Setting The 802.1P Precedence For Igmp Messages - HP MSR2003 Configuration Manual

To avoid this problem, when a Layer 2 device acts as the IGMP snooping querier, you can configure a
non-all-zero IP address as the source IP address of IGMP queries. You can also change the source IP
address of IGMP messages sent by a simulated member host or an IGMP snooping proxy.
Changing the source address of IGMP queries might affect the IGMP querier election within the subnet.
To configure source IP addresses for IGMP messages:
Step
1. Enter system view.
2. Enter VLAN view.
3. Configure the source IP
address for IGMP general
queries.
4. Configure the source IP
address
group-specific queries.
5. Configure the source IP
address for IGMP reports.
6. Configure the source IP
address for IGMP leave
messages.

Setting the 802.1p precedence for IGMP messages

When congestion occurs on outgoing ports of the Layer 2 device, it forwards IGMP messages in their
802.1p priority order, from highest to lowest. You can assign higher forwarding priority to IGMP
messages by changing their 802.1p precedence.
You can configure the 802.1p precedence of IGMP messages for the current VLAN in VLAN view or
globally for all VLANs in IGMP-snooping view. If the configurations are made in both VLAN view and
IGMP-snooping view, the configuration made in VLAN view takes priority.
Setting the 802.1p precedence for IGMP messages globally
Step
1. Enter system view.
2. Enter IGMP-snooping view.
3. Set the 802.1p precedence for
IGMP messages.
Command
system-view
vlan vlan-id
igmp-snooping general-query
source-ip ip-address
igmp-snooping special-query
for IGMP
source-ip ip-address
igmp-snooping report source-ip
ip-address
igmp-snooping leave source-ip
ip-address
Command
system-view
igmp-snooping
dot1p-priority priority-number
Remarks
N/A
N/A
The default setting is the IP address of the
current VLAN interface. If there is no IP
address for the current VLAN interface, the
source IP address is 0.0.0.0.
By default, if the IGMP snooping querier
has received IGMP queries, the source IP
address of IGMP group-specific queries is
the source IP address of IGMP queries.
Otherwise, it is the IP address of the current
VLAN interface. If there is no IP address for
the VLAN interface, the source IP address
is 0.0.0.0.
The default setting is the IP address of the
current VLAN interface. If there is no IP
address for the current VLAN interface, the
source IP address is 0.0.0.0.
The default setting is the IP address of the
current VLAN interface. If there is no IP
address for the current VLAN interface, the
source IP address is 0.0.0.0.
25
Remarks
N/A
N/A
The default setting is 0.
The global configuration takes
effect on all VLANs.