Hitachi GR2000 Series - Manual (Page 240)

Hitachi Gigabit Router GR2000 Series Enhanced Version Operations - Device Management Overview
7-74 GR2K-GA-0015
Ver. 07-02
Figure 7-20 Communication Failures Troubleshooting Chart
7.8.4.1 Inspection of Log Message and Interface
Impediment (or breakage) of the hardware (RP/NIF/Line) or impediment in the
adjacent device may be seen as the cause of the communication obstruction. Inspect
the log messages shown in the router and the interface up/down status by the show
ip interface command. For the procedure, see Subsection 7.5.1(IPv4 network) or
Subsection 7.8.1 (IPv6 network).