{"title":"MPLS支持IP组播","authors":"A. Acharya, F. Griffoul, F. Ansari","doi":"10.1109/ATM.1999.786859","DOIUrl":null,"url":null,"abstract":"Multicast support in an MPLS (multiprotocol label switching) network has yet to be defined. An MPLS network consists of label switching devices such as ATM. This document discusses both dense-mode and sparse-mode IP multicast within the context of an MPLS network. Unlike unicast routing, dense-mode multicast routing trees are established in a data-driven manner and it is not possible to topologically aggregate such trees, which are rooted at different sources. In sparse-mode multicast, source-specific trees may coexist with a core/shared tree, and it is not possible to assign a common label to traffic from different sources on a branch of the shared tree. This leads us to suggest a per-source traffic-driven label allocation scheme for supporting all three types of multicast (dense mode, shared tree, source tree) routing trees in an MPLS network.","PeriodicalId":266412,"journal":{"name":"IEEE ATM Workshop '99 Proceedings (Cat. No. 99TH8462)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1999-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":"{\"title\":\"IP multicast support in MPLS\",\"authors\":\"A. Acharya, F. Griffoul, F. Ansari\",\"doi\":\"10.1109/ATM.1999.786859\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Multicast support in an MPLS (multiprotocol label switching) network has yet to be defined. An MPLS network consists of label switching devices such as ATM. This document discusses both dense-mode and sparse-mode IP multicast within the context of an MPLS network. Unlike unicast routing, dense-mode multicast routing trees are established in a data-driven manner and it is not possible to topologically aggregate such trees, which are rooted at different sources. In sparse-mode multicast, source-specific trees may coexist with a core/shared tree, and it is not possible to assign a common label to traffic from different sources on a branch of the shared tree. This leads us to suggest a per-source traffic-driven label allocation scheme for supporting all three types of multicast (dense mode, shared tree, source tree) routing trees in an MPLS network.\",\"PeriodicalId\":266412,\"journal\":{\"name\":\"IEEE ATM Workshop '99 Proceedings (Cat. No. 99TH8462)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-05-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE ATM Workshop '99 Proceedings (Cat. No. 99TH8462)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ATM.1999.786859\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE ATM Workshop '99 Proceedings (Cat. No. 99TH8462)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ATM.1999.786859","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Multicast support in an MPLS (multiprotocol label switching) network has yet to be defined. An MPLS network consists of label switching devices such as ATM. This document discusses both dense-mode and sparse-mode IP multicast within the context of an MPLS network. Unlike unicast routing, dense-mode multicast routing trees are established in a data-driven manner and it is not possible to topologically aggregate such trees, which are rooted at different sources. In sparse-mode multicast, source-specific trees may coexist with a core/shared tree, and it is not possible to assign a common label to traffic from different sources on a branch of the shared tree. This leads us to suggest a per-source traffic-driven label allocation scheme for supporting all three types of multicast (dense mode, shared tree, source tree) routing trees in an MPLS network.
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