HP 5500 Ei 5500 Si Switch Series Configuration Guide

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After the configuration is completed, Host A an d Host B send IGMP join messages for group 
224.1.1.1. Receiving the messages, Switch A send s a join message for the group out of port 
GigabitEthernet 1/0/1 (a router port) to Router A.  
Use the  display igmp-snooping group  command and the display igmp group  command to display 
information about IGMP snooping groups and IGMP multicast groups. For example:  
# Display information about IGMP snooping groups on Switch A. 
[SwitchA] display...

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  Port flags: D-Dynamic port, S-Static port, C-Copy port, P-PIM port 
  Subvlan flags: R-Real VLAN, C-Copy VLAN 
  Vlan(id):100. 
    Total 1 IP Group(s). 
    Total 1 IP Source(s). 
    Total 1 MAC Group(s). 
    Router port(s):total 1 port. 
            GE1/0/1                (D) ( 00:01:23 ) 
    IP group(s):the following ip group(s) match to one mac group. 
      IP group address:224.1.1.1 
        (0.0.0.0, 224.1.1.1): 
          Host port(s):total 1 port. 
            GE1/0/3...

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Configure an IP address and subnet mask for each interface as per  Figure 18. (Details not shown.) 
2. Configure Switch A: 
# Create VLAN 101 through VLAN 104 and assign GigabitEthernet 1/0/1 through 
GigabitEthernet 1/0/4 to the four VLANs respectively.  
 system-view 
[SwitchA] vlan 101 
[SwitchA-vlan101] port gigabitethernet 1/0/1 
[SwitchA-vlan101] quit 
[SwitchA] vlan 102 
[SwitchA-vlan102] port gigabitethernet 1/0/2 
[SwitchA-vlan102] quit 
[SwitchA] vlan 103 
[SwitchA-vlan103] port...

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[SwitchA] user-profile profile1 enable 
# Create RADIUS scheme scheme1 ; set the service type for the RADIUS server to  extended; specify 
the IP addresses of the primary authentication/authorization server and accounting server as 
3.1.1.1; set the shared keys to 123321; specify th at no domain name is carried in a username 
sent to the RADIUS server.  
[SwitchA] radius scheme scheme1 
[SwitchA-radius-scheme1] server-type extended 
[SwitchA-radius-scheme1] primary authentication 3.1.1.1...

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[SwitchB-user-profile-profile2] igmp-snooping access-policy 2001 
[SwitchB-user-profile-profile2] quit 
[SwitchB] user-profile profile2 enable 
# Create a RADIUS scheme  scheme2; set the service type for the RADIUS server to  extended; 
specify the IP addresses of the primary authenticati on/authorization server and accounting server 
as 3.1.1.1; set the shared keys  to 321123; specify that a username sent to the RADIUS server 
carry no domain name. 
[SwitchB] radius scheme scheme2...

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  Port flags: D-Dynamic port, S-Static port, C-Copy port, P-PIM port 
  Subvlan flags: R-Real VLAN, C-Copy VLAN 
  Vlan(id):104. 
    Total 1 IP Group(s). 
    Total 1 IP Source(s). 
    Total 1 MAC Group(s). 
    Router port(s):total 1 port. 
            GE1/0/1                (D) ( 00:01:30 ) 
    IP group(s):the following ip group(s) match to one mac group. 
      IP group address:224.1.1.1 
        (0.0.0.0, 224.1.1.1): 
          Attribute:    Host Port 
          Host port(s):total 1 port....

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Troubleshooting IGMP snooping 
Layer 2 multicast forwarding cannot function 
Symptom 
Layer 2 multicast forwarding cannot function.  
Analysis 
IGMP snooping is not enabled. 
Solution 
1. Use the  display current-configuration  command to check the running  status of IGMP snooping.  
2. If IGMP snooping is not enabled, use the  igmp-snooping command to enable IGMP snooping 
globally, and then use the  igmp-snooping enable command to enable IGMP snooping in VLAN 
view.  
3.  If IGMP snooping is...

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1.
 
If only IGMP is enabled on the switch, or if  both IGMP and PIM are enabled on the switch, the 
switch does the following: 
{  Maintains dynamic member ports or dynamic  router ports according to IGMP packets  
{ Maintains dynamic router ports according to PIM hello packets 
2. If only PIM is enabled on the switch, the following occur: 
{  The switch broadcasts IGMP messages as unknown messages in the VLAN.  
{ After receiving a PIM hello message, the switch maintains the corresponding dynamic...

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Configuring PIM snooping 
Overview 
Protocol Independent Multicast (PIM) snooping runs on Layer 2 devices. It determines which ports are 
interested in multicast data by analyzing the received PIM messages, and adds the ports to a multicast 
forwarding entry to make sure that multicast data can  be forwarded to only the ports that are interested 
in the data.  
Figure 19  Multicast packet transmission without or with PIM snooping 
 
 
As shown in Figure 19, Source 1 sends multicast data to multicast...

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PIM messages in the VLAN, and forwards all multicast data to all router po rts in the VLAN. Each 
PIM-capable router in the VLAN, whether interested  in the multicast data or not, can receive all 
multicast data and all PIM messag es except PIM hello messages. 
•   When the Layer 2 switch runs both IGMP snooping and PIM snooping, it determines whether 
PIM-capable routers are in terested in the multicast data addressed to a multicast group according 
to PIM messages received from the routers, and a...