HP 5500 Ei 5500 Si Switch Series Configuration Guide

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# Create VLAN 100, assign GigabitEthernet 1/0/1 through GigabitEthernet 1/0/4 to this VLAN, 
and enable MLD snooping and IPv6 PIM snooping in the VLAN.  
[SwitchA] vlan 100 
[SwitchA-vlan100] port gigabitethernet 1/0/1 to gigabitethernet 1/0/4 
[SwitchA-vlan100] mld-snooping enable 
[SwitchA-vlan100] pim-snooping ipv6 enable 
[SwitchA-vlan100] quit 
7. Verify the configuration: 
# On Switch A, display the IPv6 PIM snoo ping neighbor information of VLAN 100. 
[SwitchA] display pim-snooping ipv6...

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Troubleshooting IPv6 PIM snooping 
IPv6 PIM snooping does not work 
Symptom 
IPv6 PIM snooping does not work.  
Analysis 
MLD snooping or IPv6 PIM snooping is not enabled on the switch.  
Solution 
1. Use the  display current-configuration  c o m m a n d  t o  c h e c k  t h e  s t a t u s  o f  M L D  s n o o p i n g  a n d  I P v 6  P I M  
snooping. 
2.  If MLD snooping is not enabled, enter system view and use the  mld-snooping command to enable 
MLD snooping globally. Then, enter VLAN view and...

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Configuring IPv6 multicast VLANs 
Overview 
As shown in Figure 75, in the traditional IPv6 multicast programs-on-demand mode, when hosts (Host A, 
Host B, and Host C), which belong to different VLANs, require IPv6 multicast programs on demand 
service, the Layer 3 device, Router A, must forward a separate copy of the multicast traffic in each user 
VL A N to  the  Layer  2  devic e, Swi tch A . This  resu l ts  i n  not only waste of network bandwidth but also extra 
burden on the Layer 3 device....

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Figure 76 Sub-VLAN-based IPv6 multicast VLAN 
 
 
After the configuration, MLD snooping manages router ports in the IPv6 multicast VLAN and member 
ports in the sub-VLANs. When forwarding multicast dat a to Switch A, Router A sends only one copy of 
multicast data to Switch A in the IPv6 multicast VLAN, and Switch A distributes  the data to the sub-VLANs 
that contain receivers.  
Port-based IPv6 multicast VLAN 
As shown in  Figure 77, Ho st A, Host B, and Host C are in different user VLANs. All...

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For more information about VLAN tags, see Layer 2—LAN Switching Configuration Guide.  
IPv6 multicast VLAN configuration task list 
 
Configuration task  Remarks 
Configuring a sub-VLAN-based IPv6 multicast VLAN 
Required 
Use either approach. 
Configuring a port-based IPv6 
multicast VLAN Configuring user port attributes 
Configuring IPv6 multicast VLAN ports  
 
 
NOTE: 
If you have configured both sub-VLAN-based IPv6  multicast VLAN and port-based IPv6 multicast VLAN
 
on a device, the...

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Step Command Remarks 
3.  Configure the specified 
VLANs as sub-VLANs of the 
IPv6 multicast VLAN.  subvlan 
vlan-list  By default, an IPv6 multicast VLAN 
has no sub-VLANs.  
 
Configuring a port-based IPv6 multicast VLAN 
When you configure a port-based IPv6 multicast VLAN, you need to configure the attributes of each user 
port and then assign the ports to the IPv6 multicast VLAN.  
A user port can be configured as a multicast VLAN port 
o n l y  i f  i t  i s  a n  E t h e r n e t  p o r t  o r...

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Step Command  Remarks 
5.  Configure the current user 
ports to permit packets of the 
specified IPv6 multicast VLAN 
to pass and untag the packets.  port hybrid vlan 
vlan-id-list 
{  tagged  | untagged  }  By default, a hybrid port permits 
only packets of VLAN 1 to pass.  
 
For more information about the 
port link-type, port hybrid pvid vlan , and port hybrid vlan  commands, 
see  Layer 2—LAN Switching Command Reference.   
Configuring IPv6 multicast VLAN ports 
Configuration guidelines 
In...

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Step Command Remarks 
5.  Configure the ports as 
member ports of the IPv6 
multicast VLAN.  port multicast-vlan ipv6
 vlan-id   By default, a user port does 
not belong to any IPv6 
multicast VLAN.  
 
Displaying and maintaining IPv6 multicast VLAN 
 
Task Command Remarks 
Display information about an IPv6 
multicast VLAN.  display multicast-vlan ipv6
 
[ vlan-id  ] [ | {  begin |  exclude | 
include  } regular-expression ]   Available in any view 
 
IPv6 multicast VLAN configuration examples...

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Figure 78 Network diagram 
 
 
Configuration procedure 
1. Enable IPv6 forwarding and configure IPv6 addresses: 
Enable IPv6 forwarding on each device and co nfigure an IPv6 address and address prefix for 
each interface as per  Figure 78. (Details 
 not shown.)  
2. Configure Router A: 
# Enable IPv6 multicast routing, enable IPv6 PIM-DM on each interface and enable MLD on the 
host-side interface GigabitEthernet 1/0/2.  
 system-view 
[RouterA] multicast ipv6 routing-enable 
[RouterA] interface...

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[SwitchA-GigabitEthernet1/0/2] port link-type trunk 
[SwitchA-GigabitEthernet1/0/2] port trunk permit vlan 2 3 
[SwitchA-GigabitEthernet1/0/2] quit 
# Configure GigabitEthernet 1/0/3 as a trunk port that permits packets from VLAN 4 and VLAN 
5 to pass through. 
[SwitchA] interface gigabitethernet 1/0/3 
[SwitchA-GigabitEthernet1/0/3] port link-type trunk 
[SwitchA-GigabitEthernet1/0/3] port trunk permit vlan 4 5 
[SwitchA-GigabitEthernet1/0/3] quit 
# Create VLAN 10, assign GigabitEthernet 1/0/ 1...