Multicasting – PIM Sparse Mode Test -1

We already discussed about PIM – Sparse Mode in previous posts. Let’s see one basic example for it. I hope it will help to understand PIM Sparse mode practically. For theory part , Plz refer previous post in Multicasting Tab..

In this example, I used Maipu routers. For Cisco Routers the configuration is same.

Maipu 3840 is BSR and RP

Maipu 7508 is receiver router

Multicast Source – 192.168.1.7

Multicast Receiver – 192.168.200.2

We used static Routing for connectivity,  you can use any routing protocol as per requirement. You can use any 3^rd party software or tool like VLC for multicast testing.

Topology:

Multicast PIM -Sparse Mode Setup

Configuration template –

MP 3840- Multicast Source

ip access-list standard 1

 10 permit host 224.0.1.12

 exit

ip multicast-routing

 interface gigaethernet0

 ip address 192.168.1.137 255.255.252.0

 ip pim sparse-mode

 exit

 interface gigaethernet1

 ip address 192.168.100.2 255.255.255.0

 ip pim sparse-mode

 exit       

 ip pim bsr-candidate gigaethernet1

ip pim rp-candidate gigaethernet0 192 60 group-list 1

### We are configuring this router as BSR candidate and RP candidate ###

            

ip route 192.168.200.0 255.255.255.0 192.168.100.1

  

!end

Show Outputs 

MP3840#sh ip pim bsr-router

PIMv2 Bootstrap information

PIM VRF Name: Default

This system is the Bootstrap Router (BSR)   ##Check this information ##

  BSR address: 192.168.100.2

  BSR Priority: 0

  Hash mask length: 10

  Up time: 00:26:00

  Next bootstrap message in 00:00:05

  Role: Candidate BSR

  State: Elected BSR

  Candidate RP: 192.168.1.137(gigaethernet0)

    Advertisement interval 60 secs.

    Next Cand_RP_advertisement in 00:00:53

MP3840#sh ip pim rp mapping

PIM Group-to-RP Mappings Table:

PIM VRF Name: Default

Total 1 RP set entry

Total 1 RP entry

This system is the Bootstrap Router (v2)    ### Check this information ###

  Group(s): 224.0.1.12/32

  RP count: 1

    RP: 192.168.1.137

      Info source: 192.168.100.2, via bootstrap, priority 192

      Up time: 00:25:19

      Expiry time: 00:02:11

MP3840#sh ip pim mroute

IP Multicast Routing Table:

PIM VRF Name: Default

Total 0 (*,*,RP) entry

Total 4 (*,G) entries

Total 1 (S,G) entry

Total 1 (S,G,rpt) entry

Total 0 FCR entry

Up timer/Expiry timer

(*, 224.0.1.12)

Up time: 00:12:29

RP: 192.168.1.137

RPF nbr: 0.0.0.0

RPF idx: None

Upstream State: JOINED

  Local interface list:

  Joined interface list:

    gigaethernet1  00:12:29/00:03:01

  Asserted interface list:

(192.168.1.7, 224.0.1.12)                   ### We can see Multicast S,G entry ###

Up time: 00:25:27

KAT time: 00:02:05

RPF nbr: 0.0.0.0

RPF idx: None

SPT bit: TRUE

Upstream State: JOINED

  Local interface list:

  Joined interface list:

    gigaethernet1  00:12:29/00:03:01

  Asserted interface list:

  Outgoing interface list:

    gigaethernet1

  Packet count 37735

(192.168.1.7, 224.0.1.12, rpt)

Up time: 00:12:29

RP: 192.168.1.137

Upstream State: NOT PRUNED

  Local interface list:

  Pruned interface list:

  Outgoing interface list:

    gigaethernet1

(*, 224.0.1.41)

Up time: 00:46:23

RP: 0.0.0.0 

RPF nbr: 0.0.0.0

RPF idx: None

Upstream State: JOINED

  Local interface list:

    gigaethernet0

  Joined interface list:

  Asserted interface list:

(*, 225.102.116.110)

Up time: 00:46:23

RP: 0.0.0.0

RPF nbr: 0.0.0.0

RPF idx: None

Upstream State: JOINED

  Local interface list:

    gigaethernet0

  Joined interface list:

  Asserted interface list:

(*, 239.255.255.250)

Up time: 00:46:23

RP: 0.0.0.0

RPF nbr: 0.0.0.0

RPF idx: None

Upstream State: JOINED

  Local interface list:

    gigaethernet0

  Joined interface list:

  Asserted interface list:

MP7508 Configuration – Multicast Receiver 

ip multicast-routing

interface gigaethernet0

 ip address 192.168.200.1 255.255.255.0

 ip pim sparse-mode

 exit

 interface gigaethernet1

 ip address 192.168.100.1 255.255.255.0

 ip pim sparse-mode

 exit

                                      

ip route 192.168.0.0 255.255.252.0 192.168.100.2

!end

### As BSR is configured in network, It will be advertised in Multicast network , no need to configure RP ###

MP7508# sh ip pim bsr-router

PIMv2 Bootstrap information

PIM VRF Name: Default

  BSR address: 192.168.100.2                 ### BSR router Information ###

  BSR Priority: 0

  Hash mask length: 10

  Up time: 00:26:57

  Expiry time: 00:01:14

  Role: Non-candidate BSR

  State: Accept Preferred

MP7508#sh ip pim rp mapping

PIM Group-to-RP Mappings Table:

PIM VRF Name: Default

Total 1 RP set entry

Total 1 RP entry

  Group(s): 224.0.1.12/32

  RP count: 1

    RP: 192.168.1.137                                         ### RP information ###

      Info source: 192.168.100.2, via bootstrap, priority 192

      Up time: 00:26:02

      Expiry time: 00:02:29

MP7508#sh ip pim mroute

IP Multicast Routing Table:

PIM VRF Name: Default

Total 0 (*,*,RP) entry

Total 1 (*,G) entry

Total 1 (S,G) entry

Total 1 (S,G,rpt) entry

Total 0 FCR entry

Up timer/Expiry timer

(*, 224.0.1.12)

Up time: 00:13:22

RP: 192.168.1.137

RPF nbr: 192.168.100.2

RPF idx: gigaethernet1

Upstream State: JOINED

  Local interface list:

    gigaethernet0

  Joined interface list:

  Asserted interface list:

(192.168.1.7, 224.0.1.12)                 ### We can see multicast S,G entry , Multicast receiver is active##

Up time: 00:13:22

KAT time: 00:02:22

RPF nbr: 192.168.100.2

RPF idx: gigaethernet1

SPT bit: TRUE

Upstream State: JOINED

  Local interface list:

  Joined interface list:

  Asserted interface list:

  Outgoing interface list:

    gigaethernet0

  Packet count 41562

(192.168.1.7, 224.0.1.12, rpt)

Up time: 00:13:22

RP: 192.168.1.137

Upstream State: NOT PRUNED

  Local interface list:

  Pruned interface list:

  Outgoing interface list:

In this testing I included all outputs; it will help you in practice to compare it.

As I already mentioned above Cisco configuration will be same. If anyone is facing any issue, Plz put comments.

Hope this example will help you in configuring PIM Sparse mode..

For likes and any queries, Plz put comments with your mail id...