Зачем cisco 831 имеет 4 Fastethernet?

А почему бы этой свитчовой плате не иметь 4 FastEth порта?
Только я думал, что у 831 это Eth порты.

Ну есть же Ethernet0, которым можно регулировать LAN.

А разные конфиги на портах свитча бывают?

cisco831(config)#int fastEthernet 1
cisco831(config-if)#?

Interface configuration commands:
access-expression Build a bridge boolean access expression
arp Set arp type (arpa, probe, snap) or timeout
bandwidth Set bandwidth informational parameter
bgp-policy Apply policy propagated by bgp community string
bridge-group Transparent bridging interface parameters
carrier-delay Specify delay for interface transitions
cdp CDP interface subcommands
crypto Encryption/Decryption commands
custom-queue-list Assign a custom queue list to an interface
dampening Enable event dampening
default Set a command to its defaults
delay Specify interface throughput delay
description Interface specific description
dot1x Interface Config Commands for 802.1x
duplex Configure duplex operation.
eou EAPoUDP Interface Configuration Commands
exit Exit from interface configuration mode
fair-queue Enable Fair Queuing on an Interface
flow-sampler Attach flow sampler to the interface
full-duplex Configure full-duplex operational mode
half-duplex Configure half-duplex and related commands
help Description of the interactive help system
hold-queue Set hold queue depth
ip Interface Internet Protocol config commands
keepalive Enable keepalive
llc2 LLC2 Interface Subcommands
load-interval Specify interval for load calculation for an
interface
logging Configure logging for interface
loopback Configure internal loopback on an interface
mac-address Manually set interface MAC address
max-reserved-bandwidth Maximum Reservable Bandwidth on an Interface
mtu Set the interface Maximum Transmission Unit (MTU)
netbios Use a defined NETBIOS access list or enable
name-caching
no Negate a command or set its defaults
ntp Configure NTP
pppoe pppoe interface subcommands
pppoe-client pppoe client
priority-group Assign a priority group to an interface
random-detect Enable Weighted Random Early Detection (WRED) on an
Interface
rate-limit Rate Limit
routing Per-interface routing configuration
service-policy Configure QoS Service Policy
shutdown Shutdown the selected interface
snapshot Configure snapshot support on the interface
snmp Modify SNMP interface parameters
speed Configure speed operation.
timeout Define timeout values for this interface
traffic-shape Enable Traffic Shaping on an Interface or
Sub-Interface
transmit-interface Assign a transmit interface to a receive-only
interface
tx-ring-limit Configure PA level transmit ring limit
xconnect Xconnect commands

А разные конфиги на портах свитча бывают?

Сообщение от zornig Ну вообще-то да...

Это вообще-то был сарказм.