Transceiver module overview······························································································································· 28 Fiber cable overview············································································································································· 29 Connecting a fiber cable······································································································································ 30 Connecting an E1/T1 cable ········································································································································· 31 Overview································································································································································ 31 Connecting an E1/T1 cable ································································································································ 32 Connecting a CE3/CT3 cable ····································································································································· 34 Overview································································································································································ 34 Connecting a CE3/CT3 cable····························································································································· 34 Connecting a serial port cable ····································································································································· 35 Overview································································································································································ 35 Connecting a serial port cable ···························································································································· 37

Accessing the router···················································································································································39

Login methods································································································································································· 39 Logging in through the console port ···························································································································· 39 Setting up a configuration environment ·············································································································· 39 Setting terminal parameters·································································································································· 40 Powering on the router ·················································································································································· 43 Verifying before power-on···································································································································· 43 Powering on the router ········································································································································· 43 Displaying boot information································································································································· 43 Logging in to the router through Telnet/SSH ·············································································································· 44 Logging in to the router through the AUX port············································································································ 44 Configuring basic settings············································································································································· 45

Replacement procedures ···········································································································································46

Safety recommendations ··············································································································································· 46 Replacing a power module··········································································································································· 46 Replacing an MPU and a switching fabric module···································································································· 47 Prerequisites ··························································································································································· 47 Replacing an RSE-X2 MPU ··································································································································· 47 Replacing an SFE-X1············································································································································· 47 Replacing an LPU ··························································································································································· 48 Replacing a HIM/MIM·················································································································································· 49 Replacing a CF card······················································································································································ 50 Replacing a transceiver module ··································································································································· 50 Replacing a fan tray ······················································································································································ 51 Replacing a fan tray for an HSR6802/HSR6804 router·················································································· 51 Replacing a fan tray for an HSR6808 router····································································································· 51 Replacing an air filter ···················································································································································· 52 Replacing an air filter for an HSR6802/HSR6804 router ··············································································· 52 Replacing an air filter for an HSR6808 router··································································································· 53 Replacing a memory module ········································································································································ 53 Memory module structure ····································································································································· 54 Replacing a memory module ······························································································································· 54

Hardware management and maintenance ··············································································································56

Displaying the hardware information of the router ···································································································· 56 Displaying the version information of the router ································································································ 56 Displaying the running statistics for the router ··································································································· 57 Displaying detailed information about a card ··································································································· 57 Displaying the electrical label data····················································································································· 58 Displaying the CPU usage statistics····················································································································· 59 Displaying the MPU memory usage ···················································································································· 59 Displaying the CF card information ···················································································································· 60

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