Cisco Nexus 7000
and Nexus 7700 Series switches have two slots that are available for supervisor
modules.
Redundancy is
achieved by having both supervisor slots populated.
Table 1-6 describes
different options and specifications of the supervisor modules.
Key Topic
Table 1-6
Nexus 7000 and Nexus 7700 Supervisor Modules Comparison
Nexus 7700
Supervisor 2E
|
Nexus 7000
Supervisor 2E
|
Nexus 7000
Supervisor 2
|
Nexus 7000
Supervisor 1
|
|
CPU
|
Dual Quad-Core
Xeon
|
Dual Quad-Core
Xeon
|
Quad-Core Xeon
|
Dual-Core Xeon
|
Speed (GHz)
|
2.13
|
2.13
|
2.13
|
1.66
|
Memory (GB)
|
32
|
32
|
12
|
8
|
Flash memory
|
USB
|
USB
|
USB
|
Compact Flash
|
Fiber Channel
over Ethernet (FCoE) on F2 module
|
Yes
|
Yes
|
Yes
|
No
|
CPU Share
|
Yes
|
Yes
|
Yes
|
No
|
Virtual Device
Contexts (VDC)
|
8+1 admin VDC
|
8+1 admin VDC
|
4+1 admin VDC
|
4
|
Cisco Fabric
Extender (FEX) Support
|
64 FEX/3072
ports
|
64 FEX/3072
ports
|
32 FEX/1536
ports
|
32 FEX/1536
ports
|
Connectivity
Management Processor (CMP)
|
Not supported
|
Not supported
|
Not supported
|
Supported
|
Cisco Nexus 7000 Series Supervisor 1 Module
The Cisco Nexus
7000 supervisor 1 module shown in Figure
1-26 is the first-generation supervisor module for the Nexus 7000. As
shown in Table 1-6, the operating system runs on a dedicated dual-core Xeon
processor; dual supervisor engines run in active-standby mode with stateful
switch over (SSO) and configuration synchronization between both supervisors.
There are dual redundant Ethernet out-of-band channels (EOBC) to each I/O and fabric modules to provide resiliency for the communication between control and line card processors. An embedded packet analyzer reduces the need for a dedicated packet analyzer to provide faster resolution for control plane problems. The USB ports allow access to USB flash memory devices to software image loading and recovery.
There are dual redundant Ethernet out-of-band channels (EOBC) to each I/O and fabric modules to provide resiliency for the communication between control and line card processors. An embedded packet analyzer reduces the need for a dedicated packet analyzer to provide faster resolution for control plane problems. The USB ports allow access to USB flash memory devices to software image loading and recovery.
Figure 1-26 Cisco Nexus 7000 Supervisor 1 Module
The Connectivity
Management Processor (CMP) provides an independent remote system management and
monitoring capability. It removes the need for separate terminal server devices
for OOB management, and it offers complete visibility during the entire boot
process. It has the capability to initiate a complete system restart and
shutdown. Administrators must authenticate to get access to the system through
CMP, and it also allows access to supervisor logs and full console control on
the supervisor engine.
The Cisco Nexus
7000 supervisor 1 module incorporates highly advanced analysis and debugging
capabilities. The Power-on Self Test (POST) and Cisco Generic Online
Diagnostics (GOLD) provide proactive health monitoring both at startup and
during system operation. This is useful in detecting hardware faults. If a
fault is detected, corrective action can be taken to mitigate the fault and
reduce the risk of a network outage.
Cisco Nexus
7000 Series Supervisor 2 Module
The Cisco Nexus
7000 supervisor 2 module shown in Figure
1-27 is the next-generation supervisor module. As shown in Table 1-6,
it has a quad-core CPU and 12G of memory compared to the supervisor 1 module,
which has single-core CPU and 8G of memory. The supervisor 2E module is the
enhanced version of the supervisor 2 module with two quad-core CPUs and 32G of
memory.
Figure 1-27 Cisco Nexus 7000 Supervisor 2 Module
The supervisor 2 module and supervisor 2E module have more powerful CPUs, larger memory, and next-generation ASICs that together will result in improved performance, such as enhanced user experience, faster boot and switchover times, and a higher control plane scale, such as higher VDC and FEX.
Both the
supervisor 2 module and supervisor 2E module support FCoE; when you are
choosing the proper line card, they support CPU shares, which will enable you
to carve out CPU for higher priority VDCs. Sup2E supports 8+1 VDCs. Sup2 scale
is the same as Sup1; it will support 4+1 VDCs.
NOTE: You cannot mix Sup1 and Sup2 in the same chassis. Note that this will be a disruptive migration requiring removal of supervisor 1. Sup2 and Sup2E can be mixed for migration only. This will be a nondisruptive migration.
Cisco Nexus
7000 and Nexus 7700 Fabric Modules
The Nexus 7000
and Nexus 7700 fabric modules provide interconnection between line cards and
provide fabric channels to the supervisor modules. The Nexus 7000 has five
fabric modules, and the Nexus 7700 has six; adding fabric modules increases the
available bandwidth per I/O slot because all fabric modules are connected to all
slots. Figure 1-28 shows the
different fabric modules for the Nexus 7000 and Nexus 7700 products.
Figure 1-28 Cisco Nexus 7000 Fabric Module
In the case of Nexus 7000, when using Fabric Module 1, which is 46 Gbps, you can deliver a maximum of 230 Gbps per slot using five fabric modules. When using Fabric Module 2, which is 110 Gbps, you can deliver a maximum of 550 Gbps per slot. In Nexus 7700, by using Fabric Module 2, which is 220 Gbps per slot, you can deliver a maximum of 1.32 Tbps per slot.
All fabric
modules support load sharing, and the architecture supports lossless fabric
failover. In case of a failure or removal of one of the fabric modules, the
remaining fabric modules will load balance the remaining bandwidth to all the
remaining line cards.
Nexus 7000
supports virtual output queuing (VOQ) and credit-based arbitration to the
crossbar to increase performance. VOQ and credit-based arbitration allow fair
sharing of resources when a speed mismatch exists to avoid head-of-line (HOL)
blocking.
The Nexus 7000
implements a three-stage crossbar switch. Fabric stage 1 and fabric stage 3 are
implemented on the line card module, and stage 2 is implemented on the fabric
module. Figure 1-29 shows how these stages are connected to each
other. There are four connections from each fabric module to the line cards,
and each one of these connections is 55 Gbps. When populating the chassis with
six fabric modules, the total number of connections from the fabric cards to
each line card is 24. It provides an aggregate bandwidth of 1.32 Tbps per slot.
Figure 1-29 Cisco Nexus 7700 Crossbar Fabric
There are two
connections from each fabric module to the supervisor module. These connections
are also 55 Gbps. When all the fabric modules are installed, there are 12
connections from the switch fabric to the supervisor module, providing an
aggregate bandwidth of 275 Gbps.
NOTE: Cisco Nexus 7000 fabric 1 modules provide two 23Gbps traces to each
fabric module, providing 230 Gbps of switching capacity per I/O slot for a
fully loaded chassis. Each supervisor module has a single 23Gbps trace to each
fabric module.
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Thanks for sharing poe switches
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