Mypower
S4100
Troubleshooting
Maipu Confidential & Proprietary Information
Page
55
of
124
Possible Reasons
Judging Methods and Solutions
Line fault
1
．
Execute the show eips ring command on the main node
and FSM
：
FAULT is displayed. SEND: Hello packet is
increasing continuously, while RECEIVE: Hello packet
does not change.
2
．
Execute the show eips port command on the main node
to verify whether PRIMARY and SECONDARY status is up.
If the status is DOWN, it indicates that the port status of
the main node is abnormal. And then execute the show
port command to check the corresponding port.
3
．
If the got information in step 2 is normal, it indicates that
there may be something wrong with the ports of other
nodes and as a result, EIPS HELLO packets cannot be
transmitted to the sub ports of the main node. Here, you
need to verify whether the ports of the transmission node
become abnormal. Execute the show eips ring
command on the transmission node and if FSM
：
LINK-
DOWN is displayed, it indicates that there is something
abnormal.
Fault 2: The broadcast storm appears.
Possible Reasons
Judging Methods and Solutions
1
．
EIPS is not enabled
correctly.
View whether there is the configuration of EIPS start in EIPS.
Meanwhile, execute the show eips ring command to view
whether the EIPS status is init. If there is no eips start
configuration, the ring does not begin to permit EIPS and the
broadcast storm appears.
2
．
The wrong configuration
damages the EIPS
configuration. The
control VLAN
information or interface
is deleted.
Execute the show eips ring command on the main node to
display the FSM
：
Init state, which is state when the EIPS
configuration is not complete. Usually it is because of the
wrong operation of the main node. The control VLAN is
deleted, or the control VLAN information configured on the
EIPS port is deleted, or the port is deleted. The EIPS
configuration is damaged and as a result, the EIPS loop
checking function becomes invalid and the loop appears.
The transmission node deletes the control VLAN or the control
VLAN information configured on the EIPS port is deleted, and
as a result, EIPS Hello packets cannot be transmitted to the
sub ports of the EIPS main node. EIPSA wrongly judges the
ring fault and changes the port from the Block state to the
Forward state, which results in the loop.
Fault 3: The EIPS control packets of the transmission node cannot be
received.
