No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.


Configuration Guide - VPN

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of VPN, including GRE, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, and VPLS.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Inter-AS VLL

Inter-AS VLL

The MPLS VPN solution is widely used, serving an increasing number of users in a large number of applications. As additional sites are developed in an enterprise, sites in different geographical locations are often connected to different ISP networks. Consider, for example, the inter-AS issue facing operators who manage different metropolitan area networks (MANs) or backbone networks that span different autonomous systems (AS). This scenario requires a different interworking model than the MPLS VPN architecture. This interworking model, called the inter-AS VLL, features a VPN that spans multiple ASs. In inter-AS networking, the devices located at the edge of ASs are AS boundary routers (ASBRs).

The device can implement inter-AS VLL Option A (VRF-to-VRF).

In inter-AS Option A, an interface must be reserved for each inter-AS VC on an ASBR. The ASBRs do not require MPLS or other additional inter-AS configuration. With Option A, ASBRs of the two ASs are directly connected and function as PE devices in their respective ASs. The two ASBRs regard each other as CE devices. Figure 4-8 shows the inter-AS option A networking.

Figure 4-8 Inter-AS Option A

For details about inter-AS VPN, see Inter-AS VPN in the BGP/MPLS IP VPN Configuration.

Updated: 2019-04-03

Document ID: EDOC1100075353

Views: 16353

Downloads: 26

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Previous Next