Cisco Cisco IOS Software Release 12.0(23)S
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Cisco IOS Release 12.0(23)S
MPLS Virtual Private Networks (VPNs)
Feature History
This document describes the Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN)
feature and includes the following sections:
feature and includes the following sections:
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Feature Overview
The IP Virtual Private Network (VPN) feature for Multiprotocol Label Switching (MPLS) allows a
Cisco IOS network to deploy scalable IPv4 Layer 3 VPN backbone services. An IP VPN is the
foundation companies use for deploying or administering value-added services including applications
and data hosting network commerce, and telephony services to business customers. In private local area
networks (LANs), IP-based intranets have fundamentally changed the way companies conduct their
business. Companies are moving their business applications to their intranets to extend over a wide area
network (WAN). Companies are also embracing the needs of their customers, suppliers, and partners by
using extranets (an intranet that encompasses multiple businesses). With extranets, companies reduce
business process costs by facilitating supply-chain automation, electronic data interchange (EDI), and
Cisco IOS network to deploy scalable IPv4 Layer 3 VPN backbone services. An IP VPN is the
foundation companies use for deploying or administering value-added services including applications
and data hosting network commerce, and telephony services to business customers. In private local area
networks (LANs), IP-based intranets have fundamentally changed the way companies conduct their
business. Companies are moving their business applications to their intranets to extend over a wide area
network (WAN). Companies are also embracing the needs of their customers, suppliers, and partners by
using extranets (an intranet that encompasses multiple businesses). With extranets, companies reduce
business process costs by facilitating supply-chain automation, electronic data interchange (EDI), and
Release
Modification
12.0(5)T
This feature was introduced.
12.0(21)ST
This feature was updated to support the Cisco 10720 Internet router.
12.0(22)S
This feature was updated to support the Cisco 12000 series Internet Router
on the following line cards: the 6E3-SMB and 12E3-SMB line cards, the
6-port channelized T3 (6CT3-SMB) line card, the OC-192c/STM-64c
Packet-over-SONET (POS) line card, and the Quad OC-48c STM-16c
POS line card.
on the following line cards: the 6E3-SMB and 12E3-SMB line cards, the
6-port channelized T3 (6CT3-SMB) line card, the OC-192c/STM-64c
Packet-over-SONET (POS) line card, and the Quad OC-48c STM-16c
POS line card.
12.0(23)S
This feature was integrated into Cisco IOS Release 12.0(23)S. The
command was introduced.