Traffic Mirroring Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Release

PDF

Supported ERSPAN sessions

Updated: February 5, 2026

Overview

This section provides tables detailing the number of supported ERSPAN, local SPAN, and combined SPAN sessions across different software releases. Use this information to understand session limits based on your specific hardware and software version.

These tables detail the supported sessions for various releases and SPAN types:

Table 1. Maximum SPAN sessions support on prior and later releases

SPAN type

7.3.1 and prior releases

7.3.2 and later releases

ERSPAN (GRE IPv4, GRE IPv6, or GRE IPv4 + GRE IPv6)

4

8

Local SPAN

4

4

SPAN to File

4

4

Combined SPAN (GRE IPv4 + GRE IPv6 + Local SPAN + SPAN to File)

4

8

Table 2. Maximum sessions supported on various SPAN types

Starting Cisco IOS XR release

SPAN type

Maximum supported sessions

Release 7.2.12

ERSPAN (GRE IPv4, GRE IPv6, or GRE IPv4 + GRE IPv6)

4

Local SPAN

4

SPAN to File

4

Combined SPAN (GRE IPv4 + GRE IPv6 + Local SPAN + SPAN to File)

4

Release 24.2.11

Details sessions supported on the 88-LC1-52Y8H-EM and 88-LC1-12TH24FH-E line cards on all Egress Traffic Management (ETM)-based platforms, when the NPU compatibility mode is set to P100.

ERSPAN (GRE IPv4, GRE IPv6, or GRE IPv4 + GRE IPv6)

4

Local SPAN

4

SPAN to File

4

Combined SPAN (GRE IPv4 + GRE IPv6 + Local SPAN + SPAN to File)

4

For more information on NPU compatibility mode, see Configure the Compatibility Mode.