Displaying the fan operating status····················································································································· 60 Displaying the power module operating status·································································································· 61 Displaying the alarming thresholds of a card············································································································· 61 Port configuration and management···························································································································· 62 Configuring a combo interface···························································································································· 62 Displaying and verifying transceiver modules ··································································································· 63 Active and standby switchover for MPUs ···················································································································· 64 Troubleshooting system exceptions ······························································································································ 64 Configuring the exception handling methods ···································································································· 64 Displaying the exception handling method ········································································································ 65 Rebooting a card or router ··········································································································································· 65

Troubleshooting··························································································································································67

MPU failures ··································································································································································· 67 RUN LED is off ······················································································································································· 67 RUN LED fast flashes············································································································································· 67 ALM LED is steady on or flashes·························································································································· 67 PALM LED is steady on ········································································································································· 68

LPU failures ····································································································································································· 68 RUN LED is off ······················································································································································· 68 RUN LED fast flashes············································································································································· 69 Power module failures ··················································································································································· 69 Power LED is off····················································································································································· 69 Red power LED is on············································································································································· 70

Fan failures ····································································································································································· 70 Fan tray is absent ·················································································································································· 70 ALM LED is red ······················································································································································ 70 HIM/MIM failures ·························································································································································· 71 Configuration system problems ···································································································································· 71 No terminal display ·············································································································································· 71 Garbled terminal display······································································································································ 71 No response from the serial port························································································································· 72

Dealing with password loss ·········································································································································· 72 Examining the state of password recovery capability······················································································· 73 Dealing with console login password loss when password recovery capability is enabled ························ 74 Dealing with user privilege level password loss when password recovery capability is enabled··············· 75 Dealing with password loss when password recovery capability is disabled ··············································· 76

Cooling system failure ··················································································································································· 77 Ethernet port failure························································································································································ 77 HIM/MIM, cable, and connection failure··················································································································· 78 Software upgrade failures············································································································································· 78 No response from the serial port of the MPU····································································································· 78 TFTP upgrade failure ············································································································································· 78 FTP upgrade failure ··············································································································································· 79

System software image file missing errors ·················································································································· 79

Appendix A Chassis views and technical specifications ························································································80

Chassis views ································································································································································· 80 HSR6802 ······························································································································································· 80 HSR6804 ······························································································································································· 81 HSR6808 ······························································································································································· 83 Dimensions and weight ················································································································································· 84 Power consumption························································································································································ 85 Power module································································································································································· 86 AC power module················································································································································· 86

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