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.
- 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 26.10.1
Topic	Location
Histogram display of symbol errors per RS-528 or RS-544 codeword	FEC statistics histogram
ICMP destination unreachable message returned when ARP/ND is unsuccessful (now supported on 7220 IXR-D`x` and 7220 IXR-H`x` devices)	Dynamic ARP entries
Support for ingress and egress mapping for VLAN manipulation on 7250 IXR Gen 2c+ and 7250 IXR Gen 3 platforms	Ingress and egress mapping for VLAN manipulation
Dynamic bridged subinterfaces	Dynamic bridged subinterfaces
For supported 7250 IXR Gen 3 and Gen 2cplatforms, qualified digital coherent optic (DCO) transceivers that comply with OIF-CMIS can loop traffic inside the transceiver.	DCO transceiver loopback

November 5, 2026