Contentsii3.4 Network Interface Communication Failure 273.4.1 Ethernet Port Cannot Be Connected 273.4.2 Communication Failure in Basic Switching Unit BSU/PSP 293.4.3 Actions against Troubles on 10BASE-T/100BASE-TX/1000BASE-T 303.4.4 Actions against Troubles on 1000BASE-X 323.4.5 Actions against Troubles on 10GBASE-R 333.4.6 Communication Failure on Using PoE 353.4.7 Communication Failure on Using Link Aggregation 363.5 Layer 2 Network Communication Failure 383.5.1 Layer 2 Communication by VLAN Is Disabled 383.5.2 Failures on Using Spanning Tree 403.5.3 Failures on Using Ring Protocol 413.5.4 Multicast Relay by IGMP snooping Is Disabled 443.5.5 Multicast Relay by MLD snooping Is Disabled 473.6 IPv4 Network Communication Failure 503.6.1 Communication Is Disabled or Is Disconnected 503.6.2 IP Addresses Cannot Be Assigned Using DHCP Function 543.6.3 DynamicDNS Cooperation in DHCP Function Is Disabled 583.7 IPv4 Unicast Routing Communication Failure 613.7.1 No RIP Routing Information Exists 613.7.2 No OSPF Routing Information Exists 613.7.3 No BGP4 Routing Information Exists 623.7.4 No Routing Information Exist [OP-NPAR] 623.8 IPv4 Multicast Routing Communication Failure 633.8.1 Communication on IPv4 PIM-SM Network Is Disabled 633.8.2 Multicast Data Is Double-relayed on IPv4 PIM-SM Network 663.8.3 Communication on IPv4 PIM-SSM Network Is Disabled 673.8.4 Multicast Data Is Double-relayed on IPv4 PIM-SSM Network 693.8.5 IPv4 Multicast Communication Failure In VRF [OP-NPAR] 703.9 IPv6 Network Communication Failure 713.9.1 Communication Is Disabled or Is Disconnected 713.9.2 IPv6 DHCP Troubleshooting 733.10 IPv6 Unicast Routing Communication Failure 793.10.1 No RIPng Routing Information Exists 793.10.2 No OSPFv3 Routing Information Exists 793.10.3 No BGP4+ Routing Information Exists 803.11 IPv6 Multicast Routing Communication Failure 813.11.1 Communication on IPv6 PIM-SM Network Is Disabled 813.11.2 Multicast Data Is Double-relayed on IPv6 PIM-SM Network 843.11.3 Communication on IPv6 PIM-SSM Network Is Disabled 853.11.4 Multicast Data Is Double-relayed on IPv6 PIM-SSM Network 873.12 Layer 2 Authentication Communication Failure 893.12.1 Communication Failure on Using IEEE 802.1X 893.12.2 Communication Failure on Using Web Authentication 923.12.3 Communication Failure on Using MAC Authentication 973.12.4 Communication Failure on Using Authentication VLAN [OP-VAA] 99
