NEC IP8800/S2400 Series, Troubleshooting Manual

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Contents
iii
3.13 Communication Failure on High-reliability Function 103
3.13.1 GSRP Communication Failures 103
3.13.2 Communication with VRRP Configuration in IPv4 Network Is Disabled 105
3.13.3 Communication with VRRP Configuration in IPv6 Network Is Disabled 107
3.14 SNMP Communication Failure 110
3.14.1 MIBs Cannot Be Obtained from SNMP Manager 110
3.14.2 Traps Cannot Be Received by SNMP Manager 110
3.15 Troubleshooting of sFlow Statistics (Flow Statistics) Function 112
3.15.1 sFlow Packets Do Not Reach Collector 112
3.15.2 Flow Sample Does Not Reach Collector 115
3.15.3 Counter Sample Does Not Reach Collector 115
3.16 Communication Failures on Neighboring System Managing Function 116
3.16.1 Unable to Obtain Neighboring System Information via LLDP Function 116
3.16.2 Unable to Obtain Neighboring System Information via OADP Function 116
3.17 NTP Communication Failure 118
3.17.1 Time Synchronization by NTP Is Disabled 118
3.18 Communication Failure on IEEE802.3ah/UDLD Function 119
3.18.1 Port Becomes Inactive Due to IEEE802.3ah/UDLD Function 119
3.19 Problems on Redundant Configuration of Basic Control Unit (BCU)/Control and Switching Unit (CSU)/
Management and Switching Unit (MSU) [IP8800/S6700] [IP8800/S6600] [IP8800/S6300] 120
3.19.1 Active System Switchover Is Disabled 120
3.20 Problems on Redundant Configuration of Basic Switching Unit (BSU) [IP8800/S6700] 121
3.20.1 Active BSU Switchover Is Disabled 121
3.21 Problems on Power Saving Feature 123
3.21.1 Schedule Is Disabled [IP8800/S6700] [IP8800/S6600] 123
3.22 Congestion Caused by Packets Processed Through CPU Is Not Recovered 124
3.23 Communication Failure Caused by Settings of Filtering/QoS 126
3.23.1 Checking Filtering/QoS Setting Information 126
4
Troubleshooting Communication Failures Due to Resource Shortage [IP8800/S6700]
[IP8800/S6600] [IP8800/S6300] 129
4.1 MAC Address Table Resource Shortage 130
4.1.1 Checking Resource Usage of MAC Address Table 130
4.1.2 Action to Be Taken When MAC Address Table Resource Shortage Occurs 130
4.2 When Resource Shortage of VLAN Identification Table Occurs 133
4.2.1 Checking VLAN Identification Table Resource Usage 133
4.2.2 Action to Be Taken When VLAN Identification Table Resource Shortage Occurs 133
4.3 When Resource Shortage Occurs in Shared Memory 135
4.3.1 Checking Resource Usage of Shared Memory 135
4.3.2 Action to Be Taken When Resource Shortage of Shared Memory Occurs 135
5
Collecting Failure Information 137
5.1 Collecting Failure Information 138
5.1.1 Collecting Failure Information Using ftp Command from the Operation Terminal 138