34
4. Verify the configuration:
Switch D and Switch C are on the same subnet, so Switch D can do the following:
{ Receive the multicast messages from Switch C without being enabled with the multicast
functions.
{ Synchronize to Switch C.
# Verify that Switch D has synchronized to Switch C, and the clock stratum level is 3 on Switch
D and 2 on Switch C.
[SwitchD-Vlan-interface2] display ntp-service status
Clock status: synchronized
Clock stratum: 3
System peer: 3.0.1.31
Local mode: bclient
Reference clock ID: 3.0.1.31
Leap indicator: 00
Clock jitter: 0.044281 s
Stability: 0.000 pps
Clock precision: 2^-10
Root delay: 0.00229 ms
Root dispersion: 4.12572 ms
Reference time: d0d289fe.ec43c720 Sat, Jan 8 2011 7:00:14.922
# Verify that an IPv4 NTP association has been established between Switch D and Switch C.
[SwitchD-Vlan-interface2] display ntp-service sessions
source reference stra reach poll now offset delay disper
********************************************************************************
[1245]3.0.1.31 127.127.1.0 2 1 64 519 -0.0 0.0022 4.1257
Notes: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured.
Total sessions: 1
5. Configure Switch B:
Because Switch A and Switch C are on different subnets, you must enable the multicast
functions on Switch B before Switch A can receive multicast messages from Switch C.
# Enable IP multicast routing and IGMP.
<SwitchB> system-view
[SwitchB] multicast routing
[SwitchB-mrib] quit
[SwitchB] interface vlan-interface 2
[SwitchB-Vlan-interface2] pim dm
[SwitchB-Vlan-interface2] quit
[SwitchB] vlan 3
[SwitchB-vlan3] port ten-gigabitethernet 1/0/1
[SwitchB-vlan3] quit
[SwitchB] interface vlan-interface 3
[SwitchB-Vlan-interface3] igmp enable
[SwitchB-Vlan-interface3] igmp static-group 224.0.1.1
[SwitchB-Vlan-interface3] quit
[SwitchB] igmp-snooping
[SwitchB-igmp-snooping] quit
[SwitchB] interface ten-gigabitethernet 1/0/1
[SwitchB- Ten-GigabitEthernet1/0/1] igmp-snooping static-group 224.0.1.1 vlan 3
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