26.
100- Ethernet.
: ..
: .
: 09.03.2009
2009
26.
1.1. .
1.2. Ethernet.
1.3. , 100 M/.
213.
.
3- . 6.6-6.8 .
<Quidway>
?
User view commands:
cd Change current directory
clock Specify the system clock
copy Copy from one file to another
debugging Enable system debugging functions
delete Delete a file
dialer Dialer disconnect
dir List files on a file system
display Display current system information
fixdisk Recover lost chains in storage device
format Format the device
free Clear user terminal interface
ftp Open FTP connection
hwtacacs Specify HWTACACS server
language-mode Specify the language environment
lock Lock current user terminal interface
log Settings of startup configuration log
looptest Send packets for loopback test
mkdir Create a new directory
more Display the contents of a file
move Move a file
msdp-tracert MSDP traceroute to source RP
mtracert Trace route to multicast source
nslookup Query Internet name servers
pad Establish one PAD connection
<Quidway>system-view
System View: return to User View with Ctrl+Z.
[Quidway]local-user admin1
New local user added.
[Quidway-luser-admin1]password simple girf
[Quidway-luser-admin1]user privilege level 2
^
% Unrecognized command found at '^' position.
[Quidway-luser-admin1]quit
5 .
1. 100 Base Ethernet. ?
Reconciliation. , .
MII Media Independence Interface. . , , MAC.
PCS Physical Coding System. .
PMA Physical Media Attachment. .
PMD Physical Media Dependent. (RJ-45) .
|
|
|
(autonegotiation): , .
MII.
MII , . , MAC-. , . , , .. .
(PHY)
. , , . , .
(), () .
, . . , . , , , . . , , : V.35, RS-232C, RJ-11, RJ-45, AUI BNC.
OSI:
;
( , , ..);
, ;
(handshaking) .
4. 1000 Base Ethernet?
802.3z (1000 Base-X ) 802.3ab (1000 Base-T ).
