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Key Information
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Technology Information
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Point-to-Point Tunneling Protocol (PPTP)
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Serial Tunnel (STUN)
Technology Q&A
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Mobile IP
- Access Control Lists and IP Fragments
Technology White Paper
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Design
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Layer Two Tunnel Protocol (L2TP)
Design Guides
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Configuration
- TCP over X.25
- Next Generation Multicast Default MDT: Profile 0
- Multicast over a GRE Tunnel
- Set Up L2TP Tunnel Between a Windows Machine and a Cisco Router
- Client-Initiated L2TPv2 Tunnel with ISR4000 That Acts as a Server Configuration Example
- Guide to BSC and BSTUN
- Enable LAT Over a GRE Tunnel with Protocol Translation Configuration Example
- L2 Bridging Across an L3 Network Configuration Example
- WCCP on ASA: Concepts, Limitations, and Configuration
- Configuring Cisco IOS and Windows 2000 Clients for L2TP Using Microsoft IAS
- Configuring Layer 2 Tunnel Protocol Authentication with RADIUS
- How to Configure Layer 2 Tunnel Protocol Authentication with TACACS+
- Configuring the PIX Firewall and VPN Clients Using PPTP, MPPE and IPSec
- Configuring the PIX Firewall and VPN Clients Using PPTP, MPPE and IPSec
- Configuring a GRE Tunnel over IPsec with OSPF
Configuration Examples and TechNotes
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Operation and Troubleshooting
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Generic Routing Encapsulation (GRE)
Maintain and Operate TechNotes
- Resolve IPv4 Fragmentation, MTU, MSS, and PMTUD Issues with GRE and IPsec
- GRE Tunnel Interface States and What Impacts Them
- Xconnect over VRF Aware L2TPv3 in ASR1K
- GRE Tunnel Keepalives
- Understanding the authentication imsi-auth | msisdn-auth Configuration for Corporate L2TP APNs
- L2TP in StarOS - Implementation on the ASR5k and Troubleshoot L2TP Peering - L2TPTunnelDownPeerUnreachable
- Quality of Service Options on GRE Tunnel Interfaces
- Overview of Keepalive Mechanisms on Cisco IOS
- Guide to BSC and BSTUN
- DMVPN Phase 1 Debugs Troubleshoot Guide
- How Virtual Private Networks Work
- Cisco Hardware and VPN Clients Supporting IPSec/PPTP/L2TP
- Cisco BSTUN/BSC/Bisync Hardware Support Levels
- How GRE Keepalives Work
- Using RADIUS Servers with VPN 3000 Products
Troubleshooting TechNotes
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