How to configure PIM-DIM on Ruijie Switch?
Introduction of PIM-DIMPIM (Protocol Independent Multicast) is a multicast routing protocol that does not depend on a specific unicast routing protocol, and can use the unicast routing table established by any unicast routing protocol to perform RPF checking functions to establish multicast routes. Because PIM does not require sending and receiving multicast routing updates, it has much lower overhead than other multicast routing protocols.
PIM defines two modes: Dense Mode and Sparse Mode
Applied scenario:
PIM-DM (Protocol Independent Multicast-Dense Mode), which is the dense mode of PIM, is suitable for small networks with relatively concentrated multicast members.
Case of configuration
a) Requirement
1) S5750-H-1, S5750-H-2 and S5750-H-3 are three core devices. They are interconnected using a Layer 3 port and run OSPF, process 110, and all belong to area 0
2) The user PC's gateway is on S5750-H-1 and the multicast server is directly connected to S5750-H-2, which are each republished into the OSPF process
3) Layer 3 multicast routing protocol PIM-DM should be enabled on the S5750-H-1, S5750-H-2 and S5750-H-3 switches
4) Layer 2 multicast routing protocol IVGL to be enabled on the SS2928G-E switch
5) The PC downlinked by S29E is able to make on-demand video inside the multicast server
b) Network Topology
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C) Configuration:
Configurations on Core Switches
S5750-H-1:
1) Create VLAN 10, user gateway SVI address, trunk configuration with access switches, and IP address configuration with other core switches for Layer 3 interconnection
S5750-H-1>enable
S5750-H-1#configure terminal
S5750-H-1(config)#vlan 10
S5750-H-1(config-vlan)#exit
S5750-H-1(config)#interface vlan 10
S5750-H-1(config-if-VLAN 10)#ip address 192.168.1.254 255.255.255.0
S5750-H-1(config-if-VLAN 10)#exit
S5750-H-1(config)#interface gigabitEthernet 0/1
S5750-H-1(config-if-GigabitEthernet 0/1)#switchport mode trunk
S5750-H-1(config-if-GigabitEthernet 0/1)#exit
S5750-H-1(config)#interface gigabitEthernet 0/2
S5750-H-1(config-if-GigabitEthernet 0/2)#no switchport
S5750-H-1(config-if-GigabitEthernet 0/2)#ip address 172.16.12.1 255.255.255.252
S5750-H-1(config-if-GigabitEthernet 0/2)#exit
S5750-H-1(config)#interface gigabitEthernet 0/3
S5750-H-1(config-if-GigabitEthernet 0/3)#no switchport
S5750-H-1(config-if-GigabitEthernet 0/3)#ip address 172.16.13.1 255.255.255.252
S5750-H-1(config-if-GigabitEthernet 0/3)#exit
S5750-H-1(config)#interface loopback 0
S5750-H-1(config-if-Loopback 0)#ip address 1.1.1.1 255.255.255.255
S5750-H-1(config-if-Loopback 0)#exit
2) Configure OSPF Routing for the S5750-H-1
S5750-H-1(config)#router ospf 110
S5750-H-1(config-router)#router-id 1.1.1.1
Change router-id and update OSPF process! :y
S5750-H-1(config-router)#network 172.16.12.0 0.0.0.3 area 0
S5750-H-1(config-router)#network 172.16.13.0 0.0.0.3 area 0
S5750-H-1(config-router)#network 192.168.1.0 0.0.0.255 area 0
S5750-H-1(config-router)#exit
3) Configure Multicast Routing for the S5750-H-1
S5750-H-1(config)#ip multicast-routing
S5750-H-1(config)#interface vlan 10
S5750-H-1(config-if-VLAN 10)#ip pim dense-mode
S5750-H-1(config-if-VLAN 10)#exit
S5750-H-1(config)#interface gigabitEthernet 0/2
S5750-H-1(config-if-GigabitEthernet 0/2)#ip pim dense-mode
S5750-H-1(config-if-GigabitEthernet 0/2)#exit
S5750-H-1(config)#interface gigabitEthernet 0/3
S5750-H-1(config-if-GigabitEthernet 0/3)#ip pim dense-mode
S5750-H-1(config-if-GigabitEthernet 0/3)#end
S5750-H-1#wr
S5750-H-2:
1) Create VLAN 20, multicast server gateway SVI address, multicast server connection port set to access vlan 20, layer 3 interconnect IP address configuration with other core switches:
S5750-H-2#configure terminal
S5750-H-2(config)#vlan 20
S5750-H-2(config-vlan)#exit
S5750-H-2(config)#interface vlan 20
S5750-H-2(config-if-VLAN 20)#ip address 192.168.20.254 255.255.255.0
S5750-H-2(config-if-VLAN 20)#exit
S5750-H-2(config)#interface gigabitEthernet 0/1
S5750-H-2(config-if-GigabitEthernet 0/1)#switchport access vlan 20
S5750-H-2(config-if-GigabitEthernet 0/1)#exit
S5750-H-2(config)#interface gigabitEthernet 0/2
S5750-H-2(config-if-GigabitEthernet 0/2)#no switchport
S5750-H-2(config-if-GigabitEthernet 0/2)#ip address 172.16.12.2 255.255.255.252
S5750-H-2(config-if-GigabitEthernet 0/2)#exit
S5750-H-2(config)#interface gigabitEthernet 0/4
S5750-H-2(config-if-GigabitEthernet 0/4#no switchport
S5750-H-2(config-if-GigabitEthernet 0/4#ip address 172.16.23.1 255.255.255.252
S5750-H-2(config-if-GigabitEthernet 0/4)#exit
S5750-H-2(config)#interface loopback 0
S5750-H-2(config-if-Loopback 0)#ip address 2.2.2.2 255.255.255.255
S5750-H-2(config-if-Loopback 0)#exit
2) Configure OSPF Routing for the S5750-H-2
S5750-H-2(config)#router ospf 110
S5750-H-2(config-router)#router-id 2.2.2.2
Change router-id and update OSPF process! :y
S5750-H-2(config-router)#network 172.16.12.0 0.0.0.3 area 0
S5750-H-2(config-router)#network 172.16.23.0 0.0.0.3 area 0
S5750-H-2(config-router)#network 192.168.20.0 0.0.0.255 area 0
S5750-H-2(config-router)#exit
3) Configure Multicast Routing for the S5750-H-2
S5750-H-2(config)#ip multicast-routing
S5750-H-2(config)#interface vlan 20
S5750-H-2(config-if-VLAN 20)#ip pim dense-mode
S5750-H-2(config-if-VLAN 20)#exit
S5750-H-2(config)#interface gigabitEthernet 0/2
S5750-H-2(config-if-GigabitEthernet 0/2)#ip pim dense-mode
S5750-H-2(config-if-GigabitEthernet 0/2)#exit
S5750-H-2(config)#interface gigabitEthernet 0/4
S5750-H-2(config-if-GigabitEthernet 0/4)#ip pim dense-mode
S5750-H-2(config-if-GigabitEthernet 0/4)#end
S5750-H-2#wr
S5750-H-3
1) Create a Layer 3 interconnect IP address configuration with other core switches:
S5750-H-3#configure terminal
S5750-H-3(config)#interface gigabitEthernet 0/3
S5750-H-3(config-if-GigabitEthernet 0/3)#no switchport
S5750-H-3(config-if-GigabitEthernet 0/3)#ip address 172.16.23.2 255.255.255.252
S5750-H-3(config-if-GigabitEthernet 0/3)#exit
S5750-H-3(config)#interface gigabitEthernet 0/4
S5750-H-3(config-if-GigabitEthernet 0/4#no switchport
S5750-H-3(config-if-GigabitEthernet 0/4#ip address 172.16.13.2 255.255.255.252
S5750-H-3(config-if-GigabitEthernet 0/4)#exit
S5750-H-3(config)#interface loopback 0
S5750-H-3(config-if-Loopback 0)#ip address 3.3.3.3 255.255.255.255
S5750-H-3(config-if-Loopback 0)#exit
2) Configure OSPF Routing for the S5750-H-3
S5750-H-3(config)#router ospf 110
S5750-H-3(config-router)#router-id 3.3.3.3
Change router-id and update OSPF process! :y
S5750-H-3(config-router)#network 172.16.13.0 0.0.0.3 area 0
S5750-H-3(config-router)#network 172.16.23.0 0.0.0.3 area 0
S5750-H-3(config-router)#exit
3) Configure Multicast Routing for the S5750-H-3
S5750-H-3(config)#ip multicast-routing
S5750-H-3(config)#interface gigabitEthernet 0/3
S5750-H-3(config-if-GigabitEthernet 0/3)#ip pim dense-mode
S5750-H-3(config-if-GigabitEthernet 0/3)#exit
S5750-H-3(config)#interface gigabitEthernet 0/4
S5750-H-3(config-if-GigabitEthernet 0/4)#ip pim dense-mode
S5750-H-3(config-if-GigabitEthernet 0/4)#end
S5750-H-3#wr
Configurations on the Access Switch
S2928G-E
1) Create a vlan on the access switch and divide the vlan, set the port connecting to the user as access port and the uplink port as trunk port
S29E(config)#vlan 10
S29E(config-vlan)#exit
S29E(config)#interface gigabitEthernet 0/25
S29E(config-if-GigabitEthernet 0/25)#switchport mode trunk
S29E(config-if-GigabitEthernet 0/25)#exit
S29E(config)#interface range fastEthernet 0/1-2
S29E(config-if-range)#switchport access vlan 10
S29E(config-if-range)#exit
2) On the access switch, globally configure IGMP Snooping to IVGL mode and configure port g0/25 as the routing connection port for VLAN 10.
S29E(config)#vlan 10
S29E(config-vlan)#exit
S29E(config)#ip igmp snooping ivgl
S29E(config)#ip igmp snooping vlan 10 mrouter interface g0/25
S29E(config)#end
S29E#wr
Verification
1) View the IGMP Group group on the access switch
S29E#show ip igmp groups
IGMP Connected Group Membership
Group Address Interface Uptime Expires Last Reporter
225.1.1.1 VLAN 20 00:03:4800:03:20192.168.100.1
2) View the PIM-DM information of the interface
S5750-H-2#show ip pim dense-mode interface detail
GigabitEthernet 0/2(vif-id: 1):
Address 172.18.12.2
Hello period 30 seconds, Next Hello in 30 seconds
Over-ride interval 2500 milli-seconds
Propagation-delay 500 milli-seconds
Neighbors:
172.18.12.1
GigabitEthernet 0/4(vif-id: 1):
Address ip address 172.16.23.1
Hello period 30 seconds, Next Hello in 30 seconds
Over-ride interval 2500 milli-seconds
Propagation-delay 500 milli-seconds
Neighbors:
ip address 172.16.23.2
3) View next hop information for PIM-DM
S5750-H-2#show ip pim dense-mode nexthop
Destination Nexthop Nexthop Nexthop Metric Pref
Num Addr Interface
192.168.100.2 1 172.18.12.1GigabitEthernet 0/1 0 1
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