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IN-31
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
UniDirectional Link Detection protocol
See UDLD
UNIX syslog servers
daemon configuration 26-10
facilities supported 26-11
message logging configuration 26-11
unrecognized Type-Length-Value (TLV) support 17-4
upgrade
behavior details 12-25
configuring for 12-23
controller configuration 12-24
example 12-26
global configuration 12-24
LRE switch firmware upgrade 12-23
performing 12-23, 12-24
upgrading software, VLAN considerations 17-8
upgrading software images
See downloading
UplinkFast
described 15-3
enabling 15-17
support for 1-5
uploading
configuration files
preparing B-10, B-12, B-15
reasons for B-8
using FTP B-13
using RCP B-17
using TFTP B-11
image files
preparing B-20, B-23, B-27
reasons for B-18
using FTP B-25
using RCP B-30
using TFTP B-22
upstream power back-off 1-9, 12-20
user EXEC mode 2-2
username-based authentication 8-7
V
version-dependent transparent mode 17-4
virtual IP address
cluster standby group 6-10
command switch 6-10
vlan.dat file 16-4
VLAN 1 minimization, support for 1-6
VLAN configuration
at bootup 16-7
saving 16-7
VLAN configuration mode 2-2, 16-6
VLAN database
and startup configuration file 16-7
and VTP 17-1
VLAN configuration saved in 16-6
VLANs saved in 16-4
vlan database command 16-6
vlan global configuration command 16-6
VLAN ID, discovering 7-26
VLAN management domain 17-2
VLAN Management Policy Server
See VMPS
VLAN membership
confirming 16-27
modes 16-3
VLAN Query Protocol
See VQP
VLANs
adding 16-8
adding to VLAN database 16-8
aging dynamic addresses 13-8
allowed on trunk 16-18
and spanning-tree instances 16-2, 16-6, 16-12
configuration guidelines, normal-range VLANs 16-5
configuration options 16-6
configuring 16-1
configuring IDs 1006 to 4094 16-11
creating in config-vlan mode 16-8