Hello, everyone!
Today, I will show you basic multicast commands. These commands are very important for multicast maintenance and troubleshooting.
1. Commands for display multicast users:
TEST(config-btv)#display igmp user all
With this command, we can check the status of all IGMP users. Next command display member of the multicast VLAN:
TEST(config-mvlanXXX)#display igmp multicast-vlan member vlan XXX.
This command shows us any information of a multicast user in an MVLAN.
2. Command for block and unblock user:
TEST(config-btv)#igmp user block port 0/X/Y
TEST(config-btv)#undo igmp user block port 0/X/Y
3. Command for checking the program library:
TEST(config-mvlanXXX)#display igmp program all
4. Command for modifying the number of programs:
TEST(config-btv)#igmp user modify service-port X max-program Y
This is a very useful command. With this command, we can modify the number of multicast programs that customers can watch at the same time. Users can watch a maximum of 32 programs at the same time.
5. Command for modifying the bandwidth of a program:
TEST(config-mvlanXXX)#igmp program modify name program X bandwidth YY
6. Command for rename the program:
TEST(config-mvlanXXX)#igmp program rename programX ZZZ
When we want to change the name of the program, we use this command. Program programX is the old name and ZZZ is the new name of the program.
7. Commands for display configurations of multicast VLAN and global IGMP:
TEST(config-mvlanXXX)#display igmp config vlan XX
TEST(config-btv)#display igmp config global
Command for display configuration of the multicast VLAN show many useful parameters such as the IGMP mode, upstream port, program matching mode, and version.
8. Commands for statistics of IGMP packet and the multicast traffic:
TEST(config)#display igmp statistic vlan XX
This command shows us whether the service is normal. The main information is the number of sent request packets.
TEST(config-mvlanXXX)#display multicast flow-statistic vlan XX ip X.X.X.X
This is a very useful command because we can measure multicast traffic. This information is the real-time traffic statistics. We can choose to check the traffic for the multicast program (ip X.X.X.X) or the traffic for the upstream port (uplink-port).
9. Command for display user's logs:
TEST(config-btv)#display igmp log all
With this command, we can check the IGMP multicast log records of users. We can see information such as online and offline records.
Thank you!
