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Title: R&S Quick Notes – Multicast & IPv6

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Multicast     BSR is also commonly referred to as PIMv2.     Pay special attention to when using Frame-Relay non-broadcast types. Multicast will not work. Tunnels might be needed.     BSR – when multiple c-RP announces same groups, a longer match will be used to determine the RP, regardless of the RP priority set.     With TTL scoping, if the Packet TTL >= Interface TTL, then the packet is forwarded, else dropped.     GRE-tunnel -  If the unicast source is reachable via tunnel, a RPF failure will occur. Correct with Mroute.     Know how to spot RPF failures.     Multicast Filtering:    1. Q – Prevent PIM neighbor establishments, but allow IGMP  client joins?  A – On Central router : “ip pim neighbors filter” & the Stub router : “ip igmp helper-address”     2. Q – Filter specific multicast groups, while still allowing IGMP traffic?  A – “ip multicast boundary {acl}”  3. Q – Deny clients from joining specific multicast groups?  A – “ip igmp access-group {acl}”  4. Q – Statically filter RP requests and responses, (no Auto-RP, no BSR)?  A – “ip pim rp address {IP} {acl}”  5. Q – Client RP filtering, Limit join/prune messages for specific RP's?  A – “ip pim accept-rp {RP-IP/auto-RP} {acl}”  6. Q – Auto-RP – Limit the Candidate-RP's announcements?  A – “ip pim send-rp-announce {int} scope {no} group-list {acl}”  7. Q – Auto-RP – Limit what mgroups a MA accept from specific RP's?  A – “ip pim rp-announce-filter rp-list {acl} group-list {acl}”  8. Q – Filter the BSR messages on a interface?  A – “ip pim bsr-border”  9. Q – Limit the amount of multicast routes in the mrouting table?  A – “ip multicast route-limit”  10. Q – Limit the rate a source can sent traffic to a group on a interface?  A – “ip multicast rate-limit group-list {acl} {kbps}”  IPv6     RIPng – “no ip split-horizon” in a process command not a interface command.     EIGRPv6 – Do not forget to enable eigrp under the process.     IPv6 tunnel method with least overhead : IPv6IP     Tunnel protocol numbers for ACL's : IPv6IP = Protocol-41,  &  GRE IPv6 = Protocol-47     You can not redistribute a default static route(::/0) with ospfv3.     Dynamic information (ie IGP next-hops)  recurses to remote link-local address, not the global unicast interface.  

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Post date: 2009-06-23 10:08:55

Post date GMT: 2009-06-23 02:08:55

Post modified date: 2010-07-24 14:28:21

Post modified date GMT: 2010-07-24 06:28:21



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