7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
7210 SERVICE ACCESS SWITCH
7210 SAS OS Interface Configuration Guide
7210 SAS-M7210 SAS-T
7210 SAS-X7210 SAS-R6
7210 SAS-R127210 SAS-Mxp
7210 SAS-S7210 SAS-Sx
Release 9.0.R8
3HE11485AAHTQZZA
Issue: 01
September 2017
Nokia — Proprietary and confidential.
Use pursuant to applicable agreements.
Nokia is a registered trademark of Nokia Corporation. Other products and company
names mentioned herein may be trademarks or tradenames of their respective
owners.
The information presented is subject to change without notice. No responsibility is
assumed for inaccuracies contained herein.
Contains proprietary/trade secret information which is the property of Nokia and must
not be made available to, or copied or used by anyone outside Nokia without its
written authorization. Not to be used or disclosed except in accordance with
applicable agreements.
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 9
List of Figures
Page 107210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
About This Guide
All the variants of 7210 SAS-M, 7210 SAS-T, 7210 SAS-Mxp, and 7210 SAS-Sx can be
configured in two modes, that is in network mode and in access-uplink mode. In network mode
configuration 7210 SAS-M, 7210 SAS-T, and 7210 SAS-Mxp uses IP/MPLS to provide service
transport. In access-uplink mode configuration 7210 SAS-M and 7210 SAS-T uses Ethernet QinQ
technology to provide service transport. The mode can be selected by configuring the BOF
appropriately.
The 7210 SAS-Mxp and 7210 SAS-Sx platforms is configured only in Network Mode. The BOF
does not allow the user to configure bof-uplink mode. By default, the mode is set to Network
mode. In network mode configuration 7210 SAS-Mxp and 7210 SAS-Sx platforms uses IP/MPLS
to provide service transport.
Preface
The 7210 SAS-Sx can be operated in standalone mode and satellite mode. The user guide provides
features and CLI commands supported in 7210 SAS-Sx standalone mode of operations. Only the
Basics System Configuration User Guide contains information on how to boot the 7210 SAS-Sx in
satellite mode of operation.
This guide also presents examples to configure and implement various tests.
Notes:
•This user guide is applicable to all 7210 SAS-M, 7210 SAS-T, 7210 SAS-R6, 7210 SASR12, 7210 SAS-X, 7210 SAS-Mxp, and 7210 SAS-Sx platforms, unless specified
otherwise.
•In either mode, it is expected that the user will only configure the required CLI parameters
appropriate for the mode that the user intends to use. Unless otherwise noted, most of the
configuration is similar in both the network mode and Access uplink mode.
•Only 7210 SAS-M and 7210 SAS-T supports access-uplink mode. 7210 SAS-Mxp and
7210 SAS-Sx platforms support only Network mode. 7210 SAS-X, 7210 SAS-R6, and
7210 SAS-R12 does not support access-uplink mode. 7210 SAS-X, 7210 SAS-R6, and
7210 SAS-R12 supports only MPLS uplinks and implicitly operates in network mode.
•On 7210 SAS devices, not all the CLI commands are supported on all the platforms and in
all the modes. In many cases, the CLI commands are mentioned explicitly in this
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 11
Preface
Audience
document. In other cases, it is implied and easy to know the CLIs that are not supported on
a particular platform.
This document is organized into functional chapters and provides concepts and descriptions of the
implementation flow, as well as Command Line Interface (CLI) syntax and command usage.
This manual is intended for network administrators who are responsible for configuring the 7210
SAS-Series routers. It is assumed that the network administrators have an understanding of
networking principles and configurations, routing processes, and protocols and standards,
including:
•CLI concepts
•MDA, and port configuration
•QoS policies
•Services
Page 127210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
List of Technical Publications
The 7210 SAS-M, T, X, R6, R12, Mxp, S, Sx OS documentation set is composed of the following
books:
•7210 SAS-M, T, X, R6, R12, Mxp, S, Sx OS Basic System Configuration Guide
This guide describes basic system configurations and operations.
•7210 SAS-M, T, X, R6, R12, Mxp, S, Sx OS System Management Guide
This guide describes system security and access configurations as well as event logging
and accounting logs.
Table 1 lists the tasks necessary to provision cards, Media Dependent Adapters (MDAs), and
ports.
This guide is presented in an overall logical configuration flow. Each section describes a software
area and provides CLI syntax and command usage to configure parameters for a functional area.
Table 1: Configuration Process
AreaTaskChapter
ProvisioningChassis slots and
cards
MDAsMDAs on page 24
PortsPorts on page 30
ReferenceList of IEEE, IETF,
and other proprietary
entities.
Chassis Slots and Cards on
page 19
Standards and Protocol
Support on page 371
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 15
In This Chapter
Page 167210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
In This Chapter
This chapter provides information about configuring chassis slots, cards, and ports.
Topics in this chapter include:
•Configuration Overview on page 18
−Chassis Slots and Cards on page 19
−MDAs on page 24
7210 SAS-SERIES INTERFACES
−Digital Diagnostics Monitoring on page 26
−Ports on page 30
−Port Types on page 30
−LAG on page 45
− 802.1x Network Access Control on page 105
−MTU Configuration Guidelines on page 114
−Deploying Pre-provisioned Components for 7210 SAS-M, 7210 SAS-X, 7210 SAS-T,
7210 SAS-Mxp, 7210 SAS-Sx/S 1/10GE, and 7210 SAS-Sx 10/100GE. on page 115
•Configuration Notes on page 189
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 17
In This Chapter
Configuration Overview
NOTE: This document uses the term preprovisioning in the context of preparing or
preconfiguring entities such as chassis slots, Line cards (for example, SF/CPM - Switch Fabric and
Control Plane Module, IMMs - Integrated Media Modules), and media dependent adapters
(MDAs), ports, and interfaces, prior to initialization. These entities can be installed but not
enabled. When the entity is in a no shutdown state (administratively enabled), then the entity is
considered to be provisioned.
The 7210 SAS-M and its variants (that is, 7210 SAS-M 24F, 7210 SAS-M 24F 2XFP, 7210 SASM 24F 2XFP ETR), is a platform with a fixed port configuration and an additional expansion slot
that accepts supported MDAs. 7210 software inherits the concept for CPM, IOM and MDA from
7x50 to represent the hardware logically. The software creates 2 logical cards, to represent the
CPM and IOM and these are pre-provisioned on bootup. The IOM card, is modelled with 2 MDAs.
One of the MDA, a non-removable logical entity, represents the fixed ports available on the
platform, and it is pre-provisioned on bootup. The second MDA, represents the physical
removable MDA that can be plugged into the available expansion slot and it must be provisioned
by the user depending on the MDA they plan to use (see below for more information on
provisioning MDA for the expansion slot on 7210 SAS-M). Ports and interfaces can also be preprovisioned.
The 7210 SAS-X, 7210 SAS-T, 7210 SAS-Mxp, 7210 SAS-Sx/S 1/10GE, and 7210 SAS-Sx 10/
100 GE and its variants, are platforms with a fixed port configuration, and no expansion slots.
7210 software inherits the concept of CPM, IOM and MDA from 7x50 to represent the hardware
logically. These are fixed and are not removable. The software creates 2 logical cards, to represent
the CPM and IOM and these are pre-provisioned on bootup. The IOM card, is modelled with a
single MDA, a logical entity to represent the fixed ports on the system. This MDA is autoprovisioned on bootup and user does not need to provision them. Ports and interfaces can also be
pre-provisioned.
The 7210 SAS-R6 is a chassis-based platforms that have 6 IMM slots that can accept media cards
used for service delivery and 2 CPM slots that provide control-plane redundancy. The chassis slots
must be provisioned to accept a specific line card and set the relevant configurations before the
equipment is actually installed. The pre-provisioning ability allows you to plan your
configurations as well as monitor and manage your router hardware inventory. Ports and interfaces
can also be pre-provisioned. When the functionality is needed, the card(s) can be inserted into the
appropriate chassis slots when required.
The 7210 SAS-R12 is a chassis-based platforms that have 12 IMM slots that can accept media
cards used for service delivery and 2 CPM slots that provide control-plane redundancy. The
chassis slots must be provisioned to accept a specific line card and set the relevant configurations
before the equipment is actually installed. The pre-provisioning ability allows you to plan your
configurations as well as monitor and manage your router hardware inventory. Ports and interfaces
can also be pre-provisioned. When the functionality is needed, the card(s) can be inserted into the
appropriate chassis slots when required.
Page 187210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
Chassis Slots and Cards
The 7210 SAS-M and its variants are platforms which has a set of fixed ports and supports one
expansion slot. Software pre-provisions the cards on bootup. The expansion slot is represented as
a MDA and supported MDAs can be plugged into the expansion slot. The list of MDAs supported
on 7210 SAS-M is available in the 7210 SAS release notes.
The following display output of show card command lists the cards auto-provisioned on 7210
SAS-M chassis:
Sample output for 7210 SAS-M:
A:7210# show card state
Interface Configuration
===============================================================================
Card State
===============================================================================
Slot/ Provisioned Equipped Admin Operational Num Num Comments
Id Type Type State State Ports MDA
------------------------------------------------------------------------------1 iom-sas iom-sas up up 2
1/1 m24-1gb+2-10gb m24-1gb+2-10gb up up 24
1/2 m4-ds1-ces m4-ds1-ces up up 4
A sfm-sas sfm-sas up up Active
The 7210 SAS-T, 7210 SAS-X, 7210 SAS-Mxp, and 7210 SAS-Sx/S 1/10GE are platforms which
has a set of fixed port. Software pre-provisions the cards on bootup. No expansion slots are
supported on these platforms.
The following display output of show card command lists the cards auto-provisioned on 7210
SAS-X, 7210 SAS-T, 7210 SAS-Mxp, and 7210 SAS-Sx/S 1/10GE chassis:
The following display output of show card command lists the cards auto-provisioned on 7210
SAS-X chassis:
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 19
Chassis Slots and Cards
Slot Provisioned Equipped Admin Operational
Card-type Card-type State State
------------------------------------------------------------------------------1 iom-sas iom-sas up up
A sfm-sas sfm-sas up up/active
===============================================================================
A:7210-SAS-X>show#
The following display output of show card command lists the cards auto-provisioned on 7210
SAS-T chassis:
Sample output for 7210 SAS-T:
A:7210SAST>show# card
===============================================================================
Card Summary
===============================================================================
Slot Provisioned Type Admin Operational Comments
Equipped Type (if different) State State
------------------------------------------------------------------------------1 iom-sas up up
A sfm-sas up up/active
===============================================================================
A:7210SAST>show#
The following display output of show card command lists the cards auto-provisioned on 7210
SAS-Mxp chassis:
Sample output for 7210 SAS-Mxp:
*A:sim_dutc>show# card state
===============================================================================
Card State
===============================================================================
Slot/ Provisioned Type Admin Operational Num Num Comments
Id Equipped Type (if different) State State Ports MDA
------------------------------------------------------------------------------1 iom-sas up up 2
1/1 m22-sfp+2-tx+4-sfpp up up 24
A sfm-sas up up Active
===============================================================================
*A:sim_dutc>show#
The following display output of show card command lists the cards auto-provisioned on 7210
SAS-Sx/S 1/10GE 48-port 1GE variant chassis:
Sample output for 7210 SAS-Sx/S 1/10GE:
Page 207210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
Interface Configuration
*A:7210SAS>show# card state
===============================================================================
Card State
===============================================================================
Slot/ Provisioned Type Admin Operational Num Num Comments
Id Equipped Type (if different) State State Ports MDA
------------------------------------------------------------------------------1 iom-sas up up 2
1/1 s48-t4-sfpp up up 52
A sfm-sas up up Active
===============================================================================
*A:7210SAS>show#
Sample output for 7210 SAS-Sx 10/100 GE:
*A:hw_sass_duth# show card state
===============================================================================
Card State
===============================================================================
Slot/ Provisioned Type Admin Operational Num Num Comments
Id Equipped Type (if different) State State Ports MDA
------------------------------------------------------------------------------1 up up 1
1/1 s48-t+4-sfpp up up 52
A sfm-sas up up Active
===============================================================================
*A:hw_sass_duth#
The 7210 SAS-R6 is a chassis based platform with 6 IMM slots and 2 CPM slots. On a chassis
based platform the slots must be provisioned. To pre-provision a chassis slot, the line card type
must be specified. System administrators or network operators can enter card type information for
each slot, allowing a range of card types in particular slots. From the range of card types, a card
and accompanying MDAs (if any) are specified. When a card is installed in a slot and enabled, the
system verifies that the installed card type matches the allowed card type. If the parameters do not
match, the card remains offline. A pre-provisioned slot can remain empty without conflicting with
populated slots. 7210 SAS-R6 supports only CPM and IMMs. It does not support any physical
removable MDAs. Software uses logical MDAs internally to represent the ports on the IMMs and
the MDA type is auto-provisioned by software when the IMMs are provisioned. Please check the
latest release notes for a list of supported card types (that is, CPM and IMMs). For more
information on installation of cards, see the 7210 SAS-R6 Installation Guides.
The 7210 SAS-R12 is a chassis based platform with 12 IMM slots and 2 CPM slots. On a chassis
based platform the slots must be provisioned. To pre-provision a chassis slot, the line card type
must be specified. System administrators or network operators can enter card type information for
each slot, allowing a range of card types in particular slots. From the range of card types, a card
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 21
Chassis Slots and Cards
and accompanying MDAs (if any) are specified. When a card is installed in a slot and enabled, the
system verifies that the installed card type matches the allowed card type. If the parameters do not
match, the card remains offline. A pre-provisioned slot can remain empty without conflicting with
populated slots. 7210 SAS-R12 supports only CPM and IMMs. It does not support any physical
removable MDAs. Software uses logical MDAs internally to represent the ports on the IMMs and
the MDA type is auto-provisioned by software when the IMMs are provisioned. Please check the
latest release notes for a list of supported card types (that is, CPM and IMMs). For more
information on installation of cards, see the 7210 SAS-R12 Installation Guide.
NOTE:
•On 7210 SAS-R6, a mix of IMMv1 (identified as imm-sas-r) and IMMv2 (identified as
imm-sas-r-b) cannot be used simultaneously in the same node. In other words, all the slots
need to be populated with either IMMv1 or IMMv2, a mix is not supported. Additionally,
the user must configure up front the type of IMMs they intend to populate in the node so
that appropriate resources can be allocated on system bootup. Please see the command
config>system>chassis> allow-imm-family in the Basics System Configuration User
Guide.
•On 7210 SAS-R12, IMMv1 cards are not supported. Either IMMv2 (identified as IMM-b)
or IMM-c cards can be used. For more information, see the Basics System Configuration
User Guide.
The following show command samples is used to display the cards provisioned and equipped in
the chassis:
Sample output for 7210 SAS-R6:
*A:sasr_dutb>show# card
===============================================================================
Card Summary
===============================================================================
Slot Provisioned Type Admin Operational Comments
Equipped Type (if different) State State
------------------------------------------------------------------------------1 imm-sas-10sfp+1xfp up up
2 imm-sas-10sfp+1xfp up provisioned
(not equipped)
3 imm-sas-10sfp up up
4 (not provisioned) up unprovisioned
imm-sas-2xfp
5 imm-sas-2xfp up up
6 imm-sas-2xfp up up
A cpm-sf-sas-R6 up up/active
B cpm-sf-sas-R6 up up/standby
===============================================================================
*A:sasr_dutb>show#
Page 227210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
Interface Configuration
Sample output for 7210 SAS-R12:
A:A6144909484>show# card
===============================================================================
Card Summary
===============================================================================
Slot Provisioned Type Admin Operational Comments
Equipped Type (if different) State State
------------------------------------------------------------------------------8 (not provisioned) up unprovisioned
imm-sas-b-4sfp+
A cpm-sf-sas-R12 up up/active
B cpm-sf-sas-R12 up up/standby
===============================================================================
A:A6144909484>show#
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 23
Provisioning of MDA on 7210 SAS-M
MDAs
The 7210 SAS-R6, R12, 7210 SAS-X, 7210 SAS-T, 7210 SAS-Mxp, 7210 SAS-Sx/S 1/10GE and
7210 SAS-Sx 10/100 GE platforms, as explained in the previous section, do not support any
physical removable MDAs. Software uses the concept of MDA internally (as a logical entity) to
represent the ports and the MDA type is either auto-provisioned on bootup or auto-provisioned
automatically based on the configured IMM type.
On 7210 SAS-M, as explained in the previous section, in addition to the fixed ports, a expansion
slot is available. It is represented as a physical MDA and needs to be provisioned. The section
below talks about provisioning of MDAs and is applicable only to those platforms where physical
MDAs are supported.
A chassis slot and card type must be specified and provisioned before an MDA can be
preprovisioned. An MDA is provisioned when a type designated from the allowed MDA types is
inserted. A preprovisioned MDA slot can remain empty without conflicting with populated slots.
Once installed and enabled, the system verifies that the installed MDA type matches the
configured parameters. If the parameters do not match, the MDA remains offline. An MDA is
provisioned when a type designated from the allowed MDA type is inserted. A preprovisioned
MDA slot can remain empty without conflicting with the populated slots.
•
Provisioning of MDA on 7210 SAS-M
Provisioning guidelines for MDA used with 7210 SAS-M:
•The device rejects the insertion of a CES card if the slot is provisioned for a 2* 10G MDA
and vice versa.
•If a 2*10G MDA provisioned, it ensures that the BOF parameter "no-service-ports" is
configured to specify two ethernet ports.
•Only on 7210 SAS-M 24F variant, the no-service-ports BOF parameter is not available for
use.
•Change of value assigned to 'use-expansion-card-type' BOF parameter, requires a reboot
so that a different MDA type can be used.
Provisioning 2 x 10G MDA and 4 x T1/E1 CES MDA on 7210 SAS-M
For 7210 SAS-M devices currently deployed or new deployments, to insert 2*10 MDA perform
the following steps:
1. Configure the BOF parameter "use-expansion-card-type" to m2-xfp. This provisions the system to expect a 2 x 10G MDA for use in the expansion slot.
Page 247210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
Interface Configuration
2. Configure the BOF parameter "no-service-ports", if using a 7210 SAS-M 24F 2XFP and 7210
SAS-M 24F 2XFP ETR variants.
3. Re-boot the device.
4. The above steps are required for first-time use of 2 x 10G MDA or when changing the MDA
type in use. It is not needed, if a MDA is being replaced with a MDA of the same type.
In 7210 devices using 2 x 10G MDA, to insert CES MDA perform the following steps:
1. Configure the BOF parameter "use-expansion-card-type" to m4-ds1-ces. This will provision
the system to expect a 4 x T1/E1 CES MDA for use in the expansion slot.
2. Configure the BOF parameter "no-service-ports" to default, if using a 7210 SAS-M 24F 2XFP
and 7210 SAS-M 24F 2XFP ETR variants.
3. Re-boot the device.
4. The above steps are required when changing the MDA type in use. It is not needed, if a MDA
is being replaced with a MDA of the same type.
NOTE: Insertion and removal of the CES MDA at any point of time into the system is supported,
if the BOF parameter configuration is set to default.
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 25
Provisioning of MDA on 7210 SAS-M
Digital Diagnostics Monitoring
Some Nokia SFP and XFP transponders have Digital Diagnostics Monitoring (DDM) capability.
With DDM the transceiver module maintains information about its working status in device
registers, such as:
•Temperature
•Supply voltage
•Transmit (TX) bias current
•TX output power
•Received (RX) optical power
The transceiver is also programmed with warning and alarm thresholds for low and high
conditions that can generate system events. These thresholds are programmed by the transceiver
manufacturer.
There are no CLI commands required for DDM operations, however, the show>port port-iddetail command displays DDM information in the Transceiver Digital Diagnostics Monitoring
output section.
The Tx and Rx power displayed in the DDM output are average optical power in dBm.
DDM information is populated into the router’s MIBs, so the DDM data can be retrieved by
Network Management using SNMP. Also, RMON threshold monitoring can be configured for the
DDM MIB variables to set custom event thresholds if the factory-programmed thresholds are not
at the desired levels.
The following are potential uses of the DDM data:
•Optics degradation monitoring — With the information returned by the DDM-capable
optics module, degradation in optical performance can be monitored and trigger events
based on custom or the factory-programmed warning and alarm thresholds.
•Link/router fault isolation — With the information returned by the DDM-capable optics
module, any optical problem affecting a port can be quickly identified or eliminated as the
potential problem source.
Page 267210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
Supported real-time DDM features are summarized in Table 2.
Table 2: Real-Time DDM Information
Interface Configuration
ParameterUser UnitsSFP/XFP
Units
SFPXFP
TemperatureCelsiusCSupportedSupported
Supply
VoltsµVSupportedSupported
Voltage
TX Bias
mAµASupportedSupported
Current
TX Output
Power
RX Received
Optical
Power4
AUX1parameter dependent
dBm (converted from
mW)
dBm (converted from
dBm) (Avg Rx Power or
OMA)
mWSupportedSupported
mWSupportedSupported
-Not supportedSupported
(embedded in transceiver)
AUX2parameter dependent
-Not supportedSupported
(embedded in transceiver)
The factory-programmed DDM alarms and warnings that are supported are summarized in
Table 3.
7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration GuidePage 27
Provisioning of MDA on 7210 SAS-M
Table 3: DDM Alarms and Warnings
ParameterSFP/XFP UnitsSFPXFPRequired?
Temperature
- High Alarm
- Low Alarm
- High Warning
- Low Warning
Supply Voltage
- High Alarm
- Low Alarm
- High Warning
- Low Warning
TX Bias Current
- High Alarm
- Low Alarm
- High Warning
- Low Warning
TX Output Power
- High Alarm
- Low Alarm
- High Warning
- Low Warning
CYesYesYes
µVYesYesYes
µAYesYesYes
mWYesYesYes
RX Optical Power
mWYesYesYes
- High Alarm
- Low Alarm
- High Warning
- Low Warning
AUX1
- High Alarm
- Low Alarm
- High Warning
parameter
dependent
(embedded in
transceiver)
NoYesYes
- Low Warning
AUX2
- High Alarm
- Low Alarm
- High Warning
parameter
dependent
(embedded in
transceiver)
NoYesYes
- Low Warning
Page 287210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
Nokia SFPs and XFPs
The availability of the DDM real-time information and warning or alarm status is based on the
transceiver. It may or may not indicate if DDM is supported, although some Nokia SFPs support
DDM. Non-DDM and DDM-supported SFPs are distinguished by a specific ICS value.
For Nokia SFPs that do not indicate DDM support in the ICS value, DDM data is available
although the accuracy of the information has not been validated or verified.
For non-Nokia transceivers, DDM information may be displayed, but Alcatel-Lucent is not
responsible for formatting, accuracy, etc.
Statistics Collection
The DDM information and warnings/alarms are collected at one minute intervals, so the minimum
resolution for any DDM events when correlating with other system events is one minute.
Interface Configuration
Note that in the Transceiver Digital Diagnostic Monitoring section of the show portport-iddetail
command output:
•If the present measured value is higher than the either or both High Alarm, High Warn
thresholds; an exclamation mark “!” displays along with the threshold value.
•If the present measured value is lower than the either or both Low Alarm, Low Warn
thresholds; an exclamation mark “!” displays along with the threshold value.
A:Dut-A# show port 2/1/6 detail
.........
===============================================================================
Transceiver Digital Diagnostic Monitoring (DDM), Internally Calibrated
===============================================================================
Value High Alarm High Warn Low Warn Low Alarm