Cisco WS-C3550-12G Software Configuration Manual page 791

STP (continued)
EtherChannel guard
described
10-20
enabling
10-37
extended system ID
affects on root switch
affects on the secondary root switch
overview 10-3
unexpected behavior
features
1-3
interface state, blocking to forwarding
interface states
blocking
10-7
disabled
10-8
forwarding 10-7, 10-8
learning 10-7
listening
10-7
overview 10-6
limitations with 802.1Q trunks
load sharing
overview
9-29
using path costs 9-32
using port priorities
loops
9-24
multicast addresses, affect of
overview 10-2
path costs
9-32
Port Fast
configuring 10-32
described
10-10
mode
9-36
port priorities 9-30
preventing root switch selection
redundant connectivity
root guard, described 1-3, 10-20
root port, defined 10-4
78-11194-03
10-23
10-24
10-23
10-10
10-8
9-30
10-8
10-20
10-9
STP (continued)
root switch
affects of extended system ID
configuring
10-23
election 10-3
unexpected behavior
settings in a cascaded stack
shutdown Port Fast-configured interface
supported number of spanning-tree instances
timers, described
10-5
UplinkFast, described
VLAN-bridge 10-9
stratum, NTP
6-32
stub areas, OSPF
22-39
subnet mask 22-5
subnet zero 22-8
summer time
6-44
SunNet Manager 1-6
supernet 22-8
SVIs
and IP unicast routing
and router ACLs 19-2
connecting VLANs
defined
8-4
routing between VLANs
switch clustering technology
See also CMS and clusters
switch clusters, planning considerations
LRE profiles 5-17
switch-specific features
switch console port
1-2
switched packets, ACLs on
switched ports 8-2
Switch Manager
3-2, 3-33
See also Device Manager
switchport block multicast command
switchport block unicast command
switchport command
switchport protected command
Catalyst 3550 Multilayer Switch Software Configuration Guide
Index
10-3, 10-23
10-23
10-30
10-11
10-12
22-3
8-5
9-2
1-1, 1-6, 5-1
5-18
19-39
12-6
12-6
8-12
12-5
10-2
IN-31