Configure IPv6 PIM-SM Basic Functions Example

Network Requirements

• The whole network runs the IPv6 PIM-SSM protocol.
• PC1 and PC2 are the two receivers of Device3 stub network.
• Device1 and Device2 are C-BSR and C-RP.
• Run MLDv2 between Device3 and the stub network.

Network Topology

Figure 11-1 Networking of configuring IPv6 PIM-SM basic functions

Configuration Steps

Step 1: Configure VLAN, and add the port to the corresponding VLAN (omitted).

Step 2: Configure the IPv6 address of the interface. (omitted)

Step 3: Enable unicast routing protocol OSPFv3 so that all devices in the network can communicate with each other.

#Configure Device1.

#Configure Device2.

#Configure Device3.

#Query the route table of Device3.

Device3#show ipv6 route 
Codes: C - Connected, L - Local, S - static, R - RIP, B - BGP, i-ISIS 
       U - Per-user Static route 
       O - OSPF, OE-OSPF External, M - Management 
 
 
L ::1/128 [0/0] 
     via ::, 2w6d:04:39:46, lo0
O 2001:1::/64 [110/2] 
     via fe80::201:7aff:fe62:bb7e, 00:00:24, vlan3
C  2001:2::/64 [0/0] 
     via ::, 00:01:05, vlan3
L 2001:2::1/128 [0/0] 
     via ::, 00:01:04, lo0
O 2001:3::/64 [110/2] via fe80::201:7aff:fe62:bb7e, 00:00:24, vlan3 
              [110/2] via fe80::201:7aff:fec0:525a, 00:00:04, vlan5
C  2001:4::/64 [0/0] 
     via ::, 00:00:49, vlan5
L 2001:4::1/128 [0/0] 
     via ::, 00:00:48, lo0
C 2001:5::/64 [0/0] 
     via ::, 00:00:43, vlan6
L 2001:5::1/128 [0/0] 
     via ::, 00:00:42, lo0
C 2001:6::/64 [0/0] 
     via ::, 00:00:43, vlan7
L 2001:6::1/128 [0/0] 
     via ::, 00:00:42, lo0

• ---

  The query methods of Device1 and Device2 are the same as that of Device3, so the query process is omitted.

  ---

Step 4: Globally enable IPv6 multicast forwarding, and enable the multicast protocol IPv6 PIM-SM on the interface.

#Configure Device1.

Globally enable IPv6 multicast forwarding, and enable the multicast protocol IPv6 PIM-SM on the related interface.

#Configure Device2.

Globally enable the IPv6 multicast forwarding, and enable the multicast protocol IPv6 PIM-SM on the related interface.

#Configure Device3.

Globally enable the IPv6 multicast forwarding, and enable the multicast protocol IPv6 PIM-SM on the related interface.

#Query the information about the interface enabled with the IPv6 PIM-SM protocol on Device3, and IPv6 PIM-SM neighbor information.

Device3#show ipv6 pim interface
PIM6 Interface Table: 
PIM6 VRF Name: Default
Total 5 Interface entries 
Total 0 External Interface entry 
Total 0 Sparse-Dense Mode Interface entry 
 
Interface    VIF   Ver/ VIF  Nbr   DR   BSR    CISCO    Neighbor 
             Index Mode Flag Count Pri  Border Neighbor Filter
register_vif0   2     v2/S UP     
Address : fe80::201:7aff:fe5e:6d2d Global Address: ::                
 
vlan3        1      v2/S UP   1     1    FALSE FALSE     
Address : fe80::201:7aff:fe5e:6d2d        Global Address: 2001:2::1               DR: fe80::201:7aff:fe62:bb7e 
 
vlan5      3     v2/S UP   1     1    FALSE FALSE     
Address : fe80::201:7aff:fe5e:6d2e        Global Address: 2001:4::1               DR: fe80::201:7aff:fec0:525a 
 
vlan6      4     v2/S UP   0     1    FALSE FALSE     
Address : fe80::201:7aff:fe5e:6d2f        Global Address: 2001:5::1               DR: fe80::201:7aff:fe5e:6d2f 
 
vlan7      5     v2/S UP   0     1    FALSE FALSE     
Address : fe80::201:7aff:fe5e:6d30        Global Address: 2001:6::1               DR: fe80::201:7aff:fe5e:6d30 
 
Device3#show ipv6 pim neighbor
PIM6 Neighbor Table: 
PIM6 VRF Name: Default
Total 2 Neighbor entries 
 
Neighbor                  Interface   Uptime/Expires     Ver DR 
Address                                                  Priority/Mode 
fe80::201:7aff:fe62:bb7e  vlan3       00:04:01/00:01:29  v2 1 / DR
fe80::201:7aff:fec0:525a  vlan5       00:04:03/00:01:39  v2 1 / DR

• ---

  The query methods of Device1 and Device2 is the same as that of Device3, and the querying process is omitted.

  ---

Step 5: On vlan6 and vlan7 of Device3, enable MLD.

#Configure Device3.

On vlan6 and vlan7 of Device3, enable MLD.

#Query the MLD information of interface vlan6 and vlan7 on Device3.

Device3#show ipv6 mld interface
Interface vlan6 (Index 11) 
 MLD Enabled, Active 
 Querier: fe80::201:7aff:fe5e:6d2f (Self) 
 Default version: 2 
 Querier parameter:  
   Query interval is 125 seconds 
   Querier timeout is 255 seconds 
   Query response time is 10 seconds 
   Last member query response interval is 1 seconds 
   Last member query count is 2  
   Group Membership interval is 260 seconds 
   Robustness variable is 2
Interface vlan7 (Index 12) 
 MLD Enabled, Active 
 Querier: fe80::201:7aff:fe5e:6d30 (Self) 
 Default version: 2 
 Querier parameter:  
   Query interval is 125 seconds 
   Querier timeout is 255 seconds 
   Query response time is 10 seconds 
   Last member query response interval is 1 seconds 
   Last member query count is 2  
   Group Membership interval is 260 seconds 
   Robustness variable is 2

• ---

  You can configure the MLD version running on the interface via the ip v6 mld version command.

  ---

Step 6: Configure the interface vlan3 of Device1 as C-BSR and C-RP, and configure the interface vlan4 of Device2 as C-BSR and C-RP.

#Configure Device1.

Configure interface vlan3 of Device1 as C-BSR and C-RP, the priority of C-BSR is 200, and the multicast group range of the C-RP service is FF10::/16.

#Configure Device2.

Configure interface vlan4 of Device2 as C-BSR and C-RP, the priority of C-BSR is 0, and the multicast group range of the C-RP service is FF00::/8.

#Query the BSR and RP information of Device3.

Device3#show ipv6 pim bsr-router
PIM6v2 Bootstrap information
PIM6 VRF Name: Default 
  BSR address: 2001:2::2 
  BSR Priority: 200 
  Hash mask length: 10 
  Up time: 00:03:04 
  Expiry time: 00:02:06 
  Role: Non-candidate BSR 
  State: Accept Preferred

Device3#show ipv6 pim rp mapping
PIM6 Group-to-RP Mappings Table:
PIM6 VRF Name: Default 
Total 2 RP set entries
Total 2 RP entries 
 
  Group(s): ff00::/8 
  RP count: 1 
    RP: 2001:3::1 
      Info source: 2001:2::2, via bootstrap, priority 192 
      Up time: 00:21:30 
      Expiry time: 00:02:24 
 
  Group(s): ff10::/16 
  RP count: 1 
    RP: 2001:2::2 
      Info source: 2001:2::2, via bootstrap, priority 192 
      Up time: 00:04:31 
      Expiry time: 00:02:24

• ---

  The query methods of Device1 and Device2 are the same as that of Device3, and the query process is omitted.
• When configuring multiple C-BSRs in a multicast domain, BSR will be selected first according to priority, and the C-BSR with the highest priority will be selected as BSR. When the priorities of C-BSRs are the same, the C-BSR with the largest IP address is selected as BSR.
• When multiple C-RPs are configured in a multicast domain and the multicast group range of the service is the same, the corresponding RP of multicast group G will be calculated according to the hash algorithm.
• In the multicast domain, you can configure RP by the command ipv6 pim rp-address, but the static RP addresses configured on all devices of the entire multicast domain are required to be consistent.

  ---

Step 7: Check the result.

#PC1 and PC2 respectively send MLDv2 member relation report to add to multicast group FF10::1 and FF50::1.

#Multicast Server sends the multicast service packet of multicast group FF10::1, FF50::1.

#Query the multicast member table on Device3.

Device3#show ipv6 mld groups MLD Connected Group Membership Total 2 Connected Groups 
Group      Interface  Uptime    Expires  V1-Expires Last Reporter 
ff10::1    vlan6      00:00:09  00:04:13 not used   fe80::210:94ff:fe00:1
ff50::1    vlan7      00:00:09  00:04:14 not used   fe80::210:94ff:fe00:2

#Query the RP of multicast group FF10::1, FF50::1 on Device3.

Device3#show ipv6 pim rp-hash ff10::1 
  PIM6 VRF Name: Default 
  RP: 2001:2::2 
    Info source: 2001:2::2, via bootstrap

Device3#show ipv6 pim rp-hash ff50::1 
  PIM6 VRF Name: Default 
  RP: 2001:3::1 
    Info source: 2001:2::2, via bootstrap

#Query the multicast route table of Device3.

Device3#show ipv6 pim mroute
IP Multicast Routing Table: 
PIM6 VRF Name: Default
Total 0 (*,*,RP) entry
Total 2 (*,G) entries
Total 2 (S,G) entries
Total 2 (S,G,rpt) entries
Total 0 FCR entry 
Up timer/Expiry timer 
 
(*, ff10::1) 
Up time: 00:00:06
RP: 2001:2::2 
RPF nbr: fe80::201:7aff:fe62:bb7e
RPF idx: vlan3 
 
Flags: 
  JOIN DESIRED 
Upstream State: JOINED 
  Local interface list: 
    vlan6 
  Joined interface list: 
  Asserted interface list: 
 
 
(2001:1::1, ff10::1) 
Up time: 00:00:05
KAT time: 00:03:25 
RPF nbr: fe80::201:7aff:fe62:bb7e
RPF idx: vlan3 
SPT bit: TRUE
Flags: 
  JOIN DESIRED 
Upstream State: JOINED 
  Local interface list: 
  Joined interface list: 
  Asserted interface list: 
  Outgoing interface list: 
    vlan6 
  Packet count 0 
 
(2001:1::1, ff10::1, rpt)
Up time: 00:00:05 
RP: 2001:2::2 
Flags: 
  RPT JOIN DESIRED 
  RPF SGRPT XG EQUAL 
Upstream State: NOT PRUNED 
  Local interface list: 
  Pruned interface list: 
  Outgoing interface list: 
 
(*, ff50::1) 
Up time: 00:00:06
RP: 2001:3::1 
RPF nbr: fe80::201:7aff:fec0:525a 
RPF idx: vlan5
Flags: 
  JOIN DESIRED 
Upstream State: JOINED 
  Local interface list: 
    vlan7 
  Joined interface list: 
  Asserted interface list: 
 
(2001:1::1, ff50::1) 
Up time: 00:00:05
KAT time: 00:03:27 
RPF nbr: fe80::201:7aff:fe62:bb7e
RPF idx: vlan3 
SPT bit: TRUE
Flags: 
  JOIN DESIRED 
Upstream State: JOINED 
  Local interface list: 
  Joined interface list: 
  Asserted interface list: 
  Outgoing interface list: 
    vlan7 
  Packet count 1 
 
(2001:1::1, ff50::1, rpt)
Up time: 00:00:05 
RP: 2001:3::1 
Flags: 
  RPT JOIN DESIRED 
  PRUNE DESIRED 
  RPF SGRPT XG EQUAL 
Upstream State: PRUNED 
  Local interface list: 
  Pruned interface list: 
  Outgoing interface list: 
    vlan7

#PC1 can only receive multicast service packets sent by Multicast Server, whose multicast group is FF10::1. PC2 can only receive multicast service packets sent by Multicast Server, whose multicast group is FF50::1.

• ---

  The query methods of Device1 and Device2 are the same as that of Device3, so the query method is omitted.
• By default, the device enables the SPT switching.

  ---