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Full Discussion: basic networking
Special Forums IP Networking basic networking Post 17156 by manderson19 on Monday 11th of March 2002 08:39:40 PM
Old 03-11-2002
first of all, the example you gave is incorrect. if the first octet of the ip address starts with 192, then it is a class C address, not a class B. This means that the mask is 255.255.255.0 by default.

Second of all, you won't have 255 possible ip addresses, you will only have 254. The formula is 2 to the nth power - 2, where n represents the number of unmasked bits i.e., number of zeros in the fourth octet. the minus 2 is because you can't use zero (network number) and you can't use 255 (broadcast). However, some of your newer routers and switches will accomodate the zero network.

Third, if you are connecting computer to computer, make sure your cat 5 cable is a crossover cable, not a straight through or roll over. when connecting like devices, i.e., computer to computer, pin 1 is crossed to pin 3 and pin 2 is crossed to pin 6.

if you have any more questions, feel free to email me personally.

M.
 

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LEARN ABOUT OPENSOLARIS

chxge

chxge(7D)							      Devices								 chxge(7D)

NAME

       chxge - Chelsio Ethernet network interface controllers

SYNOPSIS

       /dev/chxge

DESCRIPTION

       The  chxge  Ethernet  driver  is  a   multi-threaded,  loadable,  clonable, STREAMS hardware driver supporting the connectionless Data Link
       Provider Interface, dlpi(7P), over Chelsio NIC controllers. Multiple (and  mixed) NIC controllers installed within  the	 system  are  sup-
       ported  by  the driver. The chxge driver provides basic support for the NIC hardware. Functions include chip initialization, frame transmit
       and receive, and error recovery and reporting.

APPLICATION PROGRAMMING INTERFACE

       The cloning, character-special device /dev/chxge is used to access NIC devices installed within the system.

CHXGE AND DLPI

       The chxge driver is dependent on /kernel/misc/gld, a loadable kernel  module  that  provides the chxge driver with  the	DLPI  and  STREAMS
       functionality required of a LAN driver. See gld(7D) for more details on the primitives supported by the driver.

       The values returned by the driver in the DL_INFO_ACK primitive in response to the DL_INFO_REQ are:

	   o	  Default Maximum SDU is 1500 (ETHERMTU).

	   o	  dlsap address length is 8.

	   o	  MAC type is DL_ETHER.

	   o	  The  sap  length value is  -2, meaning  the  physical address component is followed immediately by a 2-byte sap component within
		  the DLSAP address.

	   o	  Broadcast address  value is Ethernet/IEEE  broadcast address (FF:FF:FF:FF:FF:FF).

FILES

       /dev/chxge		    Character special device.

       /kernel/drv/sparcv9/chxge    SPARC chxge driver binary.

       /kernel/drv/chxge	    x86 platform kernel module. (32-bit).

       /kernel/drv/amd64/chxge	    x86 platform kernel module. (64-bit).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Architecture		     |SPARC, x86		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       netstat(1M), attributes(5), gld(7D), dlpi(7P), gld(9F), gld_mac_info(9S)

SunOS 5.11							    17 Jan 2005 							 chxge(7D)
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