HP 5500 Ei 5500 Si Switch Series Configuration Guide

 25 
Step Command Remarks  
2.  Enter Layer 2 Ethernet 
interface view, Layer 2 
aggregate interface view, or 
port group view.  
• Enter Layer 2 Ethernet interface 
view or Layer 2 aggregate 
interface view: 
interface  interface-type  
interface-number 
•  Enter port group view: 
port-group  manual 
port-group-name   Use either command.
 
3.  Disable the ports from 
becoming dynamic router 
port.   igmp-snooping router-port-deny 
[
 vlan  vlan-list  ]   By default, a port can become a 
dynamic router...

 26 
Step Command Remarks   
3.  Enable IGMP snooping 
querier.   igmp-snooping
 querier
  Disabled by default
 
 
 IMPORTANT: 
In a multicast network that runs IGMP, you do not 
need to configure an IGMP snooping querier because
it may affect IGMP querier elections by sending IGMP  general queries with a low source IP address.  
 
Configuring parameters for IGMP queries and responses 
Configuration guidelines 
You can modify the IGMP general query interval based on actual condition of the network.  
A...

 27 
Step Command Remarks  
4.  Set the maximum response 
delay for IGMP general 
queries.   igmp-snooping max-response-time 
interval
 10 seconds by default
 
5.  Set the IGMP last-member 
query interval.   igmp-snooping 
last-member-query-interval
 interval
  1 second by default
 
 
Configuring the source IP addresses for IGMP queries 
After the switch receives an IGMP query whose source IP address is 0.0.0.0 on a port, it does not enlist 
that port as a dynamic router port. This might prev ent...

 28 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter VLAN view. 
vlan vlan-id   N/A 
3.  Enable IGMP snooping 
proxying in the VLAN.  igmp-snooping proxying enable 
Disabled by default 
 
Configuring a source IP address for the IGMP messages sent by 
the proxy 
You can set the source IP addresses in the IGMP reports and leave messages that the IGMP snooping 
proxy sends on behalf of its attached hosts.  
To configure the source IP addresses for the IGMP messages that the IGMP...

 29 
the switch creates an IGMP snooping forwarding entr y for the multicast group and adds the port to the 
forwarding entry. Otherwise, the switch drops this  report message, in which case, the multicast data for 
the multicast group is not sent to this port, and the user cannot retrieve the program.  
When you configure a multicast group filter in a multicast VLAN, be sure to configure the filter in the 
sub-VLANs of the multicast VLAN. Otherwise, the configuration does not take effect. 
In IGMPv3,...

 30 
Step Command Remarks  
1.  Enter system view. 
system-view  N/A 
2.  Enter IGMP-snooping view.  
igmp-snooping  N/A 
3.  Enable multicast source port 
filtering.   source-deny 
port interface-list  Disabled by default
 
 
Configuring multicast source port filtering on a port 
 
Step Command Remarks  
1.  Enter system view. 
system-view  N/A 
2.  Enter Layer 2 Ethernet 
interface view or port group 
view.  
• Enter Layer 2 Ethernet interface 
view: 
interface  interface-type  
interface-number  
•...

 31 
Configuring IGMP report suppression 
When a Layer 2 switch receives an IGMP report from a multicast group member, the switch forwards the 
message to the Layer 3 device that directly connects to the Layer 2 switch. When multiple members of a 
multicast group are attached to the Layer 2 switch, the Layer 3 device might receive duplicate IGMP 
reports for the multicast group from these members.  
With the IGMP report suppression function enabled, within each query interval, the Layer 2 switch...

 32 
Step Command Remarks  
2.  Enter Layer 2 Ethernet 
interface view, Layer 2 
aggregate interface view, or 
port group view.  
• Enter Layer 2 Ethernet interface 
view or Layer 2 aggregate 
interface view: 
interface  interface-type  
interface-number  
• Enter port group view: 
port-group  manual 
port-group-name   Use either command.
 
3.  Set the maximum number of 
multicast groups that a port 
can join.   igmp-snooping group-limit
 limit  
[ vlan  vlan-list  ]  By default, the upper limit is 2000...

 33 
Step Command Remarks  
2.  Enter Layer 2 Ethernet 
interface view, Layer 2 
aggregate interface view, or 
port group view.  
• Enter Layer 2 Ethernet interface 
view or Layer 2 aggregate 
interface view: 
interface  interface-type  
interface-number  
• Enter port group view: 
port-group  manual 
port-group-name   Use either command.
 
3.  Enable multicast group 
replacement.   igmp-snooping overflow-replace 
[
 vlan  vlan-list ]  Disabled by default.
 
 
Setting the 802.1p precedence for IGMP...

 34 
the host is allowed to join the multicast group. Otherwise, the join report is dropped by the access 
switch.  
•   After receiving an IGMP leave message from a host, the access switch matches the multicast group 
and source addresses with the policies. If a match is found, the host is allowed to leave the group. 
Otherwise, the leave message is dropped by the access switch.  
A multicast user control policy is functionally similar to a multicast group filter. A difference is that a 
control policy...