1. An adjustable wireway assembly comprising:
a panel structured to form a portion of an electrical enclosure, the panel having a first aperture defined therein; and
a plate member selectively coupled to the panel about a portion of the first aperture in at least one of a first position and a second position in a manner that blocks at least a portion of the first aperture and thereby defines a second aperture formed from a portion of the first aperture,
wherein when coupled in the first position the second aperture is of a first area and when coupled in the second position the second aperture is of a second area different than the first area.
2. The wireway assembly of claim 1 wherein the plate member includes a number of apertures formed therein; and wherein when the plate member is disposed in either of the first or second positions the plate member is coupled to the panel via a number of threaded fasteners, each protruding through a respective one of the apertures.
3. The wireway assembly of claim 2 wherein each aperture of the number of apertures formed in the plate member is formed as a slot and wherein the plate member is slidable among a number of positions between the first position and the second position.
4. The wireway assembly of claim 3 wherein the plate member is selectively coupled to the panel in any of the number of positions between the first position and the second position.
5. The wireway assembly of claim 1 wherein the plate member is a first plate member; wherein the wireway assembly comprises a second plate member selectively coupled to the panel about another portion of the first aperture on a side opposite the first plate member, the second plate member being selectively coupled to the panel so as to be moveable generally toward or way from the first plate member in at least one of a first position and a second position in a manner that blocks another portion of the first aperture and thereby, along with the first plate member, defines a third aperture formed from a portion of the first aperture, wherein when the second plate member is coupled in the first position the third aperture is of a first area and when coupled in the second position the third aperture is of a second area different than the first area.
6. The wireway assembly of claim 5 wherein the second plate member includes a number of apertures formed therein; and wherein when the second plate member is disposed in either of the first or second positions the second plate member is coupled to the panel via a number of threaded fasteners, each protruding through a respective one of the apertures.
7. The wireway assembly of claim 6 wherein each aperture of the number of apertures formed in the second plate member is formed as a slot and wherein the second plate member is slidable among a number of positions between the first position and the second position.
8. The wireway assembly of claim 7 wherein the second plate member is selectively coupled to the panel in any of the number of positions between the first position and the second position.
9. An electrical enclosure comprising:
a housing formed from a number of panels; and
an adjustable wireway assembly comprising:
one of the panels forming housing, the panel having a first aperture defined therein; and
a plate member selectively coupled to the panel about a portion of the first aperture in at least one of a first position and a second position in a manner that blocks at least a portion of the first aperture and thereby defines a second aperture formed from a portion of the first aperture,
wherein when coupled in the first position the second aperture is of a first area and when coupled in the second position the second aperture is of a second area different than the first area.
10. The electrical enclosure of claim 9 wherein the plate member includes a number of apertures formed therein; and wherein when the plate member is disposed in either of the first or second positions the plate member is coupled to the panel via a number of threaded fasteners, each protruding through a respective one of the apertures.
11. The electrical enclosure of claim 10 wherein each aperture of the number of apertures formed in the plate member is formed as a slot and wherein the plate member is slidable among a number of positions between the first position and the second position.
12. The electrical enclosure of claim 11 wherein the plate member is selectively coupled to the panel in any of the number of positions between the first position and the second position.
13. The electrical enclosure of claim 9 wherein the plate member is a first plate member; wherein the wireway assembly comprises a second plate member selectively coupled to the panel about another portion of the first aperture on a side opposite the first plate member, the second plate member being selectively coupled to the panel so as to be moveable generally toward or way from the first plate member in at least one of a first position and a second position in a manner that blocks another portion of the first aperture and thereby, along with the first plate member, defines a third aperture formed from a portion of the first aperture, wherein when the second plate member is coupled in the first position the third aperture is of a first area and when coupled in the second position the third aperture is of a second area different than the first area.
14. The electrical enclosure of claim 13 wherein the second plate member includes a number of apertures formed therein; and wherein when the second plate member is disposed in either of the first or second positions the second plate member is coupled to the panel via a number of threaded fasteners, each protruding through a respective one of the apertures.
15. The electrical enclosure of claim 14 wherein each aperture of the number of apertures formed in the second plate member is formed as a slot and wherein the second plate member is slidable among a number of positions between the first position and the second position.
16. The electrical enclosure of claim 15 wherein the second plate member is selectively coupled to the panel in any of the number of positions between the first position and the second position.
17. A method of assembling a sealed wireway assembly in an electrical enclosure, the method comprising:
passing a number of wires through an aperture formed in a panel of the electrical enclosure;
generally centering a gasket material disposed about the number of wires in the aperture; and
adjusting the position, with respect to the panel, of a first plate member disposed about the aperture such that a snug fit is produced between at least a portion of the first plate member and the gasket material and between at least a portion of the aperture and the gasket material.
18. The method of claim 17 wherein adjusting the position, with respect to the panel, of the first plate member comprises sliding the first plate member with respect to the panel and coupling the first plate member to the panel.
19. The method of claim 17 further comprising:
adjusting the position, with respect to the panel, of a second plate member disposed about the aperture such that a snug fit is produced between at least a portion of the second plate member and the gasket material and between at least a portion of the first plate member and the gasket material.
20. The method of claim 19 wherein adjusting the position, with respect to the panel, of the second plate member comprises sliding the second plate member with respect to the panel and coupling the second plate member to the panel.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A network relay device, comprising:
a communication unit for sending and receiving communication data,
an authentication processing unit for creating first information specifying an authenticated terminal device according to a result of web authentication that determines whether or not a connection to a specified network by a terminal device connected to the network relay device is permissible, and for managing whether or not relay of communication data between a terminal device and a node on the specified network by the communication unit is permissible based on the first information,
a DHCP snooping processing unit for executing snooping of DHCP communication data relayed by the communication unit between a terminal device and a DHCP server, and for creating second information specifying a layer 3 address allocated to each terminal device based on the DHCP communication data, and
a terminal search processing unit that specifies a terminal device that has already been authenticated based on the first information, specifies a layer 3 address allocated to the specified authenticated terminal device based on the second information, and causes the communication unit to send, to the specified layer 3 address, confirmation communication data for confirming whether or not the specified authenticated terminal is connected to the specified network.
2. A network relay device according to claim 1, wherein
the terminal search processing unit causes the authentication processing unit to cancel authentication for the specified authenticated terminal device when there is no response to the confirmation communication data sent a predetermined number of times from the specified authenticated terminal device.
3. A network relay device according to claim 1, wherein
the terminal search processing unit creates third information specifying a layer 3 address allocated for each authenticated terminal device based on the first information and the second information, and selects authenticated terminal devices registered in the third information in sequence as a subject of confirmation of whether it is connected to the specified network.
4. A network relay device according to claim 3, wherein
the terminal search processing unit registers in the third information an authenticated terminal device when a terminal device is authenticated through the web authentication, and registers in the third information a layer 3 address that is registered in the second information in cases when a layer 3 address is not registered in the third information for the authenticated terminal device selected as the confirmation subject, or when a layer 3 address registered in the third information is not identical with the layer 3 address registered in the second information.
5. A network relay device according to claim 4, wherein
the terminal search processing unit, for an authenticated terminal device selected as the confirmation subject, determines that the selected authenticated terminal device has been reconnected after being detached once from the specified network, when a same correlation as a correlation of the authenticated terminal device and a layer 3 address registered in the third information is not registered in the second information, and a correlation of the authenticated terminal device and another layer 3 address is registered in the second information.
6. A network relay device according to claim 1, further comprising:
a VLAN setting unit for setting a VLAN to a terminal device so that a VLAN before authentication and a VLAN after authentication do not necessarily match.
7. A network relay device according to claim 1, wherein
the first information, the second information, and the third information specify a terminal device using a layer 2 address.
8. A network relay method, comprising:
creating first information specifying an authenticated terminal device according to a result of web authentication that determines whether or not a connection to a specified network by a terminal device is permissible, and managing whether or not relay of communication data between a terminal device and a node on the specified network is permissible based on the first information,
executing snooping of DHCP communication data relayed between a terminal device and a DHCP server, and creating second information specifying a layer 3 address allocated to each terminal device based on the DHCP communication data, and
specifying a terminal device that has already been authenticated based on the first information, specifying a layer 3 address allocated to the specified authenticated terminal device based on the second information, and sending, to the specified layer 3 address, confirmation communication data for confirming whether or not the specified authenticated terminal is connected to the specified network.