Интересно себя ведет...

Вводим

DES-1210-28/ME:5# create vlan vlan4072 tag 4072
Command: create vlan vlan4072 tag 4072
Success.

DES-1210-28/ME:5# config ipif System vlan vlan4072 ipaddress 10.228.196.28/24 state enable
Command: config ipif System vlan vlan4072 ipaddress 10.228.196.28/24 state enable

#
# ls
bin lib mnt sbin var
dev linuxrc proc tmp
etc lost+found root usr
#

и reboot... ls уже я вводил....

Если вводить следующим образом все ОК
DES-1210-28/ME:5# config ipif System vlan vlan4072 ipaddress 10.228.196.28/24
Command: config ipif System vlan vlan4072 ipaddress 10.228.196.28/24
Success.
DES-1210-28/ME:5# config ipif System state enable
Command: config ipif System state enable
Success.

До манипуляций

DES-1210-28/ME:5# show switch
Command: show switch

Device Type : DES-1210-28/ME
MAC Address : E8-CC-18-75-67-B2
IP Address : 10.90.90.90 (Manual)
VLAN Name : default
Subnet Mask : 255.0.0.0
Default Gateway : 0.0.0.0
System Boot Version : 1.00.008
System Protocol Version : 2.001.004
System Firmware Version : 6.10.B036
System Hardware Version : B2
System Serial Number : QBM51EB005030
System Name :
System Location :
System up time : 0 days, 0 hrs, 1 min, 46 secs
System Contact :
System Time : 01/01/2012 00:00:44
STP : Disabled
GVRP : Disabled
IGMP Snooping : Disabled
VLAN Trunk : Disabled
802.1X Status : Disabled
Telnet : Enabled (TCP 23)
Web : Enabled (TCP 80)
RMON : Disabled
SSH : Disabled
Syslog Global State : Disabled
SSL : Disabled
CLI Paging : Enabled
Password Encryption State : Disabled

Я отписал разработчикам о проблеме и дам знать, как будут новости.

Исправлено в B041