Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 598
Implementation Information, Configuring Multicast Source Discovery Protocol
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www.dell.com | support.dell.com RPs advertise each (S,G) in its domain in Type, Length, Value (TLV) format. The total number of TLVs contained in the SA is indicated in the "Entry Count" field. SA messages are transmitted every 60 seconds, and immediately when a new source is detected. Figure 31-2. MSDP SA Message Format Source Port Dest. Port (639) Seq. Number Ack. Number Offset Reserved Flags Window Checksum Urgent Options Data Type Length Code: 1: IPv4 Source-active 2: IPv4 Source-active Request 3: IPv4 Souce-active Response 4: Keepalive 5: Reserved 6: MSDP traceroute in progress 7: MSDP traceroute reply Entry Count RP Address Reserved Sprefix Length Group Address Source Address (/32) MSDP 001 Implementation Information • The FTOS implementation of MSDP is in accordance with RFC 3618 and Anycast RP is in accordance with RFC 3446. Configuring Multicast Source Discovery Protocol Configuring MSDP is a three-step process: 1. Enable an exterior gateway protocol (EGP) with at least two routing domains. Figure 31-5 and MSDP Sample Configurations show the OSPF-BGP configuration used in this chapter for MSDP. Otherwise, refer to the Open Shortest Path First (OSPFv2 and OSPFv3) chapter and the Border Gateway Protocol IPv4 (BGPv4) chapter. 2. Configure PIM-SM within each EGP routing domain. Figure 31-5 and MSDP Sample Configurations show the PIM-SM configuration in this chapter for MSDP. Otherwise, refer to the PIM Sparse-Mode chapter. 3. Enable MSDP. 4. Peer the RPs in each routing domain with each other. Refer to Enable MSDP. 598 | Multicast Source Discovery Protocol
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