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