The MPLS WG Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] LDP usage in MPLS based VPNs
MPLS allow us to use the standard IP routing protocols such as OSPF or ISIS to know the network topology and establish LSP. When establishing LSP, either LDP or RSVP can be used. All the routers on the signaling path between two peer PE routers (including the P routers) must support the LDP or RSVP. BGP is only between the peer PE routers in a specific VPN because the RD and Route Target information are needed to be included in BGP advertisement message. The P routers between the peer PE routers doesn't have to support BGP. Actually, the BGP advertisement message between peer PE routers are transparent to the P routers in between. ******************************* Shujia GONG (Frank) Advanced Internet Laboratory George Mason University MSN 2G9 Johnson Ctr G10 4400 University Drive Fairfax, Virginia 22030 Tel: +1(703)9933905 ******************************* |
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