Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

header-navigation

Solutions

Featured solutions AI Campus and branch Data center WAN Security Service provider Cloud operator Industries
Campus and Branch

Welcome to the NOW Way to Wi-Fi

Take your networking performance to new heights with a modern, cloud-native, AI-Native architecture. Only Juniper can help you unleash the full potential of Wi-Fi 7 with our AI-Native platform for innovation.
Prepare for liftoff
Business intelligence analyst dashboard on virtual screen. Big data Graphs Charts.

AI Data Center Networking

Juniper’s AI data center solution is a quick way to deploy high performing AI training and inference networks that are the most flexible to design and easiest to manage with limited IT resources.
Find out more
Enterprise AI-Native Networking

Enterprise AI‑Native Routing

Juniper's Ai-Native routing solution delivers robust 400GbE and 800GbE capabilities for unmatched performance, reliability, and sustainability at scale.
Explore enterprise routing
Zero trust security

Ops4AI Lab

Visit our lab in Sunnyvale, CA and see our AI data center solution for yourself. You can try out your own model’s functionality and performance, too.
Visit the lab
Enterprise AI-Native Networking

Enterprise AI‑Native Routing

Juniper's Ai-Native routing solution delivers robust 400GbE and 800GbE capabilities for unmatched performance, reliability, and sustainability at scale.
Explore enterprise routing
Higher Education

Shaping Student Experiences: The NOW Way to Build Higher Education Networks

Join Juniper Networks CIO Sharon Mandell and a virtual summit of C-level IT leaders from prestigious institutions as they discuss ongoing efforts to support digital transformation.
Register to attend
Hand on tablet with healthcare overlay of graphics

Security in healthcare

In this IDC Spotlight report, discover how AI networking can automate and strengthen a healthcare ecosystem to defeat criminals and prevent loss. 
Gain insights into ecosystem security
Retail

The Future of In-Store Technologies

Join us for an enlightening webinar with Kevin McCartan, Senior IT Service Delivery Engineer at Musgrave; retail guru Jack Stratten of Insider Trends; and Christian Gilby, Director of Product Marketing at Juniper Networks, as they discuss the future of in-store technologies.
Reserve my spot

Products

Wireless access Wired access SD-WAN / SASE Routing and switching Security Mist AI™ Management software Network operating system Blueprint for AI-Native Acceleration Optics
  • Operations
ACX7020 router

Juniper ACX7020 Cloud Metro Access Router

Legacy networks simply cannot meet the demands of today’s rapidly evolving metro landscape. Unlock a new generation of highly scalable architectures and automated operations with the Juniper ACX7020. 
Learn more
EX4000 Ethernet Switch

Next-gen AI-Native EX4000 line of switches

Lack of AI innovation from your current networking vendor slowing you down? Embrace Juniper’s cloud-native, AI-Native access switches that support every level and layer, across nearly every deployment.
Discover how
The Q and AI text with an image of Bob Friday and Kedar Dhuru.

The Q&AI Podcast

Delivering practical solutions and enriching discussions, this podcast series is a vital resource for those seeking an in-depth exploration of AI's transformative potential.
Catch the latest episode

Services

Services
Services AI Care

Juniper AI Care Services Revolutionize Your Service Experience

Our industry-first AI-Native services couple AIOps with our deep expertise across the full network life cycle. You can move from reactive response to proactive insight and action.
Explore AI Care Services
Services AI Data Center

Juniper AI Data Center Deployment Services Optimize Your AI Model Runs

We use our expertise and validated designs to help design, deploy, validate and tune networks, including GPUs and storage, to get the most from your AI infrastructure operation.
Learn about AI Data Center Deployment Services

Partners

Partners

Support and Documentation

Support and Documentation

Learn

About Juniper Training Events The Feed Resources Technology learning topics Thought leadership and insights
Audience raising hands up while businessman is speaking in training at the office.

Juniper certification and training news

See the latest
Ringing of the bell

All global events

See the latest
AI-native-now

AI-Native NOW event series

Register now
Juniper's Christina Hendrix at the head of a conference table. With the text "The NOW Way to Network" overlayed, with "NOW" emphasizing the "O" in green color.

The NOW Way to Network

Watch the video series
AI Native Now

Executive insights

Dive deep with leading experts and thought leaders on all the topics that matter most to your business, from AI to network security to driving rapid, relevant transformation for your business.
Learn more
A keynote speaker giving a presentation at a conference. There are dozens of people sitting around them. The presentation is displayed via projector on all the walls in the room.

Leadership voices

Juniper Networks’ leaders operate on the front lines of creating the network of the future. Take a look around to see what’s on their minds.
Watch now
Bob Friday and Jessica Garrison speaking

Bob Friday Talks

Join Bob as he ventures into all the knowns -- and -- unknowns -- of AI.
Catch the latest episode
Documentation
Menu
License Guide
Quick Starts
Validated Designs
Explore Pathfinder Apps
CLI Explorer
Feature Explorer
Hardware Compatibility Tool
Port Checker
Browse All
Collapse

Pathfinder Apps

All

By Software

By Hardware

Learn More
Pathfinder HomeCLI ExplorerCompliance AdvisorFeature ExplorerHardware Compatibility ToolJunos XML API ExplorerJunos YANG Data Model ExplorerPort CheckerPower CalculatorSNMP MIB ExplorerSystem Log Explorer
CLI ExplorerFeature ExplorerJunos XML API ExplorerJunos YANG Data Model ExplorerSNMP MIB ExplorerSystem Log Explorer
Compliance AdvisorFeature ExplorerHardware Compatibility ToolPort CheckerPower Calculator
Home Documentation Junos OS Junos CLI Reference CLI Reference S

Junos CLI Reference

keyboard_arrow_up
close
keyboard_arrow_left
Junos CLI Reference
Table of Contents Expand all
list Table of Contents
file_download PDF
{ "lLangCode": "en", "lName": "English", "lCountryCode": "us", "transcode": "en_US" }
English
ON THIS PAGE
keyboard_arrow_right

show services l2tp tunnel-switch tunnel

date_range 19-Nov-23
arrow_backward
arrow_forward

Syntax

content_copy zoom_out_map
show services l2tp tunnel-switch tunnel
<detail | extensive>
<statistics>

Description

Display information about L2TP switched tunnels.

Options

none

Display standard information about all active L2TP tunnels.

detail | extensive

(Default) Display the specified level of output.

statistics

(Optional) Display the number of control packets and bytes transmitted and received for the tunnel. You cannot include this option with either of the level options, detail or extensive.

Required Privilege Level

view

Output Fields

Table 1 lists the output fields for the show services l2tp tunnel-switch tunnel command. Output fields are listed in the approximate order in which they appear.

Table 1: show services l2tp tunnel-switch tunnel Output Fields

Field Name

Field Description

Level of Output

Local ID

On the LNS, number assigned by the LNS that identifies the local endpoint of the tunnel relative to the LNS: the LNS.

On the LAC, number assigned by the LAC that identifies the local endpoint of the tunnel relative to the LAC: the LAC.

none

Remote ID

On the LNS, number assigned by the LAC that identifies the remote endpoint of the tunnel relative to the LNS: the LAC.

On the LAC, number assigned by the LNS that identifies the remote endpoint of the tunnel relative to the LAC: the LNS.

none

Remote IP

IP address of the peer endpoint of the tunnel.

All levels

Sessions

Number of L2TP sessions established through the tunnel.

All levels

Switched-sessions

Number of L2TP sessions established by tunnel switching.

All levels

State

State of the L2TP tunnel:

  • cc_responder_accept_new—The tunnel has received and accepted the start control connection request (SCCRQ).

  • cc_responder_reject_new—The tunnel has received and rejected the SCCRQ.

  • cc_responder_idle—The tunnel has just been created.

  • cc_responder_wait_ctl_conn—The tunnel has sent the start control connection response (SCCRP) and is waiting for the start control connection connected (SCCCN) message.

  • clean-up—The tunnel is being cleaned up.

  • closed—The tunnel is being closed.

  • destroyed—The tunnel is being destroyed.

  • Established—The tunnel is operating. This is the only state supported for the LAC.

  • Terminate—The tunnel is terminating.

  • Unknown—The tunnel is not connected to the router.

All levels

Tunnel local ID

On the LNS, number assigned by the LNS that identifies the local endpoint of the tunnel relative to the LNS: the LNS.

On the LAC, number assigned by the LAC that identifies the local endpoint of the tunnel relative to the LAC: the LAC.

detailextensive

Tunnel remote ID

On the LNS, number assigned by the LAC that identifies the remote endpoint of the tunnel relative to the LNS: the LAC.

On the LAC, number assigned by the LNS that identifies the remote endpoint of the tunnel relative to the LAC: the LNS.

detailextensive

Tunnel Name

(LAC only) Name of the created tunnel. This value includes the destination name followed by the value of the RADIUS Tunnel-Assignment-ID VSA [82].

detailextensive

Local IP

IP address of the local endpoint of the tunnel.

detailextensive

Local name

Name used for local tunnel endpoint during tunnel negotiation.

detailextensive

Remote name

Name used for remote tunnel endpoint during tunnel negotiation.

detailextensive

Effective Peer Resync Mechanism

(LAC only) Peer resynchronization mechanism (PRM) in effect for the tunnel:

  • Failover protocol

  • Silent failover—Recovery takes place in the failed endpoint only using the proprietary silent failover protocol.

detailextensive

NAS Port Method

(LAC only) Status of interoperation with Cisco LNS devices:

  • none—NAS port method is not enabled for interoperation.

  • cisco-avp—NAS port method is enabled for interoperation.

detailextensive

Tunnel Logical System

Logical system in which the L2TP tunnel is brought up.

detailextensive

Tunnel Routing Instance

Routing instance in which the L2TP tunnel is brought up.

detailextensive

Max sessions

Maximum number of sessions that can be established on this tunnel.

extensive

Window size

Number of control messages that can be sent without receipt of an acknowledgment.

extensive

Hello interval

Interval between the transmission of hello messages, in seconds.

extensive

Create time

Date and time when the tunnel was created. While the LNS and LAC are connected, this value should correspond to the router's uptime. If connection to the LAC is severed, the State changes to Unknown and the Create time value resets.

extensive

Up time

Amount of time elapsed since the tunnel became active, in hours, minutes, and seconds.

extensive

Idle time

Amount of time elapsed since the tunnel became idle, in hours, minutes, and seconds.

extensive

ToS Reflect

Status of IP ToS value reflection, Disabled or Enabled.

extensive

Interface Name

(LNS only) Name of an adaptive services interface.

extensive

Tunnel Group Name

(LNS only) Name of a tunnel group.

extensive

Statistics since

Date and time when collection of the following statistics began:

  • Control Tx—Amount of control information transmitted, in packets and bytes.

  • Control Rx—Amount of control information received, in packets and bytes.

  • Data Tx—Amount of data transmitted, in packets and bytes.

  • Data Rx—Amount of data received, in packets and bytes.

  • Errors Tx—Number of errors transmitted, in packets.

  • Errors Rx—Number of errors received, in packets.

extensive

Sample Output

show services l2tp tunnel-switch tunnel

content_copy zoom_out_map
user@host> show services l2tp tunnel-switch tunnel
  Local ID Remote ID Remote IP              Sessions Switched-sessions State
  37602    1         192.0.2.3:1701                 1                 1 Established           
  37060    1         198.51.100.10:1701             1                 1 Established

show services l2tp tunnel-switch tunnel detail

content_copy zoom_out_map
user@host> show services l2tp tunnel-switch tunnel detail
  Tunnel local ID: 37602, Tunnel remote ID: 1
    Remote IP: 192.0.2.3:1701
    Sessions: 1, Switched sessions: 1, State: Established
    Tunnel Name: 1/1
    Local IP: 203.0.113.51:1701
    Local name: ce-bras-mx240-f, Remote name: testlac
    Effective Peer Resync Mechanism: silent failover
    Nas Port Method: none
    Tunnel Logical System: default, Tunnel Routing Instance: default
  Tunnel local ID: 37060, Tunnel remote ID: 1
    Remote IP: 198.51.100.10:1701
    Sessions: 1, Switched sessions: 1, State: Established
    Tunnel Name: 2/1
    Local IP: 203.0.113.31:1701
    Local name: lns, Remote name: lns
    Effective Peer Resync Mechanism: silent failover
    Nas Port Method: none
    Tunnel Logical System: default, Tunnel Routing Instance: default

show services l2tp tunnel-switch tunnel extensive

content_copy zoom_out_map
user@host> show services l2tp tunnel-switch tunnel extensive
Waiting for statistics...
  Tunnel local ID: 37602, Tunnel remote ID: 1
    Remote IP: 192.0.2.3:1701
    Sessions: 1, Switched sessions: 1, State: Established
    Tunnel Name: 1/1
    Local IP: 203.0.113.51:1701
    Local name: ce-bras-mx240-f, Remote name: testlac
    Effective Peer Resync Mechanism: silent failover
    Nas Port Method: none
    Tunnel Logical System: default, Tunnel Routing Instance: default
    Max sessions: 128100, Window size: 4, Hello interval: 60
    Create time: Fri Jan 18 03:01:11 2013, Up time: 00:07:49
    Idle time: 00:00:00, ToS Reflect: Disabled
    Interface Name: si-2/1/0, Tunnel Group Name: ce-l2tp-tunnel-group
    Statistics since: Fri Jan 18 03:01:11 2013
                        Packets        Bytes
      Control Tx              7          259
      Control Rx              7          279
      Data Tx                97         1175
      Data Rx                 0            0
      Errors Tx               0
      Errors Rx               0
  Tunnel local ID: 37060, Tunnel remote ID: 1
    Remote IP: 198.51.100.10:1701
    Sessions: 1, Switched sessions: 1, State: Established
    Tunnel Name: 2/1
    Local IP: 203.0.113.31:1701
    Local name: lns, Remote name: lns
    Effective Peer Resync Mechanism: silent failover
    Nas Port Method: none
    Tunnel Logical System: default, Tunnel Routing Instance: default
    Max sessions: 128100, Window size: 4, Hello interval: 60
    Create time: Fri Jan 18 03:01:14 2013, Up time: 00:07:46
    Idle time: 00:00:00
    Statistics since: Fri Jan 18 03:01:14 2013
                        Packets        Bytes
      Control Tx              8          482
      Control Rx              7          183
      Data Tx                 0            0
      Data Rx                96         1158
      Errors Tx               0
      Errors Rx               0

Release Information

Command introduced in Junos OS Release 13.2.

Related Documentation

arrow_backward PREVIOUS show services l2tp tunnel-switch summary
NEXT arrow_forward show services l2tp user
footer-navigation

© 1999 - 2025 Juniper Networks, Inc. All rights reserved.

Scroll to top