JP2000165429A - Switching device with management function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switching device with management function that replies to an inquiry of configuration information even when no IP address is set to the switching device with management function. SOLUTION: The switching device has a plurality of interfaces and relays a transmission frame between networks connected to the interfaces. The switching device is provided with a configuration information reply means 102 that returns stored configuration information when a transmission frame received by the interface is a configuration information inquiry protocol frame that inquires about configuration information of a network equipment without using an IP address.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device with a management function having a function of responding to a query for configuration information, and more particularly to a switch device with a management function for which an IP address has not been set even if the switch device has a management function. The present invention relates to a switch device with a management function that can respond.

[0002]

2. Description of the Related Art A switching device has a plurality of interfaces and can relay a transmission frame between networks (hosts and local area networks) connected to these interfaces. The switch device with the management function can collect the frame information by receiving the transmission frame in the network. This switch device with a management function returns frame information in response to an inquiry from another switch device with a management function.

On the other hand, a switch device with a management function holds at least its own configuration information (hereinafter, referred to as a switch device with a management function), and switches with another management function on a network (hereinafter referred to as a partner management switch device). Function device) is inquired about the configuration information using SNMP (Simple Network Management Protocol),
The held configuration information can be returned in response to the inquiry. Therefore, the switch device with the partner management function can acquire the configuration information of the switch device with the management function. However, if the switch device with the partner management function is S
To use NMP, the switch device with management function
The P address must already be set. Until the IP address of the switch device with the management function is set, the switch device with the partner management function cannot acquire the configuration information of the switch device with the management function.

[0004]

In the conventional switch device with the management function, the switch device with the other party management function remains in the configuration information of the switch device with the management function until the IP address of the switch device with the management function is set. Can not get.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a switch device with a management function that can respond to an inquiry about configuration information even with a switch device with a management function in which an IP address is not set. is there.

[0006]

According to the present invention, there is provided a switch apparatus having a plurality of interfaces and relaying a transmission frame between networks connected to the interfaces. If the received transmission frame is a configuration information inquiry protocol frame for inquiring the configuration information of the network device without using the IP address, the configuration information returning means for returning the held configuration information is provided.

When the destination address of the transmission frame received by the interface is a specific multicast address, the configuration information returning means determines that the transmission frame is the configuration information inquiry protocol frame, and The configuration information may be returned to the source address.

[0008]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

As shown in FIG. 1, a switch device with a management function according to the present invention stores collected frame information and a memory 101 for storing configuration information, and performs processing for a configuration information inquiry in accordance with a given procedure. Processor 102, MAC control LSIs 111 and 11 that perform communication processing based on standards such as Ethernet (registered trademark)
2, 113, and port circuits 121, 122, and 123 for transmitting and receiving a transmission frame from a transmission line of a network.

[0010] MAC control LSIs 111, 112, 113
The port circuits 121, 122, and 123 constitute an interface to a network.

The processor 102 returns the configuration information held in the memory 101 when the transmission frame received by the interface is a configuration information inquiry protocol frame for inquiring the configuration information of the network device without using the IP address. It constitutes configuration information returning means. The configuration information returning means, when the destination address of the transmission frame received by the interface is a specific multicast address, determines that the transmission frame is a configuration information inquiry protocol frame,
The configuration information is returned to the source address of the transmission frame.

As shown in FIG. 2, the MAC frame includes a MAC header for storing data of the frame itself, a payload for storing data of communication contents, and a frame check sequence (F) for performing a check by CRC.
CS), the MAC header includes a destination MAC address (DA) 201, a source MAC address (SA), and a protocol identifier (PID).

The switch device with the management function shown in FIG. 1 monitors a transmission frame on the network, and selectively extracts only a frame having a specific multicast MAC address from the transmission frames. Specifically, in the MAC control LSIs 111, 112, 113, the port circuit 1
The transmission frame is received from the network via 21, 122, and 123, and the frame whose destination MAC address 201 of the MAC frame is "01: 40: 66: 10: 41: 12" is selectively extracted. This multicast MAC
The frame having the address is a configuration information inquiry protocol frame.

In the MAC control LSI, the destination MAC address 201 of the MAC frame is "01: 40: 66: 10:
If a frame of 41:12 ″ is received, an interrupt signal is sent to the processor 102.
When an interrupt signal is received from the C control LSI, the destination MAC address 201 is referred to as "01: 40: 66: 10: 41: 1" by referring to the contents of the data stored in the MAC header.
2 ", it is confirmed that the received frame is a configuration information inquiry protocol frame. If the received frame is a configuration information inquiry protocol frame, the processor 102 assembles a configuration information return frame and outputs the configuration information inquiry frame. The return frame is passed to the MAC control LSI that issued the interrupt signal.
I processes the passed configuration information return frame data to form a MAC frame based on the standard such as Ethernet, and transmits the configuration information return frame, which is the MAC frame, to the transmission path of the network via the port circuit. I do.

The source address of the configuration information inquiry protocol frame is stored in the destination address of the configuration information return frame. Therefore, the configuration information return frame is returned to the device inquiring about the configuration information.

As shown in FIG. 3, the data stored in the payload portion of the configuration information return frame includes the MAC address 301 of the switch device with the management function, the number of ports of the switch device with the management function (the number of port circuits). ) 302,
It is composed of an IP address 303 of the switch device with the management function and port setting contents 304 for each port number of the switch device with the management function.

The number of ports of the switch device with the management function is a value determined by the hardware of the switch device with the management function. The switch device with the management function recognizes it as its own configuration information in advance and stores it in the memory 101. ing.
Therefore, the value held in the memory 101 is stored in the port number 302 of the configuration information return frame.

The setting contents of the port for each port number are values set by the user, but when the user is not set, they are the values set at the time of shipment from the factory, and the switch device with the management function recognizes it as its own configuration information. And stored in the memory 101. Therefore, the setting content 3 of the configuration information return frame
04 stores the value held in the memory 101.
The IP address is a value set by the user, but is not set here. When the IP address is not set, the IP address 303 of the configuration information return frame includes
“0” is stored.

Since the IP address of the switch device with the management function has not been set, the switch device with the partner management function cannot acquire the configuration information of the switch device with the management function in the prior art. In the present invention, when the switch device with the partner management function inquires the switch device with the management function of the configuration information using the frame having the specific multicast MAC address “01: 40: 66: 10: 41: 12”, The switch device with the management function returns the configuration information to the switch device with the management function. Therefore, even when the IP address of the switch device with the management function is not set, the switch device with the partner management function can return the configuration information of the switch device with the management function. Can be obtained. Similarly, the switch device with the management function can acquire the configuration information of the switch device with the partner management function even if the IP address of the switch device with the partner management function is not set.

According to the present invention, even if the switch device with the management function is simply connected to the network and the IP address is not set in the switch device with the partner management function,
The configuration information of the switch device with the partner management function itself can be obtained. Further, the information of other devices connected to the network held by the switch device with the partner management function and the configuration information of the device can be obtained. can do.
Therefore, the switch device with the management function can know the configuration information of the network device more easily than before.

[0021]

The present invention exhibits the following excellent effects.

(1) Even a switch device with a management function in which an IP address is not set can respond to an inquiry about configuration information. We can know information.

[Brief description of the drawings]

FIG. 1 is an internal configuration diagram of a switch device with a management function according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a MAC frame.

FIG. 3 is a configuration diagram of a configuration information return frame used in the present invention.

[Explanation of symbols]

101 memory 102 processor (configuration information returning means) 111, 112, 113 MAC control LSI (interface) 121, 122, 123 port circuit (interface)

Claims (2)

[Claims] 1. A switch device having a plurality of interfaces and relaying a transmission frame between networks connected to the interfaces, wherein the transmission frame received by the interface does not use an IP address. A switch device with a management function, comprising: a configuration information returning means for returning the held configuration information in the case of a configuration information inquiry protocol frame for inquiring configuration information of a device. 2. The configuration information returning means, when a destination address of a transmission frame received by the interface is a specific multicast address, determines that the transmission frame is the configuration information inquiry protocol frame, and 2. The switch device with a management function according to claim 1, wherein configuration information is returned to a source address of the frame.