{"id":696,"date":"2018-10-26T22:27:57","date_gmt":"2018-10-26T22:27:57","guid":{"rendered":"http:\/\/feralpacket.org\/?p=696"},"modified":"2018-10-26T22:27:57","modified_gmt":"2018-10-26T22:27:57","slug":"multicast-bootstrap-router-bsr-notes","status":"publish","type":"post","link":"https:\/\/feralpacket.org\/?p=696","title":{"rendered":"Multicast Bootstrap Router (BSR) Notes"},"content":{"rendered":"

Multicast Bootstrap Router (BSR)<\/span><\/p>\n

\u00a0– Open standard<\/p>\n

\u00a0– PIM version 2 messages<\/p>\n

\u00a0– RP information is distributed by BSR<\/p>\n

\u00a0– If there are multiple RPs, then priorities are checked<\/p>\n

\u00a0 \u00a0 \u00a0-> Lower is better<\/p>\n

\u00a0– If there are multiple BSRs, then higher priority is better<\/p>\n

\u00a0 \u00a0 \u00a0-> Then higher IP address<\/p>\n

Hask-mask<\/span><\/p>\n

\u00a0– Sent by BSR<\/p>\n

\u00a0 \u00a0 \u00a0-> A value between 0 – 32<\/p>\n

\u00a0 \u00a0 \u00a0-> Default is 0<\/p>\n

Group Address and RP<\/span><\/p>\n

\u00a0– Value1 = f (Hash and group, RP1)<\/p>\n

\u00a0– Value2 = f (Hash and group, RP2)<\/p>\n

Configuring RP<\/span><\/p>\n

ip pim rp-candidate <int> [group-list <acl>] [interval <sec>] [priority <value>]<\/span><\/p>\n

Configuring BSR<\/span><\/p>\n

\u00a0<\/p>\n

ip pim bsr-candidate <int> [interval <sec>] [<hask-mask-length>] [priority <value>]<\/span><\/p>\n

R2(config)# ip pim rp-candidate lo0<\/span><\/p>\n

R3(config)# ip pim bsr-candidate lo0<\/span><\/p>\n

RP-Announce Filter<\/span><\/p>\n

\u00a0– Controls which routers can become RPs<\/p>\n

Configuring MA<\/p>\n

ip pim rp-announce-filter rp-list <acl> [group-list <acl>]<\/span><\/p>\n

\u00a0– rp-list <acl><\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> Permit – filter the RP<\/p>\n

\u00a0 \u00a0 \u00a0-> Deny – allow the RP<\/p>\n

\u00a0 \u00a0 \u00a0-> Reverse logic<\/p>\n

Multicast Data Plane Filtering<\/span><\/p>\n

int fa0\/0<\/span><\/p>\n

\u00a0ip multicast rate-limit { in | out } [limit <kbps>] [source-list <acl>] group-list <acl>]<\/span><\/p>\n

<\/p>\n

Auto-RP Filtering<\/span><\/p>\n

\u00a0– On boundary ports to other organizations, RP announce | discovery messages should be filtered and PIM should not be exchanged<\/p>\n

\u00a0 \u00a0 \u00a0-> But you still may want to allow multicast traffic<\/p>\n

R3(config)# int s0\/0<\/span><\/p>\n

\u00a0ip multicast boundary <acl> [filter-autorp] [in | out]<\/span><\/p>\n

\u00a0– <acl><\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> Group for which traffic will be controlled<\/p>\n

By default, incoming control plane and outgoing data plane traffic is controlled<\/p>\n

Instructor comment, “BSR is better method because is doesn’t need dense mode.”<\/p>\n

BSR Filtering on Boundary<\/span><\/p>\n

\u00a0– Specifically filters PIM traffic<\/p>\n

int s0\/0<\/span><\/p>\n

\u00a0ip pim bsr-boundary<\/span><\/p>\n

sh ip mroute<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> You enabled multicast routing, right?<\/p>\n

sh ip pim int<\/span><\/p>\n

sh ip pim autorp<\/span><\/p>\n

sh ip pim rp mapping<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> “This system is an RP-mapping agent.”<\/p>\n","protected":false},"excerpt":{"rendered":"

Multicast Bootstrap Router (BSR)<\/p>\n","protected":false},"author":1,"featured_media":695,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[55,46,31],"class_list":["post-696","post","type-post","status-publish","format-standard","hentry","category-ccie","tag-bsr","tag-multicast","tag-published"],"_links":{"self":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=696"}],"version-history":[{"count":1,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/696\/revisions"}],"predecessor-version":[{"id":702,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/696\/revisions\/702"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/media\/695"}],"wp:attachment":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}