Introduction


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This document provides information about the IOS XE software release for the Cisco NCS 4206 and Cisco NCS 4216 beginning with Cisco IOS XE Release 3.18SP.

Overview of Cisco NCS 4206 and NCS 4216

Cisco NCS 4206

The Cisco NCS 4206 is a fully-featured aggregation platform designed for the cost-effective delivery of converged mobile and business services. With shallow depth, low power consumption, and an extended temperature range, this compact 3-rack-unit (RU) chassis provides high service scale, full redundancy, and flexible hardware configuration.

The Cisco NCS 4206 expands the Cisco service provider product portfolio by providing a rich and scalable feature set of Layer 2 VPN (L2VPN) and Layer 3 VPN (L3VPN) services in a compact package. It also supports a variety of software features, including Carrier Ethernet features, Timing over Packet, and pseudowire.

For more information on the Cisco NCS 4206 Chassis, see the Cisco NCS 4206 Hardware Installation Guide.

Cisco NCS 4216

The Cisco NCS 4216 is a seven-rack (7RU) unit chassis that belongs to the Cisco NCS 4200 family of chassis. This chassis complements Cisco’s offerings for IP RAN solutions for the GSM, UMTS, LTE and CDMA. Given it’s form-factor, interface types and Gigabit Ethernet density the Cisco NCS 4216 can also be positioned as a Carrier Ethernet aggregation platform.

The Cisco NCS 4216 is a cost optimized, fully redundant, centralized forwarding, extended temperature, and flexible pre-aggregation chassis.

For more information about the Cisco NCS 4216 Chassis, see the Cisco NCS 4216 Hardware Installation Guide.

NCS 4216 14RU

The Cisco NCS 4216 F2B is a 14-rack unit router that belongs to the Cisco NCS 4200 family of routers. This router complements Cisco’s offerings for IP RAN solutions for the GSM, UMTS, LTE, and CDMA. Given its form-factor, interface types, and Gigabit Ethernet density the Cisco NCS 4216 14RU can also be positioned as a Carrier Ethernet aggregation platform.

The Cisco NCS 4216 14RU is a cost optimized, fully redundant, centralized forwarding, extended temperature, and flexible pre-aggregation router.

For more information about the Cisco NCS 4216 F2B Chassis, see the Cisco NCS 4216 F2B Hardware Installation Guide.

NCS 4216 14RU

The Cisco NCS 4216 14RU is a 14-rack unit router that belongs to the Cisco NCS 4200 family of routers. This router complements Cisco’s offerings for IP RAN solutions for the GSM, UMTS, LTE, and CDMA. Given its form-factor, interface types and GigabitEthernet density the Cisco NCS 4216 14RU can also be positioned as a Carrier Ethernet aggregation platform.

The Cisco NCS 4216 14RU is a cost optimized, fully redundant, centralized forwarding, extended temperature, and flexible pre-aggregation router.

For more information about the Cisco NCS 4216 14RU chassis, see the Cisco NCS 4216 14RU Hardware Installation Guide.

Feature Navigator

You can use Cisco Feature Navigator to find information about feature, platform, and software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on cisco.com is not required.

Hardware Supported

The following sections list the hardware supported for Cisco NCS 4206 and Cisco NCS 4216 chassis.

Cisco NCS 4206 Supported Interface Modules

Supported Interface Modules


Note

If the license feature service-offload enable command is configured, then the NCS4200-1T8LR-PS IM is not supported in the router for RSP3.


Note
There are certain restrictions in using the interface modules on different slots in the chassis. Contact Cisco Sales/Support for the valid combinations.

Note
FAN OIR is applicable every time the IM based fan speed profile is switched to NCS4200-1H-PK= and NCS4200-2Q-P interface modules. Even though the IMs remain in the Out-of-Service state, they are still considered as present in the chassis.
Table 1. NCS420X-RSP Supported Interface Modules and Part Numbers

RSP Module

Supported Interface Modules

Part Numbers

Slot

NCS420X-RSP

8-port 10 Gigabit Ethernet Interface Module (8X10GE)

NCS4200-8T-PS

All

1-port 100 Gigabit Ethernet Interface Module (1X100GE)

NCS4200-1H-PK=

4 and 5

2-port 40 Gigabit Ethernet QSFP Interface Module (2X40GE)

NCS4200-2Q-P

4 and 5

8/16-port 1 Gigabit Ethernet (SFP/SFP) + 1-port 10 Gigabit Ethernet (SFP+) / 2-port 1 Gigabit Ethernet (CSFP) Interface Module

NCS4200-1T16G-PS

0,3,4, and 5

1-port OC-192 Interface module or 8-port Low Rate Interface Module

NCS4200-1T8S-10CS

2,3,4, and 5

NCS 4200 1-Port OC-192 or 8-Port Low Rate CEM 20G Bandwidth Interface Module

NCS4200-1T8S-20CS

2,3,4, and 51

48-port T1/E1 CEM Interface Module

NCS4200-48T1E1-CE

All

48-port T3/E3 CEM Interface Module

NCS4200-48T3E3-CE

All
2-port 100 Gigabit Ethernet (QSFP) Interface Module (2X100GE)2

NCS4200-2H-PQ

4,5

1-port OC483/ STM-16 or 4-port OC-12/OC-3 / STM-1/STM-4 + 12-port T1/E1 + 4-Port T3/E3 CEM Interface Module

NCS4200-3GMS

2,3,4, and 5
1 These slots are supported on 10G or 20G mode.
2 IM supports only one port of 100G with RSP3 as QSFP28 on Port 0 in both slots 4 and 5.
3 If OC48 is enabled, then the remaining 3 ports are disabled.
Table 2. NCS420X-RSP-128 Supported Interface Modules and Part Numbers

RSP Module

Supported Interface Modules

Part Numbers

Slot

NCS420X-RSP

SFP Combo IM—8-port Gigabit Ethernet (8X1GE) + 1-port 10 Gigabit Ethernet Interface Module (1X10GE)

NCS4200-1T8LR-PS

All

8-port T1/E1 CEM Interface Module

NCS4200-8E1T1-CE

All

1-port OC484/ STM-16 or 4-port OC-12/OC-3 / STM-1/STM-4 + 12-port T1/E1 + 4-Port T3/E3 CEM Interface Module

NCS4200-3GMS

2,3,4, and 5
4 If OC48 is enabled, then the remaining 3 ports are disabled.

Restrictions and Limitations


Note

The error message "PLATFORM-1-NOSPACE: SD bootflash : no space alarm assert" may occur in the following scenarios:

  • Any sector of SD Card gets corrupted

  • Improper shut down of router

  • power outage.

This issue is observed on platforms which use EXT2 file systems.

We recommend performing a reload of the router. As a result, above alarm will not be seen during the next reload due to FSCK(file systems check) execution.

However, If the error persists after a router reload, we recommend to format the bootflash or FSCK manually from IOS.

  • Embedded Packet Capture (EPC) is not supported on ASR 900NCS 4200 routers.

  • From the Cisco IOS XE 16.6.1 releases, In-Service Software Upgrade (ISSU) is not supported on the router to the latest releases. For more information on the compatible release versions, see ISSU Support Matrix.

  • ISSU is not supported between a Cisco IOS XE 3S release and the Cisco IOS XE Bengaluru 17.6.x release.

  • The port restriction on 1-port OC-192 or 8-port low rate CEM interface module is on port pair groups. If you have OC48 configured on a port, the possible port pair groups are 0–1, 2–3, 4–5, 6–7. If one of the ports within this port group is configured with OC48 rate, the other port cannot be used.

  • RS422 pinout works only on ports 0–7.

  • The ip cef accounting command is not supported on the router.

  • Configuration sync does not happen on the Standby RSP when the active RSP has Cisco Software Licensing configured, and the standby RSP has Smart Licensing configured on the router. If the active RSP has Smart Licensing configured, the state of the standby RSP is undetermined. The state could be pending or authorized as the sync between the RSP modules is not performed.

  • Evaluation mode feature licenses may not be available to use after disabling, and enabling the smart licensing on the RSP2 module. A reload of the router is required.

  • Ingress counters are not incremented for packets of the below format on the RSP3 module for the 10-Gigabit Ethernet interfaces, 100-Gigabit Ethernet interfaces, and 40-Gigabit Ethernet interfaces:

    Packet Format

    MAC header---->VLAN header---->Length/Type

    When these packets are received on the RSP3 module, the packets are not dropped, but the counters are not incremented.

  • T1 SAToP, T3 SAToP, and CT3 are supported on an UPSR ring only with local connect mode. Cross-connect configuration of T1, T3, and CT3 circuits to UPSR are not supported.

  • PTP is not supported when 8-port 10-Gigabit Ethernet interface module is in oversubscribed mode.

  • Port channel 61–64 is not supported in the 16.11.1a release. The range of configurable port channel interfaces has been limited to 60.

  • Effective with Cisco IOS XE Everest 16.6.1, the VPLS over Port-channel (PoCH) scale is reduced from 48 to 24 for Cisco ASR 903 RSP3 module.


    Note

    The PoCH scale for Cisco ASR 907 routers is 48.

  • The frame drops may occur for packets with packet size of less than 100 bytes, when there is a line rate of traffic over all 1G or 10G interfaces available in the system. This restriction is applicable only on RSP2 module, and is not applicable for RSP3 module.

  • One Ternary Content-Addressable Memory (TCAM) entry is utilized for Segment Routing Performance Measurement. This is required for the hardware timestamping to function.

  • While performing an auto upgrade of ROMMON, only primary partition is upgraded. Use the upgrade rom-mon filename command to upgrade the secondary partition of the ROMMON during the auto upgrade. However, the router can be reloaded during the next planned reload to complete the secondary ROMMON upgrade. This is applicable to ASR 903 and ASR 907 routers.

  • In the Cisco IOS XE 17.1.1 release, the EVPN EVI type is VLAN-based by default, and while configuring for the EVPN EVI type, it is recommended to configure the EVPN EVI type as VLAN-based, VLAN bundle and VLAN aware model.

  • For Cisco IOS XE Gibraltar Release 16.9.5, Cisco IOS XE Gibraltar Release 16.12.3, and Cisco IOS XE Amsterdam 17.1.x, a minimum disk space of 2 MB is required in the boot flash memory file system for a successful ROMMON auto upgrade process. For a disk space lesser than 2 MB, ROMMON auto upgrade fails and the router reboots. This is applicable to Cisco ASR 903 and Cisco ASR 907 routers.

  • In the Cisco IOS XE 16.12.1, 17.1.1, and 17.2.1 releases, IPsec is not supported on the Cisco RSP3 module.

  • CEM circuit provisioning issues may occur during downgrade from Cisco IOS XE Amsterdam 17.3.1 to any lower versions or during upgrade to Cisco IOS XE Amsterdam 17.3.1 from any lower versions, if the CEM scale values are greater than 10500 APS/UPSR in protected CEM circuits. So, ensure that the CEM scale values are not greater than 10500, during ISSU to or from 17.3.1.

  • Some router models are not fully compliant with all IETF guidelines as exemplified by running the pyang tool with the lint flag. The errors and warnings that are exhibited by running the pyang tool with the lint flag are currently noncritical as they do not impact the semantic of the models or prevent the models from being used as part of the toolchains. A script has been provided, "check-models.sh", that runs pyang with lint validation enabled, but ignoring certain errors. This allows the developer to determine what issues may be present.

    As part of model validation for the Cisco IOS XE Amsterdam 17.3.1 release, "LEAFREF_IDENTIFIER_NOT_FOUND" and "STRICT_XPATH_FUNCTIONS" error types are ignored.

  • Test Access Port (TAP) is not supported when the iMSG VLAN handoff feature is enabled on the same node.

  • Data Communication Channel (DCC) is not supported in the A900-IMA1Z8S-CXMSNCS4200-1T8S-20CS interface module for the Cisco IOS XE Cupertino 17.8.1 release.

  • SF and SD alarms are NOT supported on T1 and T3 ports for the following interface modules:

    • A900-IMA3G-IMSG

    • A900-IMA48D-C

    • A900-IMA48T-C

    • NCS4200-3GMS

    • NCS4200-48T3E3-CE

    • NCS4200-48T1E1-CE

  • In RSP2 and RSP3 modules, during In-Service Software Upgrade (ISSU), interface modules undergo FPGA upgrade.

    The following table details the IM Cisco IOS XE versions during ISSU with respect to FPGA upgrade and the impact of traffic flow for these IMs:

Table 3. Impact on IM during ISSU and FPGA Upgrade

IM

IM Version During ISSU

Pre-ISSU FPGA Upgrade

Post-ISSU Impact on IM

FPGA Version post ISSU

Phase 1

Cisco IOS XE 17.3.x or earlier version to Cisco IOS XE 17.4.x

FPGA upgrade completes and IM starts after the reload process.

FPGA version (phase -1) - 0.47

Traffic is impacted during upgrade.

0.75

Phases 1 and 2

Version earlier to Cisco IOS XE 17.8.x

FPGA upgrade completes and IM starts after the reload process.

  • FPGA version (Phase 1)— 0.47

  • FPGA version (Phase 2)

    • A900-IMA8Z—69.22

    • NCS4200-8T-PS—69.22

    • Combo IM: 69.24

Traffic is impacted during upgrade.

  • FPGA version (Phase 1)—0.75

  • FPGA version (Phase 2)

    • A900-IMA8Z—69.24

    • NCS4200-8T-PS—69.24

    • Combo IM: 69.32

Phase 1

Cisco IOS XE 17.4.1 or later versions to Cisco IOS XE 17.8.1

IM FPGA already upgraded with the latest version and reload is not required.

Traffic is not impacted.

0.75

For more information on the FPGA versions, see Supported FPGA, HoFPGA, and ROMMON VersionsSupported FPGA Versions.

Refer the following table for supported IMs:

Table 4. ASR 900 Supported Ethernet Interface Module

Phase 1 IM

Phase 2 IM

Phase 3 IM

A900-IMA8S

A900-IMA8S1Z

A900-IMA8Z

A900 -IMA8T

A900-IMA8T1Z

A900-IMA2F

A900-IMA1X

A900-IMA2Z

A900-IMA2C
Table 5. NCS 4200 Supported Ethernet Interface Module

Phase 1 IM

Phase 2 IM

Phase 3 IM

NCS4200-1T8LR

NCS4200-1T8LR-PS

NCS4200-8T-PS

NCS4200-2Q-P

NCS4200-2H-PQ

Determining the Software Version

You can use the following commands to verify your software version:

  • Consolidated Package—show version

  • Individual sub-packages—show version installed (lists all installed packages)

Upgrading to a New Software Release

Only the latest consolidated packages can be downloaded from Cisco.com; users who want to run the router using individual subpackages must first download the image from Cisco.com and extract the individual subpackages from the consolidated package.

For information about upgrading to a new software release, see the Upgrading the Software on the Cisco ASR 900 Series Routers Upgrading the Software on the Cisco NCS 4200 Series Routers .

Upgrading the FPD Firmware

FPD Firmware packages are bundled with the software package. FPD upgrade is automatically performed ont the router.

If you like to manually change the FPD Firmware software, use the upgrade hw-module subslot 0/0 fpd bundle to perform FPD frmware upgrade.

ROMMON Version

We recommend you to upgrade the ROMMON version to 15.6(49r)S.

For more information on the ROMMON package, see Cisco Software Download.


Note

ROMMON upgrade is mandatory to boot RSP3 images.

Supported FPGA Versions for NCS 4206 and NCS 4216

Use the show hw-module all fpd command to display the IM FPGA version on the chassis.

Use the show platform software agent iomd [slot/subslot] firmware cem-fpga command to display the CEM FPGA version on the chassis.

The table below lists the FPGA version for the software releases.


Note

During ISSU, TDM interface modules are reset for FPGA upgrade.

Table 6. Supported TDM IM and CEM FPGAs for NCS 4206-RSP3 and NCS 4216

Category

 Cisco IOS XE Release 48 X T1/E1 CEM Interface Module FPGA 48 X T3/E3 CEM Interface Module FPGA OC-192 Interface Module + 8-port Low Rate Interface Module FPGA

NCS 4200-1T8S-20CS

 NCS4200-3GMS

IM FPGA

17.11.1a

1.22

1.22

1.15

0.95

2.0

CEM FPGA

7.0

5.6

5G mode:

6.5

10G mode:

7.9

10G mode:

7.4

20G mode:

7.5

9.3

IM FPGA

17.10.1

1.22

1.22

1.15

0.95

2.0

CEM FPGA

6.0

5.2

5G mode:

6.5

10G mode:

7.9

10G mode:

7.3

20G mode:

7.3

9.3

IM FPGA

17.9.2

1.22

1.22

1.15

0.95

2.0

CEM FPGA

6.0

5.2

5G mode:

6.5

10G mode:

7.9

10G mode:

7.2

20G mode:

7.2

9.1

IM FPGA

17.9.1

1.22

1.22

1.15

0.93

2.0

CEM FPGA

6.0

5.2

5G mode:

6.5

10G mode:

7.9

10G mode:

7.2

20G mode:

7.2

9.1

IM FPGA

17.8.1

1.22

1.22

1.15

0.93

2.0

CEM FPGA

6

5.2

5G mode:

6.5

10G mode:

7.9

10G mode:

7.0

20G mode:

6.0

9.0

IM FPGA

17.7.1

1.22

1.22

1.15

0.93

2.0

CEM FPGA

0x52110052

0x52520052

5G mode:

0x10090065

10G mode:

0x10070079

10G mode:

0x10290051

20G mode:

0x10290051

0x10030076

IM FPGA

17.6.2

1.22

1.22

1.15

0.93

2.0

CEM FPGA

0x52110052

0x52520052

5G mode:

0x10090065

10G mode:

0x10070079

10G mode:

0x10290051

20G mode:

0x10290051

0x10030076

IM FPGA

17.6.1

1.22

1.22

1.15

0.93

2.0

CEM FPGA

0x52110052

0x52520052

5G mode:

0x10090065

10G mode:

0x10070079

10G mode:

0x10290051

20G mode:

0x10290051

0x10030076

IM FPGA

17.5.1

1.22

1.22

1.15

0.93

2.0

CEM FPGA

0x52050052

0x52420052

5G mode:

0x10210063

10G mode:

0x10530078

10G mode:

0x10090051

20G mode:

0x10090051

0x10020076
Table 7. Supported Ethernet IM FPGA/FPD versions for NCS 4206-RSP3 and NCS 4216
Cisco IOS XE Release NCS4200-1T16G -PS NCS4200-1T8LR -PS NCS4200-8T -PS NCS4200-2Q -P NCS4200-1H -PK NCS4200-2H -PQ NCS4200 -1T16LR

17.11.1a

1.129

69.32

0.21

0.21

0.20

0.20

69.24

17.10.1

1.129

69.32

0.21

0.21

0.20

0.20

69.24

17.10.1

1.129

69.32

0.21

0.21

0.20

0.20

69.24

17.9.2

1.129

69.32

0.21

0.21

0.22

0.20

69.24

17.9.1

1.129

69.32

0.21

0.21

0.22

0.20

69.24

17.8.1

1.129

69.32

0.21

0.21

0.22

0.20

69.24

17.7.1

1.129

1.129

0.21

0.21

0.22

0.20

69.24

17.6.1

1.129

1.129

0.21

0.21

0.22

0.20

69.24

17.5.1

1.22

1.22

1.15

0.93

2.0

0.23

0.20

17.4.1

1.129

69.24

0.21

0.22

0.20

3.4

1.129
Table 8. FPGA, HoFPGA, and ROMMON Versions for Cisco IOS XE 17.11.1 Release

Platform

Interface Module

FPGA Current Version

FPGA Minimum Required Version

RSP HoFPGA Active

RSP HoFPGA Standby

ROMMON

NCS420X-RSP-128

NCS4200-1T8LR-PS

0.75

0.75

0X00030011

0X00030011

15.6(54r)S

NCS4206-RSP

NCS4200-1H-PK

0.20

0.20

40035

40035

15.6(57r)S

NCS4200-8T-PS

0.22

0.21

NCS4200-1T8LR-PS

69.32

69.32

NCS4216-RSP

NCS4200-1H-PK

0.20

0.20

20040034

20040034

15.6(57r)S

Additional References

Deferrals

Cisco IOS software images are subject to deferral. We recommend that you view the deferral notices at the following location to determine whether your software release is affected: http://www.cisco.com/en/US/products/products_security_advisories_listing.html.

Field Notices and Bulletins

MIB Support

The below table summarizes the supported MIBs on the Cisco NCS 4206 and Cisco NCS 4216.

Supported MIBs
BGP4-MIB (RFC 1657) CISCO-IMAGE-LICENSE-MGMT-MIB MPLS-LDP-STD-MIB (RFC 3815)
CISCO-BGP-POLICY-ACCOUNTING-MIB CISCO-IMAGE-MIB MPLS-LSR-STD-MIB (RFC 3813)
CISCO-BGP4-MIB CISCO-IPMROUTE-MIB MPLS-TP-MIB
CISCO-BULK-FILE-MIB CISCO-LICENSE-MGMT-MIB MSDP-MIB
CISCO-CBP-TARGET-MIB CISCO-MVPN-MIB NOTIFICATION-LOG-MIB (RFC 3014)
CISCO-CDP-MIB CISCO-NETSYNC-MIB OSPF-MIB (RFC 1850)
CISCO-CEF-MIB CISCO-OSPF-MIB (draft-ietf-ospf-mib-update-05) OSPF-TRAP-MIB (RFC 1850)
CISCO-CLASS-BASED-QOS-MIB CISCO-OSPF-TRAP-MIB (draft-ietf-ospf-mib-update-05) PIM-MIB (RFC 2934)
CISCO-CONFIG-COPY-MIB CISCO-PIM-MIB RFC1213-MIB
CISCO-CONFIG-MAN-MIB CISCO-PROCESS-MIB RFC2982-MIB
CISCO-DATA-COLLECTION-MIB CISCO-PRODUCTS-MIB RMON-MIB (RFC 1757)
CISCO-EMBEDDED-EVENT-MGR-MIB CISCO-PTP-MIB RSVP-MIB
CISCO-ENHANCED-MEMPOOL-MIB CISCO-RF-MIB SNMP-COMMUNITY-MIB (RFC 2576)
CISCO-ENTITY-ALARM-MIB CISCO-RTTMON-MIB SNMP-FRAMEWORK-MIB (RFC 2571)
CISCO-ENTITY-EXT-MIB CISCO-SONET-MIB SNMP-MPD-MIB (RFC 2572)
CISCO-ENTITY-FRU-CONTROL- MIB CISCO-SYSLOG-MIB SNMP-NOTIFICATION-MIB (RFC 2573)
CISCO-ENTITY-SENSOR-MIB DS1-MIB (RFC 2495) SNMP-PROXY-MIB (RFC 2573)
CISCO-ENTITY-VENDORTYPE-OID-MIB ENTITY-MIB (RFC 4133) SNMP-TARGET-MIB (RFC 2573)
CISCO-FLASH-MIB ENTITY-SENSOR-MIB (RFC 3433) SNMP-USM-MIB (RFC 2574)
CISCO-FTP-CLIENT-MIB ENTITY-STATE-MIB SNMPv2-MIB (RFC 1907)
CISCO-IETF-ISIS-MIB EVENT-MIB (RFC 2981) SNMPv2-SMI
CISCO-IETF-PW-ATM-MIB ETHERLIKE-MIB (RFC 3635) SNMP-VIEW-BASED-ACM-MIB (RFC 2575)
CISCO-IETF-PW-ENET-MIB IF-MIB (RFC 2863) SONET-MIB
CISCO-IETF-PW-MIB IGMP-STD-MIB (RFC 2933) TCP-MIB (RFC 4022)
CISCO-IETF-PW-MPLS-MIB IP-FORWARD-MIB TUNNEL-MIB (RFC 4087)
CISCO-IETF-PW-TDM-MIB IP-MIB (RFC 4293) UDP-MIB (RFC 4113)
CISCO-IF-EXTENSION-MIB IPMROUTE-STD-MIB (RFC 2932) CISCO-FRAME-RELAY-MIB
CISCO-IGMP-FILTER-MIB MPLS-LDP-GENERIC-STD-MIB (RFC 3815)

MIB Documentation

To locate and download MIBs for selected platforms, Cisco IOS and Cisco IOS XE releases, and feature sets, use Cisco MIB Locator found at the following location: http://tools.cisco.com/ITDIT/MIBS/servlet/index. To access Cisco MIB Locator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at the following location: http://tools.cisco.com/RPF/register/register.do

Open Source License Notices

For a listing of the license notices for open source software used in Cisco IOS XE 3S Releases, see the documents accessible from the License Information page at the following location:

http://www.cisco.com/en/US/products/ps11174/products_licensing_information_listing.html

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