Specifications

Index
IN-26
Catalyst 2970 Switch Software Configuration Guide
78-15462-03
sticky learning 19-8
storm control
configuring
19-3
described 19-2
displaying 19-15
support for 1-3
thresholds 19-2
STP
802.1D and bridge ID
14-4
802.1D and multicast addresses 14-8
802.1T and VLAN identifier 14-4
accelerating root port selection 16-4
BackboneFast
described
16-5
enabling 16-13
BPDU filtering
described
16-3
enabling 16-12
BPDU guard
described
16-3
enabling 16-11
BPDU message exchange 14-3
configuration guidelines 14-12, 16-9
configuring
forward-delay time
14-21
hello time 14-20
maximum aging time 14-21
path cost 14-18
port priority 14-17
root switch 14-14
secondary root switch 14-16
spanning-tree mode 14-13
switch priority 14-19
counters, clearing 14-22
default configuration 14-11
default optional feature configuration 16-9
designated port, defined 14-3
designated switch, defined 14-3
detecting indirect link failures 16-6
disabling 14-14
displaying status 14-22
extended system ID
effects on root switch
14-14
effects on the secondary root switch 14-16
overview 14-4
unexpected behavior 14-14
features supported 1-4
inferior BPDU 14-3
instances supported 14-9
interface state, blocking to forwarding 16-2
interface states
blocking
14-5
disabled 14-7
forwarding 14-5, 14-6
learning 14-6
listening 14-6
overview 14-4
interoperability and compatibility among modes 14-10
limitations with 802.1Q trunks 14-10
load sharing
overview
11-22
using path costs 11-24
using port priorities 11-22
loop guard
described
16-8
enabling 16-15
modes supported 14-9
multicast addresses, effect of 14-8
optional features supported 1-5
overview 14-2
path costs 11-24, 11-25
Port Fast
described
16-2
enabling 16-10
port priorities 11-23
preventing root switch selection 16-7
protocols supported 14-9
redundant connectivity 14-8