and the setting of duplex on key switch ports. Switches support IP, but in a very different way
than with a router. The switch acts more like a normal IP host, with a single address/mask for
the switch and a default router. Each port/interface does not need an IP address because the
switch is not performing Layer 3 routing. In fact, if there were no need to manage the switch,
IP would not be needed on the switch at all.
always use half or full duplex rather than allow negotiation. At times, autonegotiation can
produce unpredictable results. For instance, if a device attached to the switch does not support
autonegotiation, the Catalyst switch sets the corresponding switch port to half-duplex mode by
default. If the attached device is configured for full duplex, late collision errors will occur at the
full-duplex end. To avoid this situation, manually set the duplex parameters of the switch to
match the attached device when support for autonegotiation is in question.
Current configuration:
!
!
interface Ethernet 0/1
!
interface Ethernet 0/2
! Portions omitted for brevity...
Port path cost 100, Port priority 128
Designated root has priority 32768, address 0090.8673.3340
Designated bridge has priority 32768, address 0090.8673.3340
Designated port is Ethernet 0/1, path cost 0
Timers: message age 20, forward delay 15, hold 1
! Portions omitted for brevity...
wg_sw_a#show vlan-membership
------------------------------------------------------------------
1
3 1 Static 15 1 Static