Classification processing method and network equipment for multi-protocol label switching service
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NEW H3C TECH CO LTD
- Publication Date
- 2007-08-08
Smart Images
Figure 1 Figure 2 Figure 3
Abstract
Description
technical field
[0001] The invention relates to the technical field of MPLS (Multi Protocol Label Switch, multi-protocol label switching), in particular to a multi-protocol label switching service classification processing method and network equipment. Background technique
[0002] Multi-protocol label switching uses short and fixed-length labels to encapsulate layer-3 packets and layer-2 data frames, and forwards them only based on labels on the MPLS network, without the need for complex routing lookups like IP. The MPLS packet header is 32 bits, as shown in Figure 1, where 0 to 20 bits are the label value, 21 to 22 bits are CoS (Class of Service), and 23 bits are S (stack indication, indicating whether the label is the lowest layer label) , 24 to 32 bits are TTL (Time to Live, time to live).
[0003] VPN (Virtual Private Network, Virtual Private Network) service is one of the most important applications of MPLS. MPLS VPN can be divided into two categories: L3VPN (Layer 3 ...