Элтекс

"28-port 1G/10G Managed Switch" PID: MES2324B VID: 0 SN: ES32006278
Active-image: flash://system/images/mes3300-4014-D374.ros
Version: 4.0.14

VLAN 4094: VLAN is currently used for internal usage.
VLAN 4093: VLAN is currently used for internal usage.
VLAN 4092: VLAN is currently used for internal usage.
VLAN 4091: VLAN is currently used for internal usage.

int statu
Flow Link Uptime Back Mdix
Port Type Duplex Speed Neg ctrl State (d,h:m:s) Pressure Mode Port Mode (VLAN)
-------- ------------ ------ ----- -------- ---- ----------- ------------- -------- ------- ------------------------
gi1/0/1 1G-Copper Full 1000 Enabled Off Up 05,01:49:17 Disabled Off Access (4095)

sho vlan internal usage
Prohibit Internal Usage VLAN list after reset:
Current Prohibit Internal Usage VLAN list:

VLAN Usage
------ ----------
4094 gi1/0/1
4093 gi1/0/12
4092 gi1/0/20
4090 te1/0/2

sho run int gi 1/0/1
interface gigabitethernet1/0/1
ip address 1.1.1.1 255.255.255.255

sho run int gi 1/0/12
interface gigabitethernet1/0/12
description mgm
ip address 10.5.9.238 255.255.255.0

sho run int gi 1/0/20
interface gigabitethernet1/0/20

ip address 10.100.2.13 255.255.255.252
spanning-tree disable
spanning-tree portfast
spanning-tree bpdu filtering

sho run int te 1/0/2
interface tengigabitethernet1/0/2
shutdown
ip address 21.0.0.2 255.255.255.0

From the 3750 Configuration Guide at

http://www.cisco.com/en/US/docs/switche ... wvlan.html

•Each routed port on the switch creates an internal VLAN for its use. These internal VLANs use extended-range VLAN numbers, and the internal VLAN ID cannot be used for an extended-range VLAN. If you try to create an extended-range VLAN with a VLAN ID that is already allocated as an internal VLAN, an error message is generated, and the command is rejected

•Because internal VLAN IDs are in the lower part of the extended range, we recommend that you create extended-range VLANs beginning from the highest number (4094) and moving to the lowest (1006) to reduce the possibility of using an internal VLAN ID.


•Before configuring extended-range VLANs, enter the show vlan internal usage privileged EXEC command to see which VLANs have been allocated as internal VLANs.

alex_bat писал(а):Так что ничего не препятствует использованию IP адреса на самом физическом порту без VLAN.

25-Mar-2020 13:26:49 %2SWMACTBL-I-ADDMACENTRY: Port gi1/0/12 has detected MAC address e0:d9:e3:32:e6:40 that is secure MAC on the interface Po1 (VLAN 4093)

#sho vlan internal usage
Prohibit Internal Usage VLAN list after reset:
Current Prohibit Internal Usage VLAN list:

VLAN Usage
------ ----------
4093 gi1/0/12

Gennadyi писал(а):А фича-то - классическая

From the 3750 Configuration Guide at

http://www.cisco.com/en/US/docs/switche ... wvlan.html

•Each routed port on the switch creates an internal VLAN for its use. These internal VLANs use extended-range VLAN numbers, and the internal VLAN ID cannot be used for an extended-range VLAN. If you try to create an extended-range VLAN with a VLAN ID that is already allocated as an internal VLAN, an error message is generated, and the command is rejected

•Because internal VLAN IDs are in the lower part of the extended range, we recommend that you create extended-range VLANs beginning from the highest number (4094) and moving to the lowest (1006) to reduce the possibility of using an internal VLAN ID.


•Before configuring extended-range VLANs, enter the show vlan internal usage privileged EXEC command to see which VLANs have been allocated as internal VLANs.