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MIB_IPMCAST_SCOPE structure

The MIB_IPMCAST_SCOPE structure contains a multicast scope name and the associated IPv4 multicast group address and mask that define the scope.

Syntax


typedef struct _MIB_IPMCAST_SCOPE {
  DWORD dwGroupAddress;
  DWORD dwGroupMask;
  WCHAR snNameBuffer[256];
  DWORD dwStatus;
} MIB_IPMCAST_SCOPE, *PMIB_IPMCAST_SCOPE;

Members

dwGroupAddress

Type: DWORD

A 32-bit integer representation of the IPv4 group address which, when combined with the corresponding value in dwGroupMask, identifies the group range for which the multicast scope exists.

Note  Scoped addresses must come from the range 239.*.*.* as specified in RFC 2365.

dwGroupMask

Type: DWORD

A 32-bit integer representation of the IPv4 group address mask which, when combined with the corresponding value in dwGroupAddress, identifies the group range for which the multicast scope exists.

snNameBuffer

Type: WCHAR[256]

A Unicode character array that contains the text name associated with the multicast scope. The name should be suitable for display to multicast application users.

If no name is specified, the default name is the string representation of the scoped address in dwGroupAddress with the address and mask length appended and separated by a backslash "/" character, of the form "239.*.*.*.x/y", where x is the address length and y is the mask length.

dwStatus

Type: DWORD

A status value that describes the current status of this row in a MFE scope table.

ValueMeaning
1

Row has active status.

2

Row has notInService status.

3

Row has notReady status.

4

Row has createAndGo status.

5

Row has createAndWait status.

6

Row has destroy status.

 

Remarks

Note that the Iprtrmib.h header file is automatically included in the Iphlpapi.h header file. The Iprtrmib.h header files should never be used directly.

Requirements

Minimum supported client

None supported

Minimum supported server

Windows Server 2008, Windows Server 2003 with SP1 [desktop apps only]

Header

Iprtrmib.h (include Iphlpapi.h)

 

 

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