使用console线无法配置交换机

console线正常，可以在通过console线进行配置其他交换机。

配置此交换机时，插电重启交换机，按Ctrl+D和Ctrl+B无反应，启动信息如下：

Starting......

Press Ctrl+D to access BASIC BOOT MENU

Booting Normal Extend BootWare....

********************************************************************************

* * * H3C S5130S-28P-EI Switch BOOTROM, Version 121 * * *

********************************************************************************

Copyright (c) 2004-2018 New H3C Technologies Co., Ltd.

Creation Date : May 4 2018, 16:17:55

CPU Clock Speed : 800MHz

Memory Size : 512MB

Flash Size : 256MB

CPLD Version : 001

PCB Version : Ver.B

Mac Address : 04d7a524adf0

Press Ctrl+B to access EXTENDED BOOT MENU...0

Loading the main image files...

Loading file flash:/s5130s_ei-cmw710-system-r6126p20.bin........................ ....................Done.

Loading file flash:/s5130s_ei-cmw710-boot-r6126p20.bin.........Done.

Image file flash:/s5130s_ei-cmw710-boot-r6126p20.bin is self-decompressing...... ................................................................................ ................................................................................ ................................................................................ ................................................................................ .....................................................................Done.

System is starting...

Board checking.......................LSP9LTSUA

SDRAM fast selftest........................OK!

Flash fast selftest........................OK!

CPLD selftest..............................OK!

Switch chip selftest.......................OK!

PHY selftest...............................OK!

Please check leds....................FINISHED!

Cryptographic algorithms tests passed.

Line aux0 is available.

Press ENTER to get started.

通过CRT软件进入时，流控设置已经全部取消

请问有没有解决的方式？