Cisco Catalyst 2950 - Page 671

Index
IN-29
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-12
U
UDLD
default configuration
22-4
echoing detection mechanism 22-3
enabling
globally
22-5
per interface 22-6
link-detection mechanism 22-1
neighbor database 22-2
overview 22-1
resetting an interface 22-6
status, displaying 22-7
unauthorized ports with IEEE 802.1x 9-4
unicast MAC address filtering
and adding static addresses
7-25
and broadcast MAC addresses 7-25
and CPU packets 7-25
and multicast addresses 7-25
and router MAC addresses 7-25
configuration guidelines 7-25
described 7-25
unicast storm control
See storm control
unicast traffic, blocking
21-5
UniDirectional Link Detection protocol
See UDLD
UNIX syslog servers
daemon configuration
26-11
facilities supported 26-12
message logging configuration 26-11
unrecognized Type-Length-Value (TLV) support 17-4
upgrade
behavior details
12-26
configuring for 12-24
controller configuration 12-25
example 12-27
global configuration 12-25
LRE switch firmware upgrade 12-24
performing 12-24, 12-25
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-13, B-16
reasons for B-8
using FTP B-14
using RCP B-18
using TFTP B-12
image files
preparing
B-22, B-25, B-29
reasons for B-19
using FTP B-27
using RCP B-32
using TFTP B-24
upstream power back-off 1-9, 12-21
user EXEC mode 2-2
username-based authentication 8-7
V
version-dependent transparent mode 17-4
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 16-7
VLANs saved in 16-4