Mypower
S4100
Troubleshooting
Maipu Confidential & Proprietary Information
Page
35
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124
The network is blocked.
Use the show port 0/x statistic command to view that many
packets are received (0/x indicates the port to be viewed). Use
the capture software to capture packets to view whether there
are lots of other packets on the network. If yes, it indicates
that the network is busy, you need to solve the network block
problem first.
The number of the adding
groups exceeds the
threshold and ip igmp
max-groups action
replace is executed.
The threshold of the adding groups is configured on the
receiving port; it is set to adopt the replace action when
receiving the groups that exceeds the threshold. Use the show
run command to view, as follows:
port 0/22
ip igmp max-groups 5
ip igmp max-groups action replace
exit
When excessive groups need to add, the learned groups are
replaced by the new and the receiving becomes un-stable.
Fault 6: The multicast data flow cannot be received after configuring MVP.
Possible Reasons
Judging Methods and Solutions
MVP does not take effect.
Use the show multicast-vlan command to display the
enabling status of the multicast VLAN and the setting of the
multicast VLAN and its sub VLAN, as follows:
switch# show multicast-vlan
Multicast Vlan Table
---------------------------------
VLAN ID: 100
status: enable
subvlan count: 3
subvlan: 10,20,40
VLAN ID: 102
status: disable
subvlan count: 2
subvlan: 12,22
VLAN ID: 103
status: enable
subvlan count: 0
subvlan:
To make MVP take effect, you need to enable the multicast
VLAN and set the association of the multicast VLAN and its sub
VLAN. The above VLAN 100 is enabled with multicast VLAN and
the association of the multicast VLAN and its sub VLAN is set,
so MVP can work normally. VLAN102 is set with the association
of multicast VLAN and its sub VLAN, but multicast VLAN is not
enabled, so MVP cannot work normally. VLAN 103 is enabled
with multicast VLAN, but the association of the multicast VLAN
and its sub VLAN is not set, so the multicast flow cannot be
copied to the sub VLAN.
IGMP Snooping is not
enabled.
To receive the multicast flow in the multicast sub VLAN
normally, you need to enable IGMP Snooping globally and in
multicast VLAN and multicast sub VLAN.
Use the show run igmp snooping command on the switch to
view the configuration, whether IGMP Snooping is enabled
globally and in multicast VLAN and multicast sub VLAN.
