Cisco Catalyst 2950 Software Configuration Manual page 541

troubleshooting (continued)
with system message logging
trunk ports
configuring 13-22
defined 9-2
trunks
allowed-VLAN list
13-23
load sharing
setting STP path costs
using STP port priorities
native VLAN for untagged traffic
parallel 13-28
pruning-eligible list 13-24
to non-DTP device
13-19
understanding
13-19
twisted-pair Ethernet, detecting unidirectional links
type-of-service
See TOS
U
UDLD
default configuration
18-3
echoing detection mechanism
enabling
globally
18-3
per interface
18-4
link-detection mechanism
neighbor database 18-2
overview
18-1
resetting an interface
18-4
status, displaying 18-5
unauthorized ports 8-4
unicast traffic and protected ports
UniDirectional Link Detection protocol
See UDLD
78-11380-04
21-1
13-28
13-26, 13-27
13-25
18-1
18-2
18-1
17-3
UNIX syslog servers
daemon configuration
facilities supported
21-12
message logging configuration
unrecognized Type-Length-Value (TLV) support
upgrading software
VLAN considerations
UplinkFast
described 12-4
enabling
12-17
support for
1-4
user EXEC mode 2-2
username-based authentication
V
verifying changes in CMS
version-dependent transparent mode
virtual IP address
cluster standby group
command switch 6-15, 6-25
See also IP addresses
vlan.dat file
13-6
VLAN configuration
at bootup 13-9
saving
13-9
VLAN configuration mode
VLAN database
and startup configuration file
and VTP
14-1
VLAN configuration saved in
VLANs saved in 13-6
vlan database command
vlan global configuration command
VLAN ID, discovering
VLAN management domain
VLAN Management Policy Server
See VMPS
Catalyst 2950 Desktop Switch Software Configuration Guide
Index
21-11
21-11
14-8
7-6
3-31
14-4
6-15, 6-25
2-2, 13-8
13-9
13-9
13-8
13-8
7-59
14-2
IN-25
14-4