same
chassis for redundancy. The same applies to the MSFC
options. In redundant configurations, standby Supervisors
can also be hot-swapped for easier manageability.
Synchronized protocol states are maintained on the
redundant Supervisor Engine which allows for a stateful
failover in less than 3 seconds in the event of a failure.
A new feature, the Hitless Software Upgrade, allows
customers to upgrade software on the Catalyst 6500
switch without taking the switch out of service. This is
especially useful in e-commerce and Web-hosting
applications with mission-critical traffic, in which even a
short outage can prove expensive. Please refer to the
software release notes to verify the software versions that
support the hitless software upgrade.
In a Catalyst 6500 series, the Supervisor Engine 2 offers
another level of redundancy as it has connections to the
bus as well as the crossbar fabric. If the switch fabric
module fails in a nonredundant configuration, it reverts to
the bus so that traffic can continue to flow. Bandwidth is
reduced from 256 Gbps to 32 Gbps, however. This
scenario only applies to fabric-enabled cards that have a
single serial connection to the switch fabric module.
Fabric-enabled cards with dual serial connections to the
switch fabric do not support a connection to the bus. For
more information on fabric-enabled Gigabit Ethernet
cards, refer to: http://www.cisco.com/go/6000/.
A Cisco 6500 chassis can be configured with dual switch
fabric modules for even greater fabric redundancy. In
addition, a software feature in release 6.1 allows
customers to choose whether they would like to use this
feature. The new fabric-enabled cards with a single serial
• IOS HTTP Server Yes No
• Embedded Cisco View Yes No
Features SupportedCatalyst Software5.x/6.x Cisco IOS
Features SupportedCatalyst Software5.x/6.x Cisco IOS
• ASLB Yes No
• IOS SLB No Yes
• Voice Features; Inline Power, VVID, CDP extensions Yes Future
• WCCP v2 Yes Yes
• WCCP v2 with Layer 2 extensions Yes Yes
• IP multicast routing Yes Yes
• IP mobility Yes, M Yes
• Local proxy ARP Yes, M Yes
• UDLD Yes Yes
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
Page 9 of 14
connection to the bus also allow this level of redundancy
because they provide connections to the bus as well as the
switch fabric module (SFM). In redundant mode, one of
the SFMs is in a standby mode. Only one SFM is required
in a chassis to attain the full 256-Gb capacity. The SFM
provides 16 Gbps bandwidth to each line card slot in both
6slot and 9-slot chassis.
Supervisor Engine 2 also offers many other options to
scale the performance of Catalyst 6500 Series products. In
two configurations, it ships with ECC DRAM that
enhances the platform’s high availability by correcting
single-bit parity errors. This helps the system avoid
reboots that can lead to network outage. Network
managers demand higher availability and sophisticated
management options to reduce downtime in
mission-critical applications. With shrinking availability
of workforce trained in IT management skills, it becomes
even more important to incorporate intelligent services
and features into the platform. Supervisor Engine 2 also
incorporates enhancements such as a tertiary cache,
enhanced memory performance, and single console port
usable for both MSFC2 and Supervisor Engine 2 for easier
manageability. Both Supervisor Engine 2 and Supervisor
1A communicate with the linecards via an Ethernet
Out-of-Band Channel (EOBC).
Both Supervisor Engines 1A and 2, when configured in
Layer 3 configuration (with MSFC and MSFC2
respectively), support Hot Standby Routing Protocol
(HSRP). This enables fail-over between primary and
secondary routing engines. In a redundant configuration,
one of the supervisors is in a standby mode whereas both
MSFC cards are active. HSRP can be configured to allow
for load sharing between the two routers by distributing
the incoming traffic load, while still providing the same
level of redundancy and high availability. Both MSFC and
MSFC2 support configuration sync via Cisco IOS
Software Release 12.1(3)E, so the module on the standby
Supervisor can be configured for an automatic update,
providing ease of management.
The Supervisor Engines also provide support for Fast
EtherChannel and Gigabit EtherChannel, also in order to
provide increased availability for data-center and
backbone implementations. If one port in the group fails,
connectivity is maintained and traffic is load-balanced
across the remaining ports.
Like all Catalyst 6500 Series elements, the Supervisor
Engine 1A and 2 are field-replaceable units for fast service-
ability. For the Supervisor Engine 2, the MSFC2 will also be
a field-replaceable unit. For Supervisor Engine 1A, MSFC2
is field replaceable, only if there is an existing MSFC.
Both Catalyst Software and Supervisor IOS software
support PortFast, BackboneFast, and UplinkFast,
providing fast Convergence, after a Spanning Tree
topology change, as well as load-balancing between
redundant links Spanning Tree instances can also be
supported via VLAN to prevent loops in the bridge
topology and to provide faster network convergence in
the event of a VLAN reconfiguration. A new feature,
Multi Instance Spanning Tree Protocol (MISTP), is
supported via Catalyst OS version 6.1. It allows up to 16
instances of Spanning Tree per switch, where several
VLANs can share the same instance. This improves
convergence times of large, flat Layer 2 networks and
offers flexibility in network designs.
Please refer Catalyst OS and Cisco IOS release notes for
specific information on which high availability feature is
supported in each respective software type.
Powerful Management OptionsThe Catalyst 6500 Series Supervisor Engines deliver a
comprehensive set of management tools to provide the
required visibility and control in the network. Managed
with CiscoWorks2000, Catalyst family switches can be
configured and managed to deliver end-to-end device,
VLAN, traffic, and policy management. Coupled with
CiscoWorks2000, Cisco Resource Manager is a
Web-based management tool offering: automated
inventory collection, software deployment, easy tracking
of network changes, views into device availability, and
quick isolation of error conditions.
Support for local or remote, out-of-band management is
delivered through a terminal or modem attached to the
console/auxiliary interface. This interface can be shared
between the Supervisor Engine 2 and the MSFC2. Remote
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in-band management is available via SNMP, Telnet client,
Bootstrap Protocol (BOOTP), and Trivial File Transfer
Protocol (TFTP).
Support for the RSPAN feature allows traffic from
multiple distributed hosts and switches to be aggregated
and directed to a remotely located switch via trunk links,
to enable centralized management and monitoring.
The Supervisor Engines 1A and 2 support a single slot for
an optional PCMCIA Flash memory card to store
Catalyst software images for backup and easy software
upgrades. Supervisor Engine 2 also incorporates many
other enhancements such as a tertiary cache, enhanced
memory performance, and single console port usable for
both MSFC2 and Supervisor Engine 2 for ease of
management.
Specifications
Part Number Description Application
WS-X6K-SUP1A-2GE Supervisor Engine 1A for Catalyst 6500 Series,two Gigabit Ethernet uplinks, enhanced QoS,supports MSFC, MSFC2, and PFC
Premier wiring closets with Layer 2 forwarding
Supervisor Engine 1A for Catalyst 6500 Series,two Gigabit Ethernet uplinks, enhanced QoS, PFC
Premier wiring closets closets with enhancedQoS, for congestion avoidance and trafficscheduling, with Layer 2 forwarding
WS-X6K-S1A-MSFC2 Supervisor Engine 1A for Catalyst 6500 Series,two Gigabit Ethernet uplinks, enhanced QoS,supports MSFC2 and PFC
Distribution and Backbone applications forsupporting wire-speed IP, IPX, and IP multicastwith multiprotocol support for AppleTalk,DECnet, and VINES. Large backbone requiringIS-IS or BGP4 or interdomain routing withsupport for Internet-sized route tables
WS-X6K-S2-PFC2 Supervisor Engine 2 for Catalyst 6500 Series, twoGigabit Ethernet uplinks, fabric enabled, supportsfabric-enabled GE modules, enhanced QoS,Standard PFC2, supports MSFC2
Server farms, high-density Premier AVVID wiringcloset, and high-end distribution requiringenhanced performance and services
WS-X6K-S2-MSFC2 Supervisor Engine 2 for Catalyst 6500 Series, twoGigabit Ethernet uplinks, fabric enabled, supportsfabric-enabled GE modules, Enhanced QoS,PFC2, MSFC2
High performance and backbone, distributionand Gigabit Ethernet core (backbone)
WS-X6K-S2U-MSFC2 Supervisor Engine 2 for Catalyst 6500 Series, twoGigabit Ethernet uplinks, fabric enabled, supportsfabric-enabled GE modules. Enhanced QoS,PFC2, MSFC2. Required for Cisco IOS onSupervisor Engine 2
High-end distribution and Gigabit Ethernet core(backbone). Large Route table size(>150K routes),High End Server Farms utilizing distributedforwarding, andy switches implementing CiscoIOS
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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Miscellaneous
Supervisor 1A Supervisor 2
Options
Onboard DRAM 64 MB 128 MB ECC DRAM
Onboard Flash 16 MB 16 MB Bootflash
2 MB programmable Flash
Cache 16 K primary instruction cache
16 K data cache
256 K secondary cache
16 K primary instruction cache
16 K data cache
256 K secondary cache
1 MB tertiary cache
Optional PCMCIA Flash Card 16 to 20 MB 16 to 20 MB
CPU 150-MHz R4700 RISC processor 250-MHz RM7000 RISC processor
Supervisor Engine Status LED
Orange Module is booting
Running diagnostics
Minor temperature threshold exceeded
Same as Supervisor 1A
Green All diagnostics pass
Module is operational
Same as Supervisor 1A
Red Failed diagnostics
Major temperature threshold exceeded
Module not operational
Same as Supervisor 1A
Environmental Status LED
Green All chassis environmental monitors okay Same as Supervisor 1A
Orange Power Supply Failure Same as Supervisor 1A
Red Over-temperature condition due to:
• Power supply fan failure
• Minor backplane temperature thresholdexceeded
• Redundant backplane clock failure
• Incompatible power supplies installed
Same as Supervisor 1A
Power Management
Green Sufficient power for all modules Same as Supervisor 1A
Orange Insufficient power for all modules Same as Supervisor 1A
PCMCIA LED Lights when PCMCIA device is accessed Same as Supervisor 1A
Link LEDs for Uplink Ports
Green Port is operational Same as Supervisor 1A
Orange Solid – software disabled
Flashing – disabled due to hardware failure
Same as Supervisor 1A
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
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Key Differences between PFC and PFC2
Key Differences between MSFC and MSFC2
PFC PFC2
Available as an option on Supervisor Engine 1A only Premounted on all Supervisor Engine 2 modules
Performs Layer 2/3/4 services based on a flow basedarchitecture
Required for Layer 2/3/4 services in a CEF-based architecture
Performs certain Cisco IOS features like PBR, standard andextended access lists, and reflexive ACLs in hardware
Performs certain Cisco IOS features such as PBR, unicast RPF,TCP intercept, standard and extended access lists, and reflexiveACLs in hardware plus incorporates significant performanceimprovements
Centralized forwarding mechanism based on a flow cachingmechanism
Distributed forwarding mechanism based on a DistributedCisco Express Forwarding (DCEF) architecture. Used for IPunicast and multicast traffic as well as Layer 2 forwarding.
MSFC MSFC2
170 Kbps software switching performance 650 Kbps+ software switching performance
128 MB DRAM in default configuration 128 MB ECC DRAM in default configuration; optional upgradeto 256 MB and 512 ECC DRAM
256 Terminated VLANs 1000 Terminated VLANs
Available on Supervisor Engine 1A only Available on Supervisor Engine 2 and Supervisor 1A
Cisco SystemsCopyright © 2001 Cisco Systems, Inc. All Rights Reserved.
Page 13 of 14
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All other trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other
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