Cisco Sg3008 Manual

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Smartport
This document describes the Smartports feature.
It contains the following topics:
•Overview
•What is a Smartport
•Smartport Types
•Smartport Macros
•Macro Failure and the Reset Operation
•How the Smartport Feature Works
•Auto Smartport
•Error Handling
•Default Configuration
•Relationships with Other Features and Backwards Compatibility
•Common Smartport Tasks
•Configuring Smartport Using The Web-based Interface
•Built-in Smartport Macros 
						

							Smartport
Overview
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Overview
The Smartport feature provides a convenient way to save and share common 
configurations. By applying the same Smartport macro to multiple interfaces, the 
interfaces share a common set of configurations. A Smartport macro is a script of 
CLI (Command Line Interface) commands 
A Smartport macro can be applied to an interface by the macro name, or by the 
Smartport type associated with the macro. Applying a Smartport macro by macro 
name can be done only through CLI. Refer to the CLI guide for details. 
There are two ways to apply a Smartport macro by Smartport type to an 
interface:
•Static Smartport—You manually assign a Smartport type to an interface. 
The result is the corresponding Smartport macro is applied to the interface.
•Auto Smartport—Auto Smartport waits for a device to be attached to the 
interface before applying a configuration. When a device is detected from 
an interface, the Smartport macro (if assigned) that corresponds to the 
Smartport type of the attaching device is automatically applied.
The Smartport feature consists of various components and works in conjunction 
with other features on the device. These components and features are described 
in the following sections:
•Smartport, Smartport types and Smartport macros, described in this 
section.
•Voice VLAN and Smartport, described in the Voic e VL AN section.
•LLDP/CDP for Smartport, described in the Configuring LLDP and 
Configuring CDP sections, respectively.
Additionally, typical work flows are described in the Common Smartport Tasks 
section. 
						

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What is a Smartport
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What is a Smartport
A Smartport is an interface to which a built-in (or user-defined) macro may be 
applied. These macros are designed to provide a means of quickly configuring the 
device to support the communication requirements and utilize the features of 
various types of network devices. The network access and QoS requirements 
vary if the interface is connected to an IP phone, a printer, or a router and/or 
Access Point (AP). 
Smartport Types
Smartport types refers to the types of devices attached, or to be attached to 
Smartports. The device supports the following Smartport types:
•Printer
•Desktop
•Guest
•Server
•Host
•IP Camera
•IP phone
•IP Phone+Desktop
•Switch
•Router
•Wireless Access Point
Smartport types are named so that they describe the type of device connected to 
an interface. Each Smartport type is associated with two Smartport macros. One 
macro, called the macro serves to apply the desired configuration. The other, 
called the anti-macro, serves to undo all configuration performed by the macro 
when that interface happens to become a different Smartport type. 
You can apply a Smartport macro by the following methods:
•The associated Smartport type. 
						

							Smartport
Smartport Types
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•Statically from a Smartport macro by name only from the CLI.
A Smartport macro can be applied by its Smartport type statically from CLI and 
GUI, and dynamically by Auto Smartport. Auto Smartport derives the Smartport 
types of the attached devices based on CDP capabilities, LLDP system 
capabilities, and/or LLDP-MED capabilities.
The following describes the relationship of Smartport types and Auto Smartport
Special Smartport Types
There are two special Smartport types; default and unknown. These two types 
are not associated with macros, but they exist to signify the state of the interface 
regarding Smar tport .
The following describe these special Smartport types:
•Default 
An interface that does not (yet) have a Smartport type assigned to it has the 
Default Smartport status.  Smartport Type Supported by Auto 
SmartportSupported by Auto 
Smartport by default
Unknown No No
Default No No
Printer No No
Desktop No No
Guest No No
Server No No
Host Yes No
IP camera No No
IP phone Yes Yes
IP phone desktop Yes Yes
Switch Yes Yes
Router Yes No
Wireless Access 
PointYe s Ye s 
						

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Smartport Macros
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If Auto Smartport assigns a Smartport type to an interface and the interface 
is not configured to be Auto Smartport Persistent, then its Smartport type is 
re-initialized to Default in the following cases:
-A link down/up operation is performed on the interface.
-The device is restarted.
-All devices attached to the interface have aged out, which is defined as 
the absence of CDP and/or LLDP advertisement from the device for a 
specified time period.
•Unknown 
If a Smartport macro is applied to an interface and an error occurs, the 
interface is assigned the Unknown status. In this case, the Smartport and 
Auto Smartport features do not function on the interface until you correct 
the error and applies the Reset action (performed in the Interface Settings 
pages) that resets the Smartport status.
See the workflow area in Common Smartport Tasks section for 
troubleshooting tips.
NOTEThroughout this section, the term “aged out” is used to describe the LLDP and CDP 
messages via their TTL. If Auto Smartport is enabled, and persistent status is 
disabled, and no more CDP or LLDP messages are received on the interface before 
both TTLs of the most recent CDP and LLDP packets decrease to 0, then the anti-
macro is run, and the Smartport type returns to default.
Smartport Macros
A Smartport macro is a script of CLI commands that configure an interface 
appropriately for a particular network device.
Smartport macros should not be confused with global macros. Global macros 
configure the device globally, however, the scope of a Smartport macro is limited 
to the interface on which it is applied.
The macro source may be found by running the show parser macro name 
[macro_name] command in privileged exec mode of the CLI or by clicking the 
View Macro Source button on the Smartport Type Settings page.
A macro and the corresponding anti-macro are paired together in association with 
each Smartport type. The macro applies the configuration and the anti-macro 
removes it . 
						

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Smartport Macros
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There are two types of Smartport macros:
•Built-In—These are macros provided by the system. One macro applies the 
configuration profile and the other removes it. The macro names of the built-
in Smartport macros and the Smartport type they are associated with as 
follows
-macro-name (for example: printer)
-no_macro-name (for example: no_printer)
•User-Defined—These are macros written by the users. See the CLI 
Reference Guide for more information about these. To associate a user 
defined macro to a Smartport type, its anti macro must be defined as well.
-smartport-type-name (for example: my_printer)
-no_smartport-type-name (for example: no_my_printer)
Smartport macros are bound to Smartport types in the Edit Smartport Type 
Setting page.
See Built-in Smartport Macros for a listing of the built-in Smartport macros for 
each device type.
Applying a Smartport Type to an Interface
When Smartport types are applied to interfaces, the Smartport types and 
configuration in the associated Smartport macros are saved in the Running 
Configuration File. If the administrator saves the Running Configuration File into the 
Startup Configuration File, the device applies the Smartport types and the 
Smartport macros to the interfaces after reboot as follows:
•If the Startup Configuration File does not specify a Smartport type for an 
interface, its Smartport type is set to Default.
•If the Startup Configuration File specifies a static Smartport type, the 
Smartport type of the interface is set to this static type.
•If the Startup Configuration File specifies a Smartport type that was 
dynamically assigned by Auto Smartport:
-If the Auto Smartport Global Operational state, the interface Auto 
Smartport state, and the Persistent Status are all Enable, the Smartport 
type is set to this dynamic type. 
						

							Smartport
Macro Failure and the Reset Operation
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-Else the corresponding anti-macro is applied and the interfaces status is 
set to Default.
Macro Failure and the Reset Operation
A Smartport macro might fail if there is a conflict between the existing 
configuration of the interface and a Smartport macro.
When a Smartport macro fails, a SYSLOG message containing the following 
parameters is sent:
•Port number
•Smartport type
•The line number of the failed CLI command in the macro
When a Smartport macro fails on an interface, the status of the interface is set to 
Unknown. The reason for the failure can be displayed in the Interface Settings 
page, Show Diagnostics popup. 
After the source of the problem is determined and the existing configuration or 
Smartport macro is corrected, you must perform a reset operation to reset the 
interface before it can be reapplied with a Smartport type (in the Interface 
Settings pages). See the workflow area in Common Smartport Tasks section for 
troubleshooting tips.
How the Smartport Feature Works
You can apply a Smartport macro to an interface by the macro name, or by the 
Smartport type associated with the macro. Applying a Smartport macro by macro 
name can be done only through the CLI, you should refer to the CLI guide for 
details.
Because support is provided for Smartport types which correspond to devices 
that do not allow themselves to be discovered via CDP and/or LLDP, these 
Smartport types must be statically assigned to the desired interfaces. This can be 
done by navigating to the Smartport Interface Settings page, selecting the radio 
button of the desired interface, and clicking Edit. Then, select the Smartport type 
you want to assign and adjust the parameters as necessary before clicking Apply. 
						

							Smartport
Auto Smartport
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There are two ways to apply a Smartport macro by Smartport type to an 
interface:
•Static Smartport
You manually assign a Smartport type to an interface. The corresponding 
Smartport macro is applied to the interface. You can manually assign a 
Smartport type to an interface from the Smartport Interface Settings Page.
•Auto Smartport
When a device is detected from an interface, the Smartport macro, if any, 
that corresponds to the Smartport type of the attaching device is 
automatically applied. Auto Smartport is enabled by default globally, and at 
the interface level.
In both cases, the associated anti-macro is run when the Smartport type is 
removed from the interface, and the anti-macro runs in exactly the same manner, 
removing all of the interface configuration.
Auto Smartport
In order for Auto Smartport to automatically assign Smartport types to interfaces, 
the Auto Smartport feature must be enabled globally and on the relevant 
interfaces which Auto Smartport should be allowed to configure. By default, Auto 
Smartport is enabled and allowed to configure all interfaces. The Smartport type 
assigned to each interface is determined by the CDP and LLDP packets received 
on the each interface respectively.
•If multiple devices are attached to an interface, a configuration profile that is 
appropriate for all of the devices is applied to the interface if possible. 
•If a device is aged out (no longer receiving advertisements from other 
devices), the interface configuration is changed according to its Persistent 
Status. If the Persistent Status is enabled, the interface configuration is 
retained. If not, the Smartport Type reverts to Default.
Enabling Auto Smartport
Auto Smartport can be enabled globally in the Properties page in the following 
ways: 
						

							Smartport
Auto Smartport
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•Enabled—This manually enables Auto Smartport and places it into 
operation immediately.
•Enable by Auto Voice VLAN—This enables Auto Smartport to operate if 
Auto Voice VLAN is enabled and in operation. Enable by Auto Voice VLAN is 
the default.
NOTEIn addition to enabling Auto Smartport globally, you must enable Auto Smartport at 
the desired interface as well. By default, Auto Smartport is enabled at all the 
interfaces.
See Voic e VL AN for more information on enabling Auto Voice VLAN
Identifying Smartport Type
If Auto Smartport is globally enabled (in the Properties page), and at an interface 
(in the Interface Settings page), the device applies a Smartport macro to the 
interface based on the Smartport type of the attaching device. Auto Smartport 
derives the Smartport types of attaching devices based on the CDP and/or LLDP 
the devices advertise.
If, for example, an IP phone is attached to a port, it transmits CDP or LLDP packets 
that advertise its capabilities. After reception of these CDP and/or LLDP packets, 
the device derives the appropriate Smartport type for phone and applies the 
corresponding Smartport macro to the interface where the IP phone attaches.
Unless Persistent Auto Smartport is enabled on an interface, the Smartport type 
and resulting configuration applied by Auto Smartport is removed if the attaching 
device(s) ages out, links down, reboots, or conflicting capabilities are received. 
Aging out times are determined by the absence of CDP and/or LLDP 
advertisements from the device for a specified time period.
Using CDP/LLDP Information to Identify Smartport Types
The device detects the type of device attached to the port, based on the CDP/
LLDP capabilities. 
This mapping is shown in the following tables:
CDP Capabilities Mapping to Smartport Type
Capability Name CDP Bit Smartport Type
Router 0x01 Router
TB Bridge 0x02 Wireless Access Point 
						

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Auto Smartport
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SR Bridge 0x04 Ignore
Switch 0x08 Switch
Host 0x10 Host
IGMP conditional filtering 0x20 Ignore
Repeater 0x40 Ignore
VoIP Phone 0x80 ip_phone
Remotely-Managed Device 0x100 Ignore
CAST Phone Port 0x200 Ignore
Two-Port MAC Relay 0x400 Ignore
LLDP Capabilities Mapping to Smartport Type
Capability Name LLDP Bit Smartport Type
Other 1 Ignore
Repeater IETF RFC 2108 2 Ignore
MAC Bridge IEEE Std. 802.1D 3 Switch
WLAN Access Point IEEE Std. 802.11 
MIB4 Wireless Access 
Point
Router IETF RFC 1812 5 Router
Telephone IETF RFC 4293 6 ip_phone
DOCSIS cable device IETF RFC 4639 
and IETF RFC 45467Ignore
Station Only IETF RFC 4293 8 Host
C-VLAN Component of a VLAN Bridge 
IEEE Std. 802.1Q9Switch
S-VLAN Component of a VLAN Bridge 
IEEE Std. 802.1Q10 Switch
Two-port MAC Relay (TPMR) IEEE Std. 
802.1Q11 Ignore CDP Capabilities Mapping to Smartport Type (Continued)
Capability Name CDP Bit Smartport Type