>In contrast to the IPX-based implementation described below, packet >captures seem to reveal that NCP DOES rely on a transport layer when using >IP as a network layer mechanism.
What version of NetWare? It's my understanding that 5.x is native TCP/IP with encapsulated IPX available for backwards compatibility. Incidentally, older IPX-based NCP had an integrated transport function, not SPX but something called PEP. > > Flags: 0x00 > Status: 0x00 > Packet Length:66 > Timestamp: 19:09:38.677828 03/12/2001 >Ethernet Header > Destination: 00:90:7F:0F:0B:D5 > Source: 00:10:A4:F5:5A:66 > Protocol Type:0x0800 IP >IP Header - Internet Protocol Datagram > Version: 4 > Header Length: 5 (20 bytes) > Precedence: 0 > Type of Service: %0000 > Unused: %0 > Total Length: 48 > Identifier: 14671 > Fragmentation Flags: %010 Do Not Fragment > Fragment Offset: 0 (0 bytes) > Time To Live: 128 > IP Type: 0x06 TCP > Header Checksum: 0xF3B3 > Source IP Address: 210.225.86.53 > Dest. IP Address: xxx.xxx.xxx.x xxx.xx.xxxxxx.xxx > No Internet Datagram Options >TCP - Transport Control Protocol > Source Port: 2583 > Destination Port: 524 NCP > Sequence Number: 1273813107 > Ack Number: 0 > Offset: 7 > Reserved: %000000 > Code: %000010 > Synch Sequence > Window: 16384 > Checksum: 0x44D7 > Urgent Pointer: 0 > TCP Options: > Option Type: 2 Maximum Segment Size > Length: 4 > MSS: 1460 > Option Type: 1 No Operation > Option Type: 1 No Operation > Option Type: 4 > Length: 2 > Opt Value: > TCP Data Area: No more data. >Frame Check Sequence: 0x04007C00 > > > > > >"Priscilla Oppenheimer" @groupstudy.com on 11/12/2001 >02:55:08 PM > >Please respond to "Priscilla Oppenheimer" > >Sent by: [EMAIL PROTECTED] > >To: [EMAIL PROTECTED] >cc: (bcc: Kevin Cullimore) >Subject: RE: What frame format used by TCP/IP? [7:25924] > > >TCP/IP tells the Ethernet driver what kind of frame type to use and 99.99% >percent of TCP/IP implementations tell the driver to use Ethernet II, which >is the frame format that has Dest Src Type. This is also known as arpa in >the Cisco world. > >Is this what you were looking for, though? Or were you looking for a >comparison of IP with IPX and a comparison of SPX with TCP, which I could >write lots about too. ;-) > >One main difference between SPX and TCP, by the way, is that SPX is not >used much. It's used by RCONSOLE for remote administration and some SNA >gateways. Some printing services may use it. But most printing, file >sharing, etc. uses NetWare Core Protocol (NCP) which runs directly above >IPX. > >TCP, on the other hand, plays a major role in it stack. Many protocols run >above TCP, including FTP, HTTP, Telnet, SMTP, POP, LDAP, BGP, and others. > >Priscilla Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26020&t=25924 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
