Cisco A9K-DSLT-LIC-5M ASR 9000 Dual-Stack Lite 5M Sessions License E-Delivery

About This Product

Buy Cisco A9K-DSLT-LIC-5M | ASR 9000 Series Dual-Stack Lite (DS-Lite) 5 Million Session License | E-Delivery

This license on sale are available exclusively Traditional License.

The A9K-DSLT-LIC-5M is the Cisco ASR 9000 Series Dual-Stack Lite (DS-Lite) 5 Million Session License — the IPv4-over-IPv6 tunneling capacity license for the A9K-ISM-100 Integrated Service Module on Cisco ASR 9000 Series Aggregation Services Routers. This Cisco ASR 9000 DS-Lite 5M license enables 5 million concurrent DS-Lite B4-to-AFTR sessions per license unit, allowing IPv4 traffic from subscriber CPEs (B4 elements) to be tunneled over an IPv6-only access network and NAT'd at the carrier edge (AFTR/Address Family Transition Router). For operators deploying IPv6-only access with IPv4 service preservation, this DS-Lite 5M license is the key IPv6 transition enabler at carrier scale.

Also referenced as A9K-DSLT-LIC-5M= or L-A9K-DSLT-LIC-5M, this Cisco ASR 9000 DS-Lite e-delivery license is a traditional Right-to-Use (RTU) session capacity license for the ISM-100 services card. DS-Lite (RFC 6333) capabilities: IPv4-in-IPv6 softwire tunneling from B4 CPE to AFTR on the ASR 9000, centralized NAT44 at the AFTR for IPv4 address sharing, per-subscriber and per-session visibility for accounting and troubleshooting, full ALG support (FTP, SIP, DNS, etc.) through the DS-Lite tunnel, and seamless coexistence with native IPv6 traffic on the same access network. Stackable — combine multiple 5M licenses per ISM-100 for cumulative capacity. Requires IOS XR 4.2.1+ for DS-Lite support. For NAT44 CGN, see A9K-CGN-LIC-5M; for NAT64, see A9K-NAT64-LIC-5M.

✅ Key Features

• • 5 million concurrent DS-Lite sessions — carrier-scale IPv4-over-IPv6 softwire tunneling for IPv6-only access networks with IPv4 service continuity
• • RFC 6333 DS-Lite AFTR — the ASR 9000 functions as the Address Family Transition Router (AFTR), terminating IPv4-in-IPv6 tunnels from B4 CPEs
• • Centralized NAT44 at AFTR — combined tunnel termination + NAT44 translation in a single carrier-edge services card (ISM-100)
• • IPv6 access + IPv4 service coexistence — enables operators to run IPv6-only access networks while preserving all IPv4 internet services for subscribers
• • ISM-100 hardware-accelerated + ALG — dedicated NPU-based tunnel termination and NAT; full ALG support through the DS-Lite tunnel
• • E-Delivery — license delivered electronically with no physical shipment required
• • Perpetual RTU license — one-time purchase with no recurring subscription or annual renewal fee

Compatible Platform

The A9K-DSLT-LIC-5M DS-Lite license requires the A9K-ISM-100 Integrated Service Module in the Cisco ASR 9000 Series: ASR 9006, 9010, 9912, and 9922. Requires Cisco IOS XR 4.2.1+ for DS-Lite support. IPv6-enabled access network and B4-capable CPEs required. Related: A9K-CGN-LIC-5M (NAT44), A9K-NAT64-LIC-5M (NAT64). Combined CGN+DSLT+NAT64 capacity is hardware-limited per ISM-100.

Information Needed

To generate your license file, please send the output of show license udi from your Cisco ASR 9000 Series router to support@switchlicense.com, or leave a message online after placing your order. The license file is tied to your specific device UDI and cannot be transferred to another unit.

License Delivery

This Cisco software license is delivered electronically. Once your device UDI is confirmed, we will send you the .lic license file by email. No physical shipment is required — simply install the file on your ASR 9000 Series router with the ISM-100 card and the 5M DS-Lite session capacity is immediately available.

Warranty

We provide a 100% working warranty on all licenses. If the license file does not activate correctly on your device, we will resolve the issue at no additional cost. All payments are processed securely via PayPal for your peace of mind.