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Home > Support > Technical Documentation > JunosE Software > L2TP LNS on E Series Broadband Services Routers, Release 13.2
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L2TP LNS on E Series Broadband Services Routers, Release 13.2


JunosE Software Documentation for E Series Broadband Services Routers, Release 13.2

  • Overview
  • Configuration
  • Administration
  • Troubleshooting
L2TP Functionalities

L2TP Overview

L2TP Terminology

Packet Fragmentation

L2TP Deployment

Implementing L2TP

Overriding LNS Out-of-Resource Result Codes 4 and 5

L2TP Platform and Module Requirements

L2TP Module Requirements

L2TP Platform Considerations

L2TP References

L2TP Sessions and Tunnels

Sessions and Tunnels Supported

Stateful Line Module Switchover Platform Considerations

Managing L2TP Destinations, Tunnels, and Sessions

Application Support for Stateful Line Module Switchover

Termination of PPP and L2TP Subscriber Sessions

VSAs for Dynamic IP Interfaces Overview

Overview of Mapping Application Terminate Reasons and RADIUS Terminate Codes

PPP Accounting Statistics

PPP Accounting Statistics

How L2TP Dial-Out Works

L2TP Dial-Out Overview

L2TP Dial-Out Platform Considerations

L2TP Dial-Out References

L2TP Dial-Out Network Model

L2TP Dial-Out Process

L2TP Dial-Out Operational States

L2TP Dial-Out Outgoing Call Setup Details

Configuration Tasks for LNS

LNS Configuration Prerequisites

Configuring an LNS

Creating an L2TP Destination Profile

Creating an L2TP Host Profile

Configuring the Maximum Number of LNS Sessions

Configuring Groups for LNS Sessions

Configuration Tasks for TX Speed and RX Window Sizes

Configuring the RADIUS Connect-Info Attribute on the LNS

Configuring the Receive Window Size

Bundled LNS Sessions

Selecting Service Modules for LNS Sessions Using MLPPP

Configuring L2TP Tunnels on LNS

Enabling Tunnel Switching

Creating Persistent Tunnels

Testing Tunnel Configuration

Configuring L2TP Tunnel Switch Profiles

Configuration Task for L2TP Disconnect-Cause Code

Configuring Disconnect Cause Information

Peer Resynchronization Methods for Failover

Configuring Peer Resynchronization

Transmit Connect Speed Method for L2TP Sessions

Configuring the Transmit Connect Speed Calculation Method

Configuration Commands

aaa tunnel switch-profile

aaa tunnel tx-connect-speed-method

avp

bundled-group-id

bundled-group-id-overrides-mlppp-ed

default-upper-type mlppp

disable proxy lcp

disconnect-cause

enable proxy authenticate

failover-resync

ip router-id

l2tp destination profile

l2tp disconnect-cause

l2tp failover-resync

l2tp switch-profile

l2tp tunnel-switching

l2tp tunnel default-receive-window

l2tp tunnel idle-timeout

l2tp tunnel test

local host

local ip address

max-sessions

radius connect-info-format

radius include l2tp-ppp-disconnect-cause acct-stop enable

receive-window

remote host

sessions-limit-group

session-out-of-resource-result-code-override

tunnel password

tx-connect-speed-method

virtual-router

Verifying Domain Maps and L2TP Tunnels with AAA

Monitoring the Mapping for User Domains and Virtual Routers with AAA

Monitoring Configuration of Tunnel Parameters with AAA

Monitoring Configured Tunnel Groups with AAA

Verifying the L2TP Tunnel Aggregated Settings

Monitoring Global Configuration Status on E Series Routers

Monitoring L2TP Destination Settings

Monitoring Detailed Configuration Information for Specified Destinations

Monitoring Configured and Operational Status of all Destinations

Monitoring Locked Out Destinations

Monitoring Configured Destination Profiles or Host Profiles

Viewing the Disconnect Cause-Codes for PPP Sessions

Monitoring Statistics on the Cause of a Session Disconnection

Viewing the Configured L2TP Session Details

Monitoring Detailed Configuration Information about Specified Sessions

Monitoring Configured and Operational Summary Status

Viewing L2TP Switch-Profiles

Monitoring Configured Switch Profiles on Router

Monitoring L2TP Tunnel Settings

Monitoring Detailed Configuration Information about Specified Tunnels

Monitoring Configured and Operational Status of All Tunnels

Monitoring L2TP Dial-Out Settings

Monitoring Chassis-wide Configuration for L2TP Dial-out

Monitoring Dial-out Targets within the Current VR Context

Monitoring Operational Status within the Current VR Context

Monitoring Status of Dial-out Sessions

Monitoring Commands

show aaa domain-map

show aaa tunnel-group

show aaa tunnel-parameters

show l2tp

show l2tp destination

show l2tp destination lockout

show l2tp destination profile

show l2tp received-disconnect-cause-summary

show l2tp dial-out

show l2tp dial-out session

show l2tp dial-out target

show l2tp dial-out virtual-router

show l2tp session

show l2tp switch-profile

show l2tp tunnel

Knowledge Base

ERX operating as an L2TP LNS will not negotiate multilink PPP with tunneled clients unless the LAC supplies proxy LCP information when establishing the tunnel.

Stray policies on L2TP LNS after shut/no shut of L2TP and bouncing subscribers

Windows clients are unable to establish MLPPP sessions with the ERX acting as an L2TP LNS

conf f filename.scr complains about L2TP LNS config

NAS-Port and NAS-Port-Type missing in L2TP LNS side of RADIUS access-request, acct-request and acct-stop messages

SM Line Card Reset FC recovery, reset type: panic task: Ingress FC[1] file: ngress/ifaNat.cc line: 215 after enabling ip port mirroring on an L2TP LNS.

Configuring ERX and Windows XP for L2TP over IPSec

Sample configuration for L2TP tunnel switching

Interoperability problems relating to LCP negotiation of MRU

PPP compression support on E-series routers

LNS l2tp interface doesn't show queue of qos-profile attached by SDX

L2TP LAC. Sessions/tunnels to an LNS drop, when bouncing sessions tunneled to a second LNS

ERX LAC sends L2TP ICCN packet that is rejected by LNS

L2TP ICRQs rejected by LNS because "system too busy".

L2TP flow control issues between a ERX LNS and a Cisco LAC.

Sample L2TP Configuration with a Cisco LAC and an ERX LNS

How does an L2TP LAC report the ATM subinterface speed to an LNS?

ERX (LNS) may incorrectly attempt to re-establish an L2TP tunnel

System result code behavior when the maximum number of L2TP sessions is reached on an LNS

How to apply l2tp rate-limit-profile on LNS

LNS fails to reassemble L2TP Tunnel packets.

Reassembly failures on TSM in L2TP configuration with ERX as LNS.

If the L2TP tunnel is originated from LAC inside VPN VRF to the LNS inside VRF on a remote PE, PPP frames will be dropped on access line card after L2TP session have been estabilshed.

ERX LNS sends an incorrect MRU value after receiving an LCP config NAK for MLPPP clients over L2TP

Line Card Reset - Ping Failure Threshold Exceeded reset of the TSM line card after bring up a few hundred L2TP sessions

PPP magic number improperly handled for Proxy LCP at the LNS.

Cannot establish L2TP tunnel during 31-second "dead time"

L2TP tunnel switch fragmentation corrupting egress packets

L2TP sessions are dropped after SRP switch with HA active and the L2TP peer resynchronization method configured for silent-failover

Receiving a retrograde Nr from peer may cause a "stuck" L2TP tunnel

 

Downloads

  • Broadband Access Configuration Guide, Release 13.2.0 PDF Document
  • L2TP LNS Devices on E Series Broadband Services Routers PDF Document
 
 
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