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User Manual
21
¾
CRC loss of multi-frame alignment alarm
There is no alarm f and g on device panel and you can get these alarm information through network
management or Hyper Terminal.
There are system alarms when RC3000 cannot work normally, including:
¾
Status of data storage (there are four kinds of data saved in memory): the main board, E1
module, 2M module and device version.
¾
Communication status of sub-card: whether the main board communicate with the three
sub-cards successfully
¾
Communication status of line-board
¾
Work status of temperature converter
¾
Work status of fan
¾
Channel configuration information of each sub-card confliction
5.1.8 Network management channel
RC3000 has both assistant network management channel and network management concatenation
function. Through assistant network management channel local PC can manage remote devices, local
and remote network management channel connection can be realized through LINK UP and LINK
DOWN interfaces on RC3000, so one network management PC can manage all RC3000s in different
networks. The following is exact explanations:
a.
Assistant network management channel:
Through assistant network management channel all RC3000s in one network can be managed as in
Figure 5-1:
In this topology the lines between each RC3000 are assistant network management channels, and for
normal network management there must be network management topology configuration as follows:
RC3000 A: dual-E1 channel direction RC3000 B: single E1 channel direction
RC3000 C: single E1 channel direction RC3000 D: four E1 channel direction
RC3000 E: single E1 channel direction RC3000 F: single E1 channel direction
Rules for network management topology: The number of network management channels decides the
number of E1 direction, and configuration of E1 direction must start from 1 E1.
b.
Network management concatenation:
Figure 5-1
A
1E1
1E1 1
2E1
2E
1
1E1
2
3E1 1
E 1
4E1
B
E
D
C
F
1E1 1
1
2E1
3E1 3
4E1 4
1E1 1
1E1
2E1 2