Configuring CLNS VPNs

Connectionless Network Service (CLNS) is a Layer 3 protocol similar to IPv4 for linking hosts (end systems) with routers (intermediate systems) in an Open Systems Interconnection (OSI) network. CLNS and its related OSI protocols, Intermediate System-to-Intermediate System (IS-IS) and End System-to-Intermediate System (ES-IS), are International Organization for Standardization (ISO) standards.

You can configure SRX and J Series devices as provider edge (PE) routers within a CLNS network. CLNS networks can be connected over an IP MPLS network core using BGP and MPLS Layer 3 virtual private networks (VPNs). For more information, see RFC 2547, BGP/MPLS VPNs.

You can use either the J-Web configuration editor or CLI configuration editor to configure CLNS.

For more information about CLNS, IS-IS, and ES-IS, see the JUNOS Routing Protocols Configuration Guide.

For information about which devices support the features documented in this chapter, see the JUNOS Software Feature Support Reference for SRX Series and J Series Devices.

This chapter contains the following topics:

• CLNS Terms
• CLNS Overview
• Before You Begin
• Configuring CLNS with a Configuration Editor
• Verifying CLNS VPN Configuration