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PIM SM configuration and optimal RPs placement

  • 1.  PIM SM configuration and optimal RPs placement

    Posted 02-13-2018 18:22
    Hello, everybody,

    could you please give me some advices for optimal PIM SM configuration. There is a topology map below.

    Situation:

    From Source Server (SCCM) in VLAN Z OS images should be deployed to PCs in VLANs A,B,C,D,E. The customer wants to use PIM in Sparse Mode.

    What are the most appropriate switches for RP and CBSR placement? What a configuration should I apply to X670? Now I have:

    enable igmp
    enable igmp snooping

    enable ipmcforwarding VLAN-A
    enable ipmcforwarding VLAN-B
    enable ipmcforwarding VLAN-C
    enable ipmcforwarding VLAN-D
    enable ipmcforwarding VLAN-E
    enable ipmcforwarding VLAN-Z

    configure pim add vlan VLAN-A
    configure pim add vlan VLAN-B
    configure pim add vlan VLAN-C
    configure pim add vlan VLAN-D
    configure pim add vlan VLAN-E
    configure pim add vlan VLAN-Z

    configure pim crp VLAN-A rp_list
    configure pim crp VLAN-B rp_list
    configure pim crp VLAN-C rp_list
    configure pim crp VLAN-D rp_list
    configure pim crp VLAN-E rp_list
    configure pim crp VLAN-Z rp_list

    configure pim cbsr VLAN-A
    configure pim cbsr VLAN-B
    configure pim cbsr VLAN-C
    configure pim cbsr VLAN-D
    configure pim cbsr VLAN-E
    configure pim cbsr VLAN-Z

    enable pim

    igmp snooping is enables on all switches on the topology. Here are my rp_list.pol file:

    entry rp_list { if match any { } then { nlri 224.0.0.0/4; } }[/code]
    The problem is inter-VLAN multicast doesn't work. Where should I start?

    At the moment C3560 and X670 sees each other as neighbors:

    x670# sh pim vlan "Default"
    PIM SPARSE Interface[1] on VLAN Default is enabled and up
    IP adr: 192.168.21.1 mask: 255.255.255.0 DR of the net: 192.168.21.36
    DR Priority : 1
    Passive : No
    Hello Interval : 30 sec
    Neighbor Time out : 105 sec
    Join/Prune Interval : 60 sec
    Join/Prune holdtime : 210 sec
    Trusted Gateway : none
    CRP group List : rpset with priority 192
    Shutdown priority : 1024
    Source Specific Multicast : Disabled
    State Refresh : Off
    State Refresh Capable : No
    Border : No
    Generation State DR
    Neighbor IP address Id Expires Refresh Priority
    192.168.21.36 0x6c479da 91 No 1

    Packet Statistics (In/Out)
    Hellos 797 77562 Bootstraps 0 394
    Join/Prunes 0 0 Asserts 0 0
    Grafts 0 0 GraftAcks 0 0
    State Refresh 0 0

    x670#

    But I can't see Huawei CX110 as neighbor from X670 for a while...



    Many thanks in advance,
    Ilya



  • 2.  RE: PIM SM configuration and optimal RPs placement

    Posted 02-13-2018 18:32
    Our computer techs image across vlans, we use pim sparse too

    Here's the pim config from our core, we create a loopback (and we make sure we... enable loopback-mode vlan hxloop)
    We configure the cbsr for that loopback

    configure pim add vlan "hxloop" sparse
    configure pim crp vlan "HXloop" "RP-list" 30
    configure pim add vlan "IDF1" sparse
    configure pim add vlan "IDF2" sparse
    configure pim add vlan "MDF" sparse
    enable pim
    configure pim cbsr vlan "HXloop"

    Our RP-list looks this way:

    entry rp-list {
    if match any{
    }
    then {
    nlri 239.0.0.0/8;
    nlri 224.0.0.0/8;
    }
    }

    # sh pim
    PIM Enabled, Version 2
    PIM CRP Enabled on 1 interfaces
    BSR state : ELECTED ; BSR Hash Mask : 255.255.255.252