User's Manual

Index
IN-52
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
STP (continued)
default optional feature configuration 22-12
designated port, defined 20-4
designated switch, defined 20-4
detecting indirect link failures 22-8
disabling 20-15
displaying status 20-24
EtherChannel guard
described
22-10
disabling 22-17
enabling 22-17
extended system ID
effects on root switch
20-16
effects on the secondary root switch 20-17
overview 20-4
unexpected behavior 20-16
features supported 1-8
IEEE 802.1D and bridge ID 20-4
IEEE 802.1D and multicast addresses 20-8
IEEE 802.1t and VLAN identifier 20-5
inferior BPDU 20-3
instances supported 20-10
interface state, blocking to forwarding 22-2
interface states
blocking
20-6
disabled 20-7
forwarding 20-6, 20-7
learning 20-7
listening 20-7
overview 20-5
interoperability and compatibility among
modes
20-10
keepalive messages 20-2
Layer 2 protocol tunneling 19-8
limitations with IEEE 802.1Q trunks 20-10
load sharing
overview
15-22
using path costs 15-24
using port priorities 15-22
STP (continued)
loop guard
described
22-11
enabling 22-18
modes supported 20-9
multicast addresses, effect of 20-8
optional features supported 1-8
overview 20-2
path costs 15-24, 15-25
Port Fast
described
22-2
enabling 22-12
port priorities 15-23
preventing root switch selection 22-10
protocols supported 20-9
redundant connectivity 20-8
root guard
described
22-10
enabling 22-18
root port, defined 20-3
root port selection on a switch stack 20-3
root switch
configuring
20-16
effects of extended system ID 20-4, 20-16
election 20-3
unexpected behavior 20-16
shutdown Port Fast-enabled port 22-2
stack changes, effects of 20-11
status, displaying 20-24
superior BPDU 20-3
timers, described 20-22
UplinkFast
described
22-3
enabling 22-15
VLAN-bridge 20-11
stratum, NTP 7-2
stub areas, OSPF 42-31
stub routing, EIGRP 42-42
subdomains, private VLAN 18-1