l Management plane: provides functions such as system monitoring, environment
monitoring, log and alarm processing, system loading, and system upgrade.
l Switching plane: provides high-speed and non-blocking data channels to implement service
switching between service modules.
The SRU consists of the following modules:
l Control module: functions as the control and management plane for the system,
implementing protocol processing, route calculation, forwarding control, system
management, and system security.
l Switching module: functions as the service switching plane and provides high-speed service
channels to implement service switching, including voice switching, data switching, and
conversion between voice and data services.
l Power supply module: conducts power from backplane to card.
l Clock module: provides synchronous clock signals for voice cards and local voice
switching.
NOTE
l The SRU stores configuration data, startup files, upgrade software, and logs.
l The SRU is hot swappable.
Applications
The AR2240,AR3260 must have an SRU installed. The AR2240,AR3260 can operate with one
SRU installed and with two SRUs installed in future.
l When one SRU is installed, it can be inserted into the following slot:
– Slot 11 of the AR2240
– Slot 15 of the AR3260
For slot distribution on the AR2240, see Figure 2-15.
For slot distribution on the AR3260, see Figure 2-18.
5.2.2 Panel and Interfaces
NOTE
The SRU40 and SRU80 panels are identical except for having different silkscreens.
Figure 5-7 shows the appearance of the SRU.
Figure 5-7 Appearance of the SRU
1 2 4
3 56 5 6 9 10
b c d
a e f
117 87 8 7 8
Huawei AR1200&2200&3200 Series Enterprise Routers
Hardware Description 5 Cards
Issue 03 (2012-04-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
57
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