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Cisco IOS and NX-OS Software
Cisco IOS XR Software
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24-MAY-2004
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Recent Security Notices
13-Mar-2024
Security Advisory: Cisco IOS XR Software for ASR 9000 Series Aggregation Services Routers PPPoE Denial of Service Vulnerability
13-Mar-2024
Security Advisory: Cisco IOS XR Software SSH Privilege Escalation Vulnerability
13-Mar-2024
Security Advisory: Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability
13-Mar-2024
Security Advisory: Cisco IOS XR Software MPLS and Pseudowire Interfaces Access Control List Bypass Vulnerabilities
13-Mar-2024
Security Advisory: Cisco IOS XR Software Layer 2 Services Denial of Service Vulnerability
Document Categories
Configuration
Data Sheets and Product Information
Install and Upgrade
Literature
Maintain and Operate
Reference
Security Notices
Troubleshooting
Data Sheets and Product Information
At-a-Glance
Cisco IOS XR Flexible Consumption Model Overview
05-Aug-2022
Data Sheets
Cisco IOS XR Software Flexible Consumption Model Data Sheet
29-Jul-2023
IOS XR7 Data Sheet
19-Feb-2020
Cisco IOS XR Ethernet VPN Implementation and Verification Data Sheet
22-Dec-2017
Cisco IOS XR Software Release 6.0 Operational Enhancements Data Sheet
16-Nov-2015
End-of-Life and End-of-Sale Notices
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.9
28-Mar-2024
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.8
29-Nov-2023
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.7
01-Sep-2023
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 6.9
28-Jul-2023
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.6
29-Mar-2023
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.5
21-Dec-2022
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 6.8
05-Aug-2022
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.4
05-Aug-2022
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.3
28-Feb-2022
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.2
14-Sep-2021
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.1
22-Mar-2021
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 6.7
22-Mar-2021
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 7.0
27-Feb-2020
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 6.6
24-Jun-2019
End-of-Sale and End-of-Life Announcement for the Cisco IOS XR Software Release 6.5
11-Feb-2019
View all documentation of this type
Q&A
eXR : Default Management Interface Mapping
31-Mar-2021
Security Notices
Bulletins
Software Lifecycle Support Statement - IOS XR
28-Sep-2023
IOS XR Release Taxonomy Bulletin
27-Sep-2023
Cisco IOS XR Software Release 3.5.2 for Cisco CRS-1 and XR 12000 Series Routers
14-Jan-2008
Field Notices
Field Notice: FN - 72290 - Cisco IOS XR: QuoVadis Root CA 2 Decommission Might Affect Smart Licensing and Smart Call Home Functionality - Workaround Provided
22-Mar-2022
Field Notice: FN - 63979 - ASR9000, CRS, and XR12000 That Run Cisco IOS-XR 5.3.0 and Earlier - Oct 17, 2015 SW Certificate Expiration - Software Upgrade Recommended
18-Jan-2019
Security Advisories, Responses and Notices
Cisco IOS XR Software for ASR 9000 Series Aggregation Services Routers PPPoE Denial of Service Vulnerability
13-Mar-2024
Cisco IOS XR Software SSH Privilege Escalation Vulnerability
13-Mar-2024
Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability
13-Mar-2024
Cisco IOS XR Software MPLS and Pseudowire Interfaces Access Control List Bypass Vulnerabilities
13-Mar-2024
Cisco IOS XR Software Layer 2 Services Denial of Service Vulnerability
13-Mar-2024
Cisco IOS XR Software Authenticated CLI Secure Copy Protocol and SFTP Denial of Service Vulnerability
13-Mar-2024
Cisco IOS XR Software SNMP Management Plane Protection ACL Bypass Vulnerability
13-Mar-2024
Cisco IOS XR Software Access Control List Bypass Vulnerability
13-Sep-2023
Cisco IOS XR Software Connectivity Fault Management Denial of Service Vulnerability
13-Sep-2023
Cisco IOS XR Software Compression ACL Bypass Vulnerability
13-Sep-2023
Cisco IOS XR Software iPXE Boot Signature Bypass Vulnerability
13-Sep-2023
Cisco IOS XR Software Image Verification Vulnerability
13-Sep-2023
Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability
08-Mar-2023
Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability
08-Mar-2023
Vulnerabilities in Layer 2 Network Security Controls Affecting Cisco Products: September 2022
27-Sep-2022
View all documentation of this type
Reference
Licensing Information
Open Source Used In Cisco IOS XR Release 6.1.4
28-Jun-2017
(PDF - 7 MB)
Open Source Used In Cisco IOS XR Release 6.1.3
14-Feb-2017
(PDF - 7 MB)
Open Source Used In Cisco IOS XR Release 6.0.2
11-Jul-2016
(PDF - 7 MB)
Open Source Used In Cisco IOS XR Release 5.3.3
08-May-2016
(PDF - 320 KB)
Open Source Used In Cisco IOS XR Release 6.0.0
08-May-2016
(PDF - 36 MB)
Open Source Used In Cisco IOS XR Release 5.2.5
08-May-2016
(PDF - 3 MB)
Open Source Used In Cisco IOS XR Release 6.0.1
05-May-2016
(PDF - 7 MB)
Open Source Used In Cisco IOS XR Release 5.3.2
28-Aug-2015
Open Source Used In Cisco IOS XR Release 5.4.0
27-Aug-2015
Open Source Used In Cisco IOS XR Release 5.2.4
05-Jul-2015
Open Source Used In Cisco IOS XR Release 5.3.1
05-Jul-2015
Open Source Used In Cisco IOS XR Release 5.3.0
11-Feb-2015
Open Source Used In Cisco IOS XR Release 5.2.3
10-Feb-2015
Open Source Used In Cisco IOS XR Release 5.2.2
04-Nov-2014
Open Source Used In Cisco IOS XR Release 5.2.1
04-Nov-2014
View all documentation of this type
Technical References
Cisco IOS XR Software Release 4.1
Cisco IOS XR Task ID Reference Guide, Release 4.1
20-May-2011
Install and Upgrade
Install and Upgrade TechNotes
Install SMU in Cisco IOS XR7
16-Feb-2024
Set-up Repository for Installing Operations in IOS XR7 and Upgrade Process
02-Feb-2024
Install and Troubleshoot SMUs and Feature Packages in IOS eXR
02-Feb-2024
Upgrade Field Programmable Device (FPD) on 32-bit Cisco IOS XR (cXR)
12-Jan-2024
Configuration
Configuration Examples and TechNotes
Configure gNMI and Implement pYANG in IOS XR
15-Feb-2024
Configure Route Leak between GRT and VRF with IOS XR
07-Feb-2023
PTP and SyncE basics with Cisco IOS XR Configuration
30-Nov-2021
Understanding CEF Weight Distributions In Unequal-cost Load Sharing
28-Nov-2018
Configure Software for Cisco NCS 1002 (Rosco) with Alarm and Performance Data Monitoring
13-Mar-2018
Programming Guides
Cisco IOS XR Software Release 4.3.x
XML Schema Documentation for the Cisco ASR 9000 Series Aggregation Services Routers, Cisco IOS XR Release 4.3.0
XML Schema Documentation forthe Cisco CRS Router, Cisco IOS XR Release 4.3.0
XML Schema Documentation for the Cisco XR 12000 Series Routers, Cisco IOS XR Release 4.3.0
Cisco IOS XR Software Release 4.1
Cisco IOS XR XML API Guide, Cisco IOS XR Release 4.1
29-Mar-2011
Maintain and Operate
Maintain and Operate TechNotes
Cisco IOS XR Deployment Best Practices for OSPF/IS-IS and BGP Routing 
15-Feb-2024
Configure ltrace Scale Factors on ASR9K Route Processors and Line Cards for Efficient Memory Management
10-Apr-2023
Service Pack Overview for Routers that Run Cisco IOS XR
20-Nov-2015
Troubleshooting
Error and System Messages
Cisco IOS XR Software Release 5.1.x and Later Releases
Cisco IOS XR System Error Message Reference Guide
25-Sep-2019
Password Recovery
Configure New Password Recovery Procedure on 8000 and NCS5500 Platforms
16-Oct-2023
Support FAQ
Troubleshoot IOS XR September 30 2021 - DST Root CA X3 Certificate Expiry
16-Sep-2021
Troubleshooting TechNotes
Troubleshoot Modules in "SW_INACTIVE" State for IOS XR
16-Feb-2024
Create GISO File for IOS-XR Upgrade with Python 3
12-Feb-2024
Troubleshoot "OS-SHMWIN-2-ERROR_ENCOUNTERED" Error Message
17-Nov-2023
Transfer Show Tech-Support Files to XR VM on Routers Running eXR
24-Oct-2023
Resolve the Full IPv6 Packet Drop where an IPv6 ACL Is in Use
30-Sep-2023
Resolve the Port from the Err-Disable Status on the Cisco 8000 Router
29-Sep-2023
Troubleshoot Input Drops in Cisco IOS XR
12-Jul-2023
Understand IOS XR Software Maintenance Updates (SMUs)
25-Jul-2022
Configure OSPFv3 in an NSSA Area to Enable Translation of Type-7 LSA with Zero Forwarding Address
09-Mar-2022
Zero Touch Provisioning Implementation and Troubleshooting Tips
30-Jun-2021
XR7 Caveat: Console Port Stops Responding
25-Jun-2021
Cisco IOS-XR BGP with MPLS Designs
18-Jun-2021
SNMP Migration to Telemetry on IOS XR
25-Apr-2021
Troubleshoot Quick Reference Command List for TAC Assistance for IOS-XR Routers
03-Apr-2020
Create IS-IS Topology from CLI Output of IOS-XR Router
06-May-2019
View all documentation of this type
Literature
White Papers
Why Move to a Modern Network Operating System? White Paper
23-Feb-2021
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