12
C
HAPTER
1: O
VERVIEW
H3C MSR 20-21 Router
Appearance
1
Front view
Figure 3
Front view of H3C MSR 20-21
2
Rear view
Figure 4
Rear view of H3C MSR 20-21
ESM ESM
module
LED:
Green and slow blinking means the system is booting.
Green means ESM card is operation normally.
Yellow means ESM card is malfunctioning.
Steady OFF means no ESM card is present.
Table 6
Rear panel LEDs of H3C MSR 20-20 Router
LED Description
LINK
OFF means no link is present.
ON means a link is present.
ACT
OFF means no data is being transmitted or received.
Blinking means data is being transmitted or received.
CF
Steady green means a CF card is present.
Green and blinking means the CF card is reading/writing data. To
prevent data corruption, do not remove the running CF card.
Steady yellow means the present CF card is malfunctioning.
Steady OFF means no CF card is present or the present CF card
cannot be identified by the system.
Table 5
Front panel LEDs description of MSR 20-20 router
LED Description
(1) Power LED (PWR)
(2) System LED (SYS)
(3) ESM LED (ESM)
(3)
(2)
(1)
(12)
(11)
(10)
(9)
(8)
(6)
(5)
(3)
(4)
(7)
(1)
(2)
(13)
