Viewing the current IGMP configuration
Syntax:
show ip igmp config
Displays IGMP configuration for all VLANs on the switch.
Syntax:
show ip igmp vlan <vid> config
Displays IGMP configuration for a specific VLAN on the switch, including per-port data.
For IGMP operating status, see the section "Internet Group Management Protocol (IGMP) status" in the chapter "Monitoring and Analyzing Switch Operation" of the Management and Configuration Guide for your switch.
Example:
Suppose that you have the following VLAN and IGMP configurations on the switch:
VLAN ID |
VLAN name |
IGMP enabled |
Querier |
---|---|---|---|
1 |
DEFAULT_VLAN |
Yes |
No |
22 |
VLAN-2 |
Yes |
Yes |
33 |
VLAN-3 |
No |
Yes |
You could use the CLI to display this data as follows:
Listing of IGMP configuration for all VLANs in the switch
switch(vlan-33)# show ip igmp config IGMP Service Config Control unknown multicast [Yes] : Yes Forced fast leave timeout [0] : 4 Delayed flush timeout [0] : 0 Look-up Mode [mac] : mac VLAN ID VLAN Name IGMP Enabled Querier Allowed IGMP Version Querier Interval ------- ------------ ------------ --------------- ------------ ---------------- 1 DEFAULT_VLAN Yes No 2 125 22 VLAN22 Yes Yes 2 125 33 VLAN33 No Yes 2 125 switch(vlan-33)# show run Running configuration: ; JL253A Configuration Editor; Created on release #WC.16.02.0000x ; Ver #0d:13.ef.7c.5f.fc.6b.fb.9f.fc.f3.ff.37.ef:09 hostname "switch-name" module 1 type jl253a snmp-server community "public" unrestricted vlan 1 name "DEFAULT_VLAN" untagged 1-28 ip address dhcp-bootp ip igmp no ip igmp querier exit vlan 22 name "VLAN22" no ip address ip igmp exit vlan 33 name "VLAN33" no ip address exit
The following version of the
show ip igmp
command includes the VLAN ID (vid) designation, and combines the above data with the IGMP per-port configuration:
Listing of IGMP configuration for a specific VLAN
switch(vlan-22)# show ip igmp vlan 22 config IGMP Service VLAN Config VLAN ID : 22 VLAN NAME : VLAN22 IGMP Enabled [No] : Yes Querier Allowed [Yes] : Yes IGMP Version [2] : 2 Strict Mode : No Last Member Query Interval (Seconds) [1] : 1 Querier Interval [125] : 125 Query Max. Response Time (Seconds) [10] : 10 Robustness Count [2] : 2 Port Type | Port Mode Forced Fast Leave Fast Leave ------- ---------- + --------- ----------------- ---------- 1 1000T | Auto No Yes 2 1000T | Auto No Yes 3 1000T | Blocked No Yes 4 1000T | Forward No Yes
1 IGMP configuration for the selected VLAN.
2 IGMP configuration on the individual ports in the VLAN.