Operate and maintain
Documents under this category provide background concepts and procedures for configuring, operating, and maintaining SR Linux software.
- ACL and Traffic Steering Guide
  This document describes ACL and policy-based routing configuration for the Nokia Service Router Linux (SR Linux).
- Advanced Configuration Guide
  This document describes how to configure advanced solutions for the Nokia Service Router Linux (SR Linux). Advanced solutions are defined as more complex network-level configurations where additional guidance and more detailed procedures may be required.
- CLI Plug-in Guide
  This document describes how to create custom CLI plug-ins, and defines the classes and utility functions used to create them. It also defines how to install, modify, and remove a CLI plug-in.
- Configuration Basics Guide
  This document describes basic configuration for the Nokia Service Router Linux (SR Linux). Examples of commonly used commands are provided.
- gRIBI Guide
  This guide describes configuration details for the gRPC Routing Information Base Interface (gRIBI) feature set used with the Nokia Service Router Linux (SR Linux).
- Interfaces Guide
  This document describes interface configuration for the Nokia Service Router Linux (SR Linux), including subinterfaces, IRB interfaces, LAGs, DHCP relay, and IPv6 router advertisements.
- MPLS Guide
  This guide describes the services and provides configuration examples for the Multiprotocol Label Switching (MPLS) protocol used with the Nokia Service Router Linux (SR Linux).
- Multicast Guide
  This guide provides an overview of multicast routing concepts and provides configuration examples for Internet Group Management Protocol (IGMP), Multicast Listener Discovery (MLD), and Protocol Independent Multicast (PIM).
- Network Synchronization Guide
  This guide describes the network synchronization features for the Nokia Service Router Linux (SR Linux).
- P4Runtime Guide
  This document describes SR Linux support for P4Runtime and includes procedures for configuring SR Linux to operate with P4Runtime clients.
- Quality of Service Guide for 7220 IXR and 7250 IXR
  This document describes configuration details for the Quality of Service (QoS) feature set used with the Nokia Service Router Linux (SR Linux) on IXR-series platforms.
- Quality of Service Guide for 7730 SXR
  This document describes configuration details for the Quality of Service (QoS) feature set used with the Nokia Service Router Linux (SR Linux) on SXR-series platforms.
- Routing Protocols Guide
  This document describes routing protocol configuration for the Nokia Service Router Linux (SR Linux), including OSPF, IS-IS, and BGP.
- Security Best Practices and Hardening Guide
- Segment Routing Guide
  This document describes configuration details for the Segment Routing feature set used with the Nokia Service Router Linux (SR Linux).
- System Management Guide
  This document describes the interfaces used with the Nokia Service Router Linux (SR Linux).
- VPN Services Guide
  This document describes basic configuration for Layer 2 and Layer 3 Virtual Private Network service functionality on the Nokia Service Router Linux (SR Linux). It presents examples to configure and implement various protocols and services.

What's new

This section lists the changes that were made in this release.

Table 1. What's new in Release 26.7.1
Topic	Location
NTP server	Configuring an NTP server
Attempting to reprogram system resources when initially unavailable	Retrying resource allocation
Repurposing unused LEM capacity to increase IP FIB scale	IPv4 FIB LEM optimization
CPE check for static route failure detection	CPE check
MACsec support on 7250 IXR-18e7730 SXR-1-32D	MACsec
Facility alarms	Facility alarms
System resource monitoring	System resource monitoring
Support for FQDN for RADIUS server address	Configuring an AAA server group
RADIUS over TLS	Configuring an AAA server group
Logging de-duplication	Defining filters

July 16, 2026