Здравствуйте.
Подскажите чем могут быть вызваны множество ошибок в логе Zyxel IES 3000:

4229 Apr 22 19:33:04 network   INFO  IP group effffffa can't be created on chann_p 813a7e44
4231 Apr 22 19:33:04 network   ERROR setPortlistByGroup Error : groupAddr = effffffa, status = -1
4232 Apr 22 19:33:04 network   ERROR allocChannGroup : unable to set HW table
4234 Apr 22 19:33:04 network   INFO  IP group effffffa can't be created on chann_p 813a7e44
4236 Apr 22 19:33:04 network   ERROR setPortlistByGroup Error : groupAddr = efc0988f, status = -1
4237 Apr 22 19:33:04 network   ERROR allocChannGroup : unable to set HW table
4238 Apr 22 19:33:04 network   INFO  IP group efc0988f can't be created on chann_p 813a7e44
4240 Apr 22 19:33:04 network   ERROR setPortlistByGroup Error : groupAddr = effffffa, status = -1
4241 Apr 22 19:33:04 network   ERROR allocChannGroup : unable to set HW table
4243 Apr 22 19:33:04 network   INFO  IP group effffffa can't be created on chann_p 813a7e44
4245 Apr 22 19:33:04 network   ERROR setPortlistByGroup Error : groupAddr = efc0988f, status = -1
4246 Apr 22 19:33:04 network   ERROR allocChannGroup : unable to set HW table
4247 Apr 22 19:33:04 network   INFO  IP group efc0988f can't be created on chann_p 813a7e44
4249 Apr 22 19:33:04 network   ERROR setPortlistByGroup Error : groupAddr = effffffa, status = -1
4250 Apr 22 19:33:04 network   ERROR allocChannGroup : unable to set HW table
4252 Apr 22 19:33:04 network   INFO  IP group effffffa can't be created on chann_p 813a7e44
4254 Apr 22 19:33:04 network   ERROR setPortlistByGroup Error : groupAddr = efc0988f, status = -1
4255 Apr 22 19:33:04 network   ERROR allocChannGroup : unable to set HW table
4256 Apr 22 19:33:04 network   INFO  IP group efc0988f can't be created on chann_p 813a7e44
4258 Apr 22 19:33:04 network   ERROR setPortlistByGroup Error : groupAddr = effffffa, status = -1

Хотя бы в какую сторону копать.