Huawei CX320 User Manual page 25

CX320 Switch Module
User Guide
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ESN
An Equipment Serial Number (ESN) uniquely identifies a server. An ESN is required when
you apply for technical support from Huawei.
Figure 2-8 ESN example
Callout No.
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Issue 09 (2019-08-02)
Connection status indicator
PIC card handle
Description
ESN ID (two characters), which is 21 by default.
Material identification code (eight characters), that is, processing code.
Vendor code (two characters). The code 10 indicates Huawei, and other
values indicate outsourcing vendors.
Year and month (two characters).
l The first character indicates the year, where:
– Digits 1 to 9 indicate 2001 to 2009, respectively.
– Letters A to H indicate 2010 to 2017, respectively.
– Letters J to N indicate 2018 to 2022, respectively.
– Letters P to Y indicate 2023 to 2032, respectively.
NOTE
The years from 2010 are represented by upper-case letters excluding I, O, and Z
because the three letters are similar to the digits 1, 0, and 2.
l The second character indicates the month, where:
– Digits 1 to 9 indicate January to September, respectively.
– Letters A to C indicate October to December, respectively.
Serial number (six characters).
RoHS compliance (one character). Y indicates environmental protection
processing.
Internal model, that is, product name.
Copyright © Huawei Technologies Co., Ltd.
2 Data transmission status
indicator
4 16G FC port
2 Product Overview
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