Cisco CBS Series Specification sheet

Get To Know Your Switch
This chapter contains the following sections:
•Introduction, on page 1
•Rack Mounting Switch, on page 2
•Wall Mounting a Switch, on page 3
•Out-Of-Band Port, on page 5
•Stacking the Switches, on page 6
•Power over Ethernet Considerations, on page 8
•Front Panel, on page 10
•Configuring Switches, on page 12
•Restoring Factory Default Settings, on page 14
•Navigation, on page 15
Introduction
Thank you for purchasing the Cisco CBS Series Switch. The Cisco CBS Series Switches combine powerful
network performance and reliability with a complete suite of network features that you need for a solid business
network. These expandable Gigabit Ethernet switches, with Gigabit or 10-Gigabit uplinks, provide multiple
management options, rich security capabilities, and Layer-3 static routing features far beyond those of an
unmanaged or consumer-grade switch, at a lower cost than fully managed switches.
Before You Begin
Before you begin installing your device, ensure that the following items are available:
• RJ-45 Ethernet cables for connecting network devices. A category 6a and higher cable is required for
10G ports; a category 5e and higher cable is required for all other ports.
• Tools for installing the hardware.
• The rack-mount kit packed with the switch contains four rubber feet for desktop placement, and
two brackets and twelve screws for rackmounting.
• If the supplied screws are lost, use replacement screws in the following size:
• Diameter of the screw head: 6.9 mm
• Length of face of screw head to base of screw: 5.9 mm
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• Shaft diameter: 3.94 mm
To prevent airflow restriction, allow clearance around the ventilation openings
to be at least 3 inches (7.6 cm).
Warning
• A computer to manage the device either via the console port or via the web-based interface. for web
based interface the computer needs to support one of the following browsers:
• Microsoft Edge
• Firefox (version 82 or 81 or higher)
• Chrome (version 86 or 85 or higher)
• Safari over MAC (version 14.0 and higher)
Suitable for installation in information Technology Rooms in accordance with Article 645 of the national
Electric Code and NFPA 75.
Warning
Rack Mounting Switch
You can mount the switches on any standard size, 19-inch (about 48 cm) wide rack. The switch requires 1
rack unit (RU) of space, which is 1.75 inches (44.45 mm) high.
For stability, load the rack from the bottom to the top, with the heaviest devices on the bottom. A top-heavy
rack is likely to be unstable and might tip over.
Caution
To install the switch into a 19-inch standard chassis:
Step 1 Place one of the supplied brackets on the side of the switch so that the four holes of the brackets align to the screw holes,
and then use the four supplied screws to secure it.
Step 2 Repeat the previous step to attach the other bracket to the opposite side of the switch.
Step 3 After the brackets are securely attached, the switch is now ready to be installed into a standard 19-inch rack.
Use supplied brackets to rack mount the switch.
Note
Supplied rack mounting for switch models with front mounting position. The mounting ears do not sit flush
to the front panel.
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Get To Know Your Switch
Rack Mounting Switch

Supplied rack mounting for switch models with front mounting position. The mounting ears sit flush to the
front panel.
Wall Mounting a Switch
You can mount the switches on a wall, using wall studs or to a firmly attached plywood mounting backboard.
Read these instructions carefully before beginning installation. Failure to use the correct hardware or to follow
the correct procedures could result in a hazardous situation to people and damage to the system.
Caution
Do not wall-mount the switch with its front panel facing up. Following safety regulations, wallmount the
switch with its front panel facing down or to the side to prevent airflow restriction and to provide easier access
to the cables.
Caution
To wall-mount a 24-port switch using brackets:
Step 1 Attach a 19-inch bracket to one side of the switch.
Step 2 Repeat the previous step to attach the other bracket to the opposite side of the switch.
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Wall Mounting a Switch

Step 3 After the brackets are securely attached, mount the switch with the front panel facing down. Make sure that the switch
is attached securely to wall studs or to a firmly attached plywood-mounting backboard. Wall-mounting a 24-port switch.
Wall-mounting a 24-port
Wall Mount an 8 Port Switch
To wall-mount a 8-port switch using mounting screws, follow these steps:
Step 1 Locate the screw template. The template is used to align the mounting screw holes.
Step 2 Position the screw template so that the edge that is marked as CABLE SIDE ENTRY faces toward the floor. Make sure
that the switch is attached securely to wall studs or to a firmly attached plywoodmounting backboard.
Step 3 Peel the adhesive strip off the bottom of the screw template.
Step 4 Attach the screw template to the wall.
Step 5 Use a 0.144-inch (3.7 mm) or a #27 drill bit to drill a 1/2-inch (12.7 mm) hole in the two screw template slots.
Step 6 Insert two screws in the slots on the screw template, and tighten them until they touch the top of the screw template.
Installing the mounting screws on the wall
Figure 3 Installing the mounting screws on the wall
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Wall Mount an 8 Port Switch

Step 7 Remove the screw template from the wall.
Step 8 Place the switch onto the mounting screws, and slide it down until it locks in place.Wall-mounting an 8-port switch
Figure 4 Wall-mounting an 8-port switch
Out-Of-Band Port
The switch supports an Out-of-Band (OOB) port which is used for the management network. The out-of-band
and the in-band ports share the same IP routing table. Thus, the same subnet can not be used on both the
in-band and out-of-band interfaces.
The OOB port is assigned an MAC address which differs from the base MAC address and the in-band ports
addresses. This MAC address is used as the source MAC address in all frames sent by the switch on the OOB
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Out-Of-Band Port

port. The IP address assigned to this port cannot be assigned to the in-band ports at the same time. In addition,
it must not belong to any IP subnet configured at the in-band interfaces of the devices.
By default, the OOB port is configured with a default IP address 192.168.1.254. This default IP address is
used when no other address is assigned (dynamically or statically). This subnet is a reserved one and cannot
be assigned on the in-band interfaces.
Stacking the Switches
A stack can have multiple devices in it. Any 10G port of the switch can be used for stacking.
By default, the ports on the switch function as regular Ethernet ports, except if you configure them to do
stacking. You cannot mix the stack speeds between the switches or ports.
At least two ports must be chosen for stacking in a given switch" and those ports must be 10Gig speed. For
two switches or more to form a stack, they must be running the same version of the firmware. This is the more
reason SG series switches cannot be stacked with CBS series switches. CBS250 series switches do not have
stacking capabilities.
Some switches have their stack LEDs numbered 1, 2, 3, and 4 to indicate Active, Standby, and Member while
the others types use the system LED flashing behavior to describe the same thing.
Stack ports must have the same speed capability on the module or cable plug in.
Note
The switch can only be stacked without Mesh topology. The switches in the same stack are connected together
through their stack ports. Depending on the type of stack ports and the desired speed, you may need Cat6a
Ethernet cables or Cisco approved modules or cables for the switches.
Stack Management
The Cisco Business switches have a couple of different stacking modes and you can stack different models.
Also you need to note what feature may of may not be available in different stacking modes (native or hybrid).
• Native Stacking - The switch is part of a stack in which all of the units are of the same type.
• Hybrid Stacking – The switch is part of a stack that can consist of either mixed types of CBS350 devices.
Feature Support on Hybrid Mode
The feature set of the CBS350 SKUs with 10G network ports and the feature CBS350 SKUs with 10G uplink
ports are nearly identical. However, there are a few differences in feature support and table sizes between the
2 “sub-types”. The Cisco Business switches hybrid stack mode will support the lower denominator for these
features/tables The following table lists the feature differences between the 2 sub-types and the setting applied
in hybrid mode:
Hybrid mode works in any combination of stacking albeit reduced performance, MAC table size for example
can be reduced; but switches of the same model number (same PID) can take advantage of native stacking
mode. Some switches with different PID can stack in native mode as well, other combinations, however, can
only stack in hybrid mode.
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Stacking the Switches

In general, except for the CBS350-48XT-4X, all CBS350 switches that support stacking and have designated
uplink ports in their PID can stack natively among themselves, and those that do not have uplink ports,
including the CBS350-48T-4X can stack, among themselves, in native mode as well. The hybrid mode staking
comes into play only when mixing these two blocks, uplink supporting devices and non-uplink supporting
devices. So. knowing the exact PID of a given switch is so crucial when it comes to stacking mode
determination. The CBS350-48T-4X, although has 4X at the end of the PID that should designate this as
supporting an uplink, it is not the case, this 4X designation in this switch does not indicate uplink, instead,
they are network port (downlink port) as are the other ports in the switch.
Changing stacking mode from Native to Hybrid will force a switch to reboot and most of its settings in its
startup configuration will reset to default; in the other hand, changing the stacking mode from Hybrid to Native
will force the unit to reboot, but the settings will not reset back to default.
Hybrid stackCBS350 “10G network port
SKUs”
CBS350 “10G uplink port
SKUs”
Feature
Not SupportedSupportedNot SupportedOOB port
Per SKU and port type
behavior
Per SKU and port type
behavior
Per SKU and port type
behavior
Green Settings (Short
reach and Energy Detect)
16K32K or 64K16KMAC table size
2K4K2KNumber of Multicast
groups
1K- reserved2K- reserved1K- reservedNumber of ACEs
supported
9927392992Total number of IP entries
1K – reserved8K – reserved1K – reservedARP table size
106200106Max number of IPv6
interfaces
400 seconds630 seconds400 secondsMax MAC table aging
Not supportedSupportedNot supportedIPv6 Manual Tunnel/ 6tp4
tunnel/ ISATAP routing
tunnel
Per SKU typeNot supportedSupported on specific
SKUs
PoE support
0320Default number of VLAN
Mapping entries
On VLAN 1On OOBOn VLAN 1Default IP address
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Feature Support on Hybrid Mode

Power over Ethernet Considerations
Some switches support PoE while others do not. The switch models that support PoE have a P in their model
number, such as: CBSxxx-xxP-xx. If your switch is one of the Power over Ethernet (PoE) models, consider
the following power requirement.
The switch is to be connected only to PoE networks without routing to the outside plant.
Warning
Table 1: Switches with Power Over Ethernet
PoE PSE SupportPoE PD Chipset TypeDescriptionSKU Name
AF/AT1*69208M8-Port 2.5G PoE Managed
Switch
CBS350-8MGP-2X
AF/AT1*69208M8-Port 2.5G PoE
Stackable Managed
Switch
CBS350-8MP-2X
AF/AT/60W1*69208M + 1*6920424-Port 2.5G PoE
Stackable Managed
Switch
CBS350-24MGP-4X
AF/AT/60W3 * TPS238812-Port 5G PoE Stackable
Managed Switch
CBS350-12NP-4X
AF/AT/60W4* TPS238824-Port 5G PoE Stackable
Managed Switch
CBS350-24NGP-4X
AF/AT
/60W
7* TPS238848-Port 5G PoE Stackable
Managed Switch
CBS350-48NGP-4X
AF/ATTPS23888-Port Gigabit PoE
Managed Switch
CBS350-8P-2G
AF/ATTPS23888-Port Gigabit PoE
Managed Switch
CBS350-8P-E-2G
AF/ATTPS23888-Port Gigabit PoE
Managed Switch
CBS350-8FP-2G
AF/ATTPS23888-Port Gigabit PoE
Managed Switch
CBS350-8FP-E-2G
AF/AT2*TPS238816-Port Gigabit PoE
Managed Switch
CBS350-16P-2G
AF/AT2*TPS238816-Port Gigabit PoE
Managed Switch
CBS350-16P-E-2G
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Power over Ethernet Considerations

PoE PSE SupportPoE PD Chipset TypeDescriptionSKU Name
AF/AT2*TPS238816-Port Gigabit PoE
Managed Switch
CBS350-16FP-2G
AF/AT3*TPS238824-Port Gigabit PoE
Managed Switch
CBS350-24P-4G
AF/AT3*TPS238824-Port Gigabit PoE
Managed Switch
CBS350-24FP-4G
AF/AT6*TPS238824-Port Gigabit PoE
Managed Switch
CBS350-48P-4G
AF/AT6*TPS238848-Port Gigabit PoE
Managed Switch
CBS350-48FP-4G
AF/AT3*TPS238824-Port Gigabit PoE
Stackable Managed
Switch with 10G Uplinks
CBS350-24P-4X
AF/AT3*TPS238824-Port Gigabit PoE
Stackable Managed
Switch with 10G Uplinks
CBS350-24P-4X
AF/AT6*TPS238848-Port Gigabit PoE
Stackable Managed
Switch with 10G Uplinks
CBS350-24FP-4X
AF/AT6*TPS238848-Port Gigabit PoE
Stackable Managed
Switch with 10G Uplinks
CBS350-48P-4X
AF/AT6*TPS238848-Port Gigabit PoE
Stackable Managed
Switch with 10G Uplinks
CBS350-48FP-4X
Consider the following when connecting a PoE switch. The PoE switches are PSE (Power Sourcing Equipment)
that are capable of supplying DC power to attaching powered devices (PD). These devices include VoIP
phones, IP cameras, and wireless access points. The PoE switches can detect and supply power to pre-standard
legacy PoE PD. Due to the PoE legacy support, it is possible that a PoE switch acting as a PSE may mistakenly
detect and supply power to an attaching PSE, including other PoE switches, as a legacy PD. Even though PoE
switches are PSE, and as such should be powered by AC, they could be powered up as a legacy PD by another
PSE due to false detection. When this happens, the PoE switch may not operate properly and may not be able
to properly supply power to its attaching PDs.
To prevent false detection, you should disable PoE on the ports on the PoE switches that are used to connect
to PSEs. You should also first power up a PSE device before connecting it to a PoE switch. When a device
is being falsely detected as a PD, you should disconnect the device from the PoE port and power recycle the
device with AC power before reconnecting its PoE ports.
Caution
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Power over Ethernet Considerations

Front Panel
The ports, LEDs, and Reset button are located on the front panel of the switch, as well as the following
components:
Cisco Business 350 Series Model
Models may differ within the CBS 350 series and this is just a representation of a model within the series.
Note
• There are 2 device types with different console interface:
1. Console port with RJ-45 and mini-USB connector if both are connected the Mini USB has precedence
over the RJ-45
2. RJ-45 connector only type of console.
The console interface connects a serial cable to a computer serial port so that it can be configured using
a terminal emulation program or mini USB cable (depending on connector).
• USB Port—The USB port connects the switch to a USB device so that you can save and restore the
configuration files, firmware images, and SYSLOG files through the connected USB device. The USB
port supports the FAT32 file system.
• RJ-45 Ethernet Ports—The RJ-45 Ethernet ports connect network devices, such as computers, printers,
and access points, to the switch.
• SFP+ Port (if present)—The small form-factor pluggable plus (SFP+) are connection points for modules
so that the switch can link to other switches. These ports are also commonly referred to as mini 10GigaBit
Interface Converter ports. The term SFP+ is used in this guide.
• The SFP+ ports (if present) are compatible with the following Cisco SFP 1G optical modules
MGBSX1, MGBLX1, MGBLH1, MGBT1, as well as other brands.
• The SFP+ ports are compatible with the following Cisco SFP 1G optical modules MGBSX1,
MGBLX1, MGBLH1, MGBT1, as well as other brands.
• The Cisco SFP+ Copper Cable modules that are supported in the Cisco switches are:
SFP-H10GB-CU1M, SFP-H10GB-CU3M, and SFP-H10GB-CU5M.
• The LEDs of the corresponding RJ-45 port flash green to respond to the SFP interface traffic.
• Small form-factor pluggable (SFP) ports are connection points for modules, so the switch can link to
other switches.
• Some SFP interfaces are shared with one other RJ-45 and SFP+ port, called a combo port. When the SFP
is active, the adjacent RJ-45 port is disabled.
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Get To Know Your Switch
Front Panel