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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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Example: Spanned L3 VLAN IIF

This section describes how to configure VLT multicast routing in a four-node setup—core, AG1, AG2, and ToR—using the topology shown in the following figure:

  • Core, AG1, and AG2 are multicast routers in a VLT domain.
  • ToR is an IGMP-enabled L2 switch.
  • OSPF is the unicast routing protocol.
Example: Spanned L3 VLAN IIF

Sample configuration on core:

core# configure terminal
core(config)# ip multicast-routing 
core(config)# ip pim rp-address 103.0.0.3 group-address 224.0.0.0/4
core(config)# router ospf 100
core(config-router-ospf-100)# exit

core(config)# interface ethernet 1/1/32:1
core(conf-if-eth1/1/32:1)# no shutdown
core(conf-if-eth1/1/32:1)# no switchport
core(conf-if-eth1/1/32:1)# ip address 16.0.0.1/24
core(conf-if-eth1/1/32:1)# flowcontrol receive off
core(conf-if-eth1/1/32:1)# ip pim sparse-mode
core(conf-if-eth1/1/32:1)# ip ospf 100 area 0.0.0.0
core(conf-if-eth1/1/32:1)# exit

core(config)# interface vlan 12
core(conf-if-vl-12)# no shutdown
core(conf-if-vl-12)# ip address 12.0.0.3/24
core(conf-if-vl-12)# ip pim sparse-mode
core(conf-if-vl-12)# ip pim dr-priority 1000
core(conf-if-vl-12)# ip ospf 100 area 0.0.0.0
core(conf-if-vl-12)# exit

core(config)# interface loopback 103
core(conf-if-lo-103)# no shutdown
core(conf-if-lo-103)# ip address 103.0.0.3/32
core(conf-if-lo-103)# ip pim sparse-mode
core(conf-if-lo-103)# ip ospf 100 area 0.0.0.0
core(conf-if-lo-103)# exit

PIM neighbors of core and the interface to reach the neighbors

The show ip pim neighbor command displays the PIM neighbors of core and the interface to reach the neighbors.

core# show ip pim neighbor
Neighbor Address Interface Uptime/Expires      Ver  DR Priority / Mode
----------------------------------------------------------------------
12.0.0.1         vlan12    00:01:06/00:01:43   v2   10         / S
12.0.0.2         vlan12    00:01:03/00:01:42   v2   10         / S

PIM states in core

The output of the show ip pim tib command.

core# show ip pim tib
PIM Multicast Routing Table
Flags: S - Sparse, C - Connected, L - Local, P - Pruned,
       R - RP-bit set, F - Register Flag, T - SPT-bit set, J - Join SPT,
       K - Ack-Pending state
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode

(*, 225.1.1.1), uptime 00:04:16, expires 00:00:00, RP 103.0.0.3, flags: S
  Incoming interface:  Null, RPF neighbor 0.0.0.0
  Outgoing interface list:
    vlan12  Forward/Sparse  00:04:16/00:03:13

The following show command output displays traffic after flow is initiated:

The show ip pim tib command output displays the PIM tree information base (TIB).

core# show ip pim tib
PIM Multicast Routing Table
Flags: S - Sparse, C - Connected, L - Local, P - Pruned,
       R - RP-bit set, F - Register Flag, T - SPT-bit set, J - Join SPT,
       K - Ack-Pending state
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode

(*, 225.1.1.1), uptime 00:09:54, expires 00:00:00, RP 103.0.0.3, flags: S
  Incoming interface:  Null, RPF neighbor 0.0.0.0
  Outgoing interface list:
    vlan12  Forward/Sparse  00:09:54/00:02:35


(16.0.0.10, 225.1.1.1), uptime 00:00:34, expires 00:02:55, flags: FT
  Incoming interface: ethernet1/1/32:1, RPF neighbor 0.0.0.0
  Outgoing interface list:
    vlan12  Forward/Sparse  00:00:34/00:02:55

The show ip pim mcache command output displays multicast route entries.

core# show ip pim mcache
PIM Multicast Routing Cache Table

(16.0.0.10, 225.1.1.1)
  Incoming interface : ethernet1/1/32:1
  Outgoing interface list :
   vlan12

Sample configuration on AG1:

AG1# configure terminal
AG1(config)# ip multicast-routing 
AG1 (config)# ip pim rp-address 103.0.0.3 group-address 224.0.0.0/4
AG1(config)# router ospf 100
AG1(config-router-ospf-100)# exit

AG1(config)# vlt-domain 255
AG1(conf-vlt-255)# backup destination 10.16.132.147
AG1(conf-vlt-255)# discovery-interface ethernet1/1/31:1,1/1/31:4
AG1(conf-vlt-255)# peer-routing 
AG1(conf-vlt-255)# primary-priority 1
AG1(conf-vlt-255)# vlt-mac 00:00:00:11:11:11
AG1(conf-vlt-255)# exit

AG1(config)# interface ethernet 1/1/32:1
AG1(conf-if-eth1/1/32:1)# no shutdown
AG1(conf-if-eth1/1/32:1)# no switchport
AG1(conf-if-eth1/1/32:1)# ip address 16.0.0.1/24
AG1(conf-if-eth1/1/32:1)# flowcontrol receive off
AG1(conf-if-eth1/1/32:1)# ip pim sparse-mode
AG1(conf-if-eth1/1/32:1)# ip ospf 100 area 0.0.0.0
AG1(conf-if-eth1/1/32:1)# exit

AG1(config)# interface vlan 11
AG1(conf-if-vlan-11)# no shutdown
AG1(conf-if-vlan-11)# ip address 11.0.0.1/24
AG1(conf-if-vlan-11)# ip pim sparse-mode
AG1(conf-if-vlan-11)# ip pim dr-priority 1000
AG1(conf-if-vlan-11)# ip ospf 100 area 0.0.0.0
AG1(conf-if-vlan-11)# ip ospf cost 3000
AG1(conf-if-vlan-11)# exit

AG1(config)# interface vlan 12
AG1(conf-if-vlan-12)# no shutdown
AG1(conf-if-vlan-12)# ip address 12.0.0.1/24
AG1(conf-if-vlan-12)# ip pim sparse-mode
AG1(conf-if-vlan-12)# ip pim dr-priority 10
AG1(conf-if-vlan-12)# ip ospf 100 area 0.0.0.0
AG1(conf-if-vlan-12)# exit

AG1(config)# interface vlan 13
AG1(conf-if-vlan-13)# no shutdown
AG1(conf-if-vlan-13)# ip address 13.0.0.1/24
AG1(conf-if-vlan-13)# ip pim sparse-mode
AG1(conf-if-vlan-13)# ip pim dr-priority 10
AG1(conf-if-vlan-13)# ip ospf 100 area 0.0.0.0
AG1(conf-if-vlan-13)# ip ospf cost 4000
AG1(conf-if-vlan-13)# exit

AG1(config)# interface loopback 101
AG1(conf-if-lo-101)# no shutdown
AG1(conf-if-lo-101)# ip address 101.0.0.1/32
AG1(conf-if-lo-101)# ip pim sparse-mode
AG1(conf-if-lo-101)# ip ospf 100 area 0.0.0.0
AG1(conf-if-lo-101)# exit

AG1(config)# interface port-channel11
AG1(conf-if-po-11)# no shutdown
AG1(conf-if-po-11)# switchport mode trunk
AG1(conf-if-po-11)# switchport trunk allowed vlan 11
AG1(conf-if-po-11)# vlt-port-channel 11
AG1(conf-if-po-11)# exit

AG1(config)# interface port-channel12
AG1(conf-if-po-12)# no shutdown
AG1(conf-if-po-12)# switchport mode trunk
AG1(conf-if-po-12)# switchport access vlan 1
AG1(conf-if-po-12)# switchport trunk allowed vlan 12
AG1(conf-if-po-12)# vlt-port-channel 12
AG1(conf-if-po-12)# exit

PIM neighbors of AG1 and the interface to reach the neighbors

The show ip pim neighbor command displays the PIM neighbors of AG1 and the interface to reach the neighbors.

AG1# show ip pim neighbor
Neighbor Address Interface Uptime/Expires     Ver  DR Priority / Mode
----------------------------------------------------------------------
11.0.0.2         vlan11    00:00:43/00:01:33  v2    10         / S
12.0.0.2         vlan12    00:01:01/00:01:44  v2    10         / S
12.0.0.3         vlan12    00:01:01/00:01:43  v2    1000       / DR S
13.0.0.2         vlan13    00:01:02/00:01:42  v2    1000       / DR S

IGMP and PIM states in AG1

The show ip igmp groups command output displays the IGMP database.

AG1# show ip igmp groups
Total Number of Groups: 1
IGMP Connected Group Membership
Group Address                 Interface           Mode                Uptime              Expires             Last Reporter
225.1.1.1                     vlan11              Exclude             00:01:55            00:01:53            0.0.0.0

The show ip pim tib command output displays the PIM tree information base (TIB).

AG1# show ip pim tib

PIM Multicast Routing Table
Flags: S - Sparse, C - Connected, L - Local, P - Pruned,
       R - RP-bit set, F - Register Flag, T - SPT-bit set, J - Join SPT,
       K - Ack-Pending state
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode

(*, 225.1.1.1), uptime 00:02:05, expires 00:00:54, RP 103.0.0.3, flags: SCJ
  Incoming interface: vlan12, RPF neighbor 12.0.0.3
  Outgoing interface list:
    vlan11  Forward/Sparse  00:02:05/Never

The show ip pim mcache command output displays multicast route entries.

AG1# show ip pim mcache
PIM Multicast Routing Cache Table

(*, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

AG1-VLT-NODE-1# show ip pim mcache vlt
PIM Multicast Routing Cache Table
Flags: S - Synced

(*, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

The following show command output displays traffic after traffic flow is established:

The show ip pim tib command shows the PIM tree information base.

AG1# show ip pim tib

PIM Multicast Routing Table
Flags: S - Sparse, C - Connected, L - Local, P - Pruned,
       R - RP-bit set, F - Register Flag, T - SPT-bit set, J - Join SPT,
       K - Ack-Pending state
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode

(*, 225.1.1.1), uptime 00:10:15, expires 00:00:44, RP 103.0.0.3, flags: SCJ
  Incoming interface: vlan12, RPF neighbor 12.0.0.3
  Outgoing interface list:
    vlan11  Forward/Sparse  00:10:15/Never


(16.0.0.10, 225.1.1.1), uptime 00:00:55, expires 00:02:34, flags: CT
  Incoming interface: vlan12, RPF neighbor 12.0.0.3
  Outgoing interface list:
    vlan11  Forward/Sparse  00:00:55/Never

The show ip pim mcache command displays the multicast route entries.

AG1# show ip pim mcache
PIM Multicast Routing Cache Table

(*, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

(16.0.0.10, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

The show ip pim mcache vlt command displays multicast route entries.

AG1# show ip pim mcache vlt
PIM Multicast Routing Cache Table
Flags: S - Synced

(*, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

(16.0.0.10, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

Sample configuration on AG2:

AG2# configure terminal
AG2(config)# ip multicast-routing 
AG2 (config)# ip pim rp-address 103.0.0.3 group-address 224.0.0.0/4
AG2(config)# router ospf 100
AG2(config-router-ospf-100)# exit

AG2(config)# vlt-domain 255
AG2(conf-vlt-255)# backup destination 10.16.132.153
AG2(conf-vlt-255)# discovery-interface ethernet1/1/31:1,1/1/31:4
AG2(conf-vlt-255)# peer-routing 
AG2(conf-vlt-255)# vlt-mac 00:00:00:11:11:11
AG2(conf-vlt-255)# exit

AG2(config)# interface ethernet 1/1/32:1
AG2(conf-if-eth1/1/32:1)# no shutdown
AG2(conf-if-eth1/1/32:1)# no switchport
AG2(conf-if-eth1/1/32:1)# ip address 16.0.0.1/24
AG2(conf-if-eth1/1/32:1)# flowcontrol receive off
AG2(conf-if-eth1/1/32:1)# ip pim sparse-mode
AG2(conf-if-eth1/1/32:1)# ip ospf 100 area 0.0.0.0
AG2(conf-if-eth1/1/32:1)# exit

AG2(config)# interface vlan 11
AG2(conf-if-vlan-11)# no shutdown
AG2(conf-if-vlan-11)# ip address 11.0.0.2/24
AG2(conf-if-vlan-11)# ip pim sparse-mode
AG2(conf-if-vlan-11)# ip pim dr-priority 10
AG2(conf-if-vlan-11)# ip ospf 100 area 0.0.0.0
AG2(conf-if-vlan-11)# ip ospf cost 3000
AG2(conf-if-vlan-11)# exit

AG2(config)# interface vlan 12
AG2(conf-if-vlan-12)# no shutdown
AG2(conf-if-vlan-12)# ip address 12.0.0.2/24
AG2(conf-if-vlan-12)# ip pim sparse-mode
AG2(conf-if-vlan-12)# ip pim dr-priority 10
AG2(conf-if-vlan-12)# ip ospf 100 area 0.0.0.0
AG2(conf-if-vlan-12)# exit

AG2(config)# interface vlan 13
AG2(conf-if-vlan-13)# no shutdown
AG2(conf-if-vlan-13)# ip address 13.0.0.2/24
AG2(conf-if-vlan-13)# ip pim sparse-mode
AG2(conf-if-vlan-13)# ip pim dr-priority 1000
AG2(conf-if-vlan-13)# ip ospf 100 area 0.0.0.0
AG2(conf-if-vlan-13)# ip ospf cost 4000
AG2(conf-if-vlan-13)# exit

AG2(config)# interface loopback 102
AG2(conf-if-lo-102)# no shutdown
AG2(conf-if-lo-102)# ip address 102.0.0.2/32
AG2(conf-if-lo-102)# ip pim sparse-mode
AG2(conf-if-lo-102)# ip ospf 100 area 0.0.0.0
AG2(conf-if-lo-102)# exit

AG2(config)# interface port-channel11
AG2(conf-if-po-11)# no shutdown
AG2(conf-if-po-11)# switchport mode trunk
AG2(conf-if-po-11)# switchport access vlan 1
AG2(conf-if-po-11)# switchport trunk allowed vlan 11
AG2(conf-if-po-11)# vlt-port-channel 11
AG2(conf-if-po-11)# exit

AG2(config)# interface port-channel12
AG2(conf-if-po-12)# no shutdown
AG2(conf-if-po-12)# switchport mode trunk
AG2(conf-if-po-12)# switchport access vlan 1
AG2(conf-if-po-12)# switchport trunk allowed vlan 12
AG2(conf-if-po-12)# vlt-port-channel 12
AG2(conf-if-po-12)# exit

PIM neighbors of AG2 and the interface to reach the neighbors

The show ip pim neighbor command displays the PIM neighbors of AG2 and the interface to reach the neighbors.

AG2# show ip pim neighbor
Neighbor Address  Interface  Uptime/Expires     Ver DR Priority / Mode
-----------------------------------------------------------------------
11.0.0.1          vlan11     00:00:38/00:01:36  v2   1000       / DR S
12.0.0.1          vlan12     00:01:00/00:01:19  v2   10         / S
12.0.0.3          vlan12     00:01:06/00:01:18  v2   1000       / DR S
13.0.0.1          vlan13     00:01:00/00:01:19  v2   10         / S

IGMP and PIM states in AG2

The show ip igmp groups command output displays the IGMP database.

AG2# show ip igmp groups
Total Number of Groups: 1
IGMP Connected Group Membership
Group Address                 Interface           Mode                Uptime              Expires             Last Reporter
225.1.1.1                     vlan11              Exclude             00:02:00            00:01:47            0.0.0.0

The output of the show ip pim tib command.

AG2# show ip pim tib

PIM Multicast Routing Table
Flags: S - Sparse, C - Connected, L - Local, P - Pruned,
       R - RP-bit set, F - Register Flag, T - SPT-bit set, J - Join SPT,
       K - Ack-Pending state
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode

(*, 225.1.1.1), uptime 00:02:15, expires 00:00:00, RP 103.0.0.3, flags: SC
  Incoming interface: vlan12, RPF neighbor 12.0.0.3
  Outgoing interface list:
    vlan11  Forward/Sparse  00:02:15/Never

The show ip pim mcache command output displays multicast route entries.

AG2# show ip pim mcache
PIM Multicast Routing Cache Table

(*, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

AG2# show ip pim mcache vlt
PIM Multicast Routing Cache Table
Flags: S - Synced

(*, 225.1.1.1),flags: S
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11 (S)

The following show command output displays the synchronized states after traffic flow is established:

AG2# show ip pim tib

PIM Multicast Routing Table
Flags: S - Sparse, C - Connected, L - Local, P - Pruned,
       R - RP-bit set, F - Register Flag, T - SPT-bit set, J - Join SPT,
       K - Ack-Pending state
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode

(*, 225.1.1.1), uptime 00:10:30, expires 00:00:00, RP 103.0.0.3, flags: SC
  Incoming interface: vlan12, RPF neighbor 12.0.0.3
  Outgoing interface list:
    vlan11  Forward/Sparse  00:10:30/Never

AG2# show ip pim mcache
PIM Multicast Routing Cache Table

(*, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

(16.0.0.10, 225.1.1.1)
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11

AG2# show ip pim mcache vlt
PIM Multicast Routing Cache Table
Flags: S - Synced

(*, 225.1.1.1),flags: S
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11 (S)

(16.0.0.10, 225.1.1.1),flags: S
  Incoming interface : vlan12
  Outgoing interface list :
   vlan11 (S)

Sample configuration on TOR:

TOR# configure terminal
TOR(config)# ip igmp snooping enable

TOR(config)# interface vlan 11
TOR(conf-if-vlan-11)# no shutdown
TOR(conf-if-vlan-11)# exit

TOR(config)# interface port-channel 11
TOR(conf-if-po-11)# no shutdown
TOR(conf-if-po-11)# switchport mode trunk
TOR(conf-if-po-11)# switchport access vlan 1
TOR(conf-if-po-11)# switchport trunk allowed vlan 11
TOR(conf-if-po-11)# exit

TOR(config)# interface ethernet 1/1/32:1
TOR(conf-if-eth1/1/32:1)# no shutdown
TOR(conf-if-eth1/1/32:1)# switchport mode trunk
TOR(conf-if-eth1/1/32:1)# switchport access vlan 1
TOR(conf-if-eth1/1/32:1)# switchport trunk allowed vlan 11
TOR(conf-if-eth1/1/32:1)# flowcontrol receive off
TOR(conf-if-eth1/1/32:1)# exit

IGMP snooping information on TOR

The following command displays IGMP snooping groups membership details:

ToR# show ip igmp snooping groups
Total Number of Groups: 1
IGMP Connected Group Membership
Group Address                 Interface           Mode                Expires
225.1.1.1                     vlan11              IGMPv2-Compat       00:02:09
  Member-ports :ethernet1/1/32:1

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