Continuing with multicast topic i will this time talk about pim sm and autorp. Cisco ios software does not have the ability to enable or disable pim. It is termed protocolindependent because pim does not include its own topology discovery mechanism, but instead uses routing information supplied by other routing protocols. For the love of physics walter lewin may 16, 2011 duration. To solve this issue, pim sparse mode uses a rp rendezvous point in the network. For more information, see the configuring pim or pim6 sparse mode section. Navigate to switch configure routing and dhcp select the interfaces that require multicast routing. Lab 73 routing ip multicast with pim sparse mode learning objectives x implement and verify pimsm operation and adjacencies. I setup vlc on a win xpwont stream out of my win 7 machine machine and streamed a video with rtp to 239. Interface command ip pim sparse mode enables pim sm operation on the selected interface. Igmp is an ipv4 protocol that a host uses to request multicast data for a. Enable pimdm on every interface in every router in the network, using the following interface command.
Igmp v2 is enabled by default on those interfaces, when pim is enabled on the interface. As pim sparse mode is a much wider topic than pim dense mode i will start to talk about pim sparse mode with static rp, than autorp, autorp listener and finally pim bsr. The rp is like a meeting point for multicast traffic. Configure candidate rp intervals to a minimum of 15 seconds. Setting up pim sparse mode network engineering stack exchange. For more information, see configuring pim or pim6 sparse mode. Cisco nexus 7000 series nxos multicast routing command reference, release 5.
Each router that receives multicast traffic from a source will forward it to the rp. How can i verify on the nxos which one will always. Top cisco nexus switches interview questions part 2. Aug 05, 2012 one we have enabled pim sparse mode we configure each router with the following static rp information. The large buffers and routing table sizes of the 3636cr also make this switch. Ex series,m series,mx series,t series,srx series,vsrx. This post is the next part of the previous post called. Before you begin ensure that you have installed the enterprise services license and enabled pim or pim6. Understanding pim sparse mode techlibrary juniper networks. Configuring ip multicast in sparsemode with autorp goal.
Pim control messages are sent as raw ip datagrams protocol number 103, either multicast to the linklocal all pim routers multicast group, or. Multicast across vlans and across layer 3 hops to other campus locations and verify sharedtree stream to the rendezvous point rp. You can change this behaviour by setting the dr priority. Verify that a pim neighborfilter command is configured on all pimenabled interfaces that is referencing the pim neighbor acl similar to the following example. The vdc 2 deletion failed due to incorrect state of services. Basic pim sparse mode configuration a networker blog. Do not configure both autorp and bsr protocols in the same network. Cisco nexus 7000 series nxos multicast routing configuration. Pim sparse mode is having a central point of contact for all multicast host routers. Igmp querier support can now be configured on all ms switches.
Aug 14, 2010 multicast dense might burden the network with too much multicast traffic so you decide to implement multicast sparse mode, hopefully your boss wont find out goal. Basic multicast part 2 pim sparse mode static rp the. Multiple ip pim rpaddress statements with prefixlist dont work as expected conditions. Interface command ip pim sparsemode enables pim sm operation on the selected interface. Cisco nexus 7000 and nexus 7700 licensing router switch blog. This table lists only the software release that introduced support for a. Pimsm sparse mode introduction introduction in a network where ip multicast traffic is transmitted for multimedia applications, such traffic is blocked at routed interface vlan boundaries unless a multicast routing protocol is running. You also need to tell each router the rp, either for all groups or for selected groups using access lists to specify which rp for which groups.
Pim sparsemode is used with static rp allocation for simplicity. Multicast protocolindependent multicast pim spare mode. Feb 16, 2016 pim sparsemode is used with static rp allocation for simplicity. In this post we will see how to configure pimsm sparse mode with static rp configurations. The default pim operational mode on the cisco nexus 7000 switch is ssm. Feb 15, 2016 ip pim sparsemode in global config mode ip pim rpaddress like dense mode, there isnt a ton of configuration at this point to get the basic sparse mode configuration running. Rp configurationyou might have guessed it, but there are multiple ways to configure the rps. Oct 14, 2010 hi, i have a problem to route multicast trafic between 2 vlans on the same nexus 7000. Using the information obtained through igmp, the software maintains a list. The administrator must ensure that a pim neighbor filter is.
Cisco nxos software does not support pim dense mode. Verify that a pim neighborfilter command is configured on all pim enabled interfaces that is referencing the pim neighbor acl similar to the following example. New ms features for largescale networks cisco meraki blog. Prepare well for the interview for different concepts such as cisco nexus product family nexus 9000, nexus 7000, nexus 5000, nexus 3000, nexus 2000, nexus v and mds 9000. Protocol independent multicast pim, which includes sparse mode, bidirectional mode, and sourcespecific mode ssm. Basic multicast part 2 pim sparse mode static rp where i talked about how to configure pim in sparse mode but i also explained and demonstrate the source registration process with the rp as well as spt switchover. Enable pim on the interfaces and specify the mode as sparse. But it is possible to have the standby hsrp link be the dr designated router on the pim side of the house. Ip multicast over eompls it tips for systems and network. The multicast software builds different types of trees to support different multicast methods. Below is a diagram and basic configuration i used for sparsemode multicasting utilizing autorp.
Pim dense mode is less sophisticated than pim sparse mode. Pim sparse mode is based on the pull model or explicit join which use a combination of both a shared tree and a. The scenario is to send ip multicast traffic across eompls pseudowire between pe1 and pe2 routers. The software does not support pim bidir or pim ssm source specific multicast with vpc. As the routers will receive the request from host to join particular multicast group, they will check the multicast routing table which is received from pim and in case of the router is not aware, the request will be forwarded to rp rendezvous point. Hi, i have a problem to route multicast trafic between 2 vlans on the same nexus 7000. Cisco nxos software for the nexus 7000 series devices does. What is the equivalent nxos command for the ip multicastrouting ios command, and does the nexus 7000 support pimsparse mode.
Protocol independent multicast sparsemode pimsm is a protocol for efficiently routing internet protocol ip packets to multicast groups that may span widearea and interdomain internets. Srx configuration example multicast pim sparse mode. Pim sm sparse mode is fully interoperable with vpc. If the downstream access switch is a not a cisco nexus device, disable the lacp gracefulconvergence option. Acx series,t series,mx series,ptx series,qfx series,srx series,vsrx,nfx series. They do have a ip pimsm command which does enable pim sprase. Configure ospf on all routers, advertise all networks. Multicast configuration comparison of cisco ios and nexus os. Protocolindependent multicast pim is a family of multicast routing protocols for internet protocol ip networks that provide onetomany and manytomany distribution of data over a lan, wan or the internet. Cisco nexus 9000 series nxos multicast routing configuration.
We have provided answers for the differences between nexus and catalyst switches but also compare. Cisco nexus 7000 and nexus 7700 series power supply options. When i issue the show ip route bgp command, i see my routes being learned via ospf and bgp. Pimsm is fully interoperable with vrrp to quickly transition multicast routes in the event of a failover. Similarly, bidirectional pim may be used on its own, or it may be used in conjunction with one or both of pim sparse mode and pim dense mode. General improvements to protocol flexibility and efficiency 59. Each router that wants to receive multicast traffic will go to the rp.
A rendezvous point rp is a role that a device performs when operating in protocol independent multicast pim sparse mode sm. An additional command is the spt threshold, the default value 0 results in switching to the shortestpath tree spt soon after receipt of the first multicast packet for the group. You can also check to see whether the router sees the multicast joins by issuing show ip mroute it should also list the rp. Pimsm is compatible with igmp version 2, and is fully interoperable with igmp for determining multicast flows.
Table 17 nexus 7000 and nexus 7700 software licensing features. Jun 07, 20 for the love of physics walter lewin may 16, 2011 duration. Pim sparse mode uses a rendezvous point rp, whereby all routers indicate there desire to join a particular multicast stream to the rp. Below is a diagram and basic configuration i used for sparse mode multicasting utilizing autorp. Configuring ip multicast in sparse mode with autorp goal. Cisco nexus 7000 series nxos multicast routing configuration guide. Configuration the eompls configuration on pe1 and pe2 routers is as follows eompls configuration pe1 router. Need a good job interview preparation material with answers. So we can define rp via static, autorp and another method.
Cisco ios software does not have the ability to enable the pim anycast rp feature. May 04, 2011 pim sparse mode similar to shared tree. In nxos, multicast is enabled only after enabling the pim or pim6 feature on each router and then enabling pim or pim6 sparse mode on each interface that you want to participate in. Intermediate systemtointermediate system isis protocol layer 3 only. Apr 04, 2018 cisco nexus 7000 and nexus 7700 modular switches, the main chassis. The command ip multicastrouting must be enabled in cisco nxos software before any multicast configuration is possible on the switch. Cisco nexus 7000 series configuration manual pdf download. Multicast routing support is now available on the ms350 and ms400 series, enabling larger scale networks to handle routing of multicast traffic via pim sparse mode. All pim protocols share a common control message format.
Pim dense mode is useful for multicast lan applications, the main environment for all dense mode protocols. Multicast dense might burden the network with too much multicast traffic so you decide to implement multicast sparse mode, hopefully your boss wont find out goal. Pimsm multicast and hsrpvrrp network engineering stack. Jul 31, 2017 see the cisco nexus 7000 series nxos multicast routing command reference, release 5. Learn vocabulary, terms, and more with flashcards, games, and other study tools. When the vdc containing a very large number of svi interfaces interface vlans with pim protocol enabled ip pim sparsemode and with large amount of multicast.
In this post we will see how to configure pim sm sparse mode with static rp configurations. Cisco nxos software for the nexus 7000 series devices does not support pim ssm or bidr on vpcs cisco nxos software fully supports pim asm on vpcs igmp snooping does a layer 3 ip lookup by default, vs. When the vdc containing a very large number of svi interfaces interface vlans with pim protocol enabled ip pim sparse mode and with large amount of multicast routes show ip mroute summary. See the cisco nexus 7000 series nxos multicast routing command reference, release 5.
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