Cisco Catalyst 3550 Command Reference Manual page 415

Chapter 2 Cisco IOS Commands
Table 2-27 show vtp counters Field Descriptions
Field
Summary advertisements
received
Subset advertisements
received
Request advertisements
received
Summary advertisements
transmitted
Subset advertisements
transmitted
Request advertisements
transmitted
Number of configuration
revision errors
Number of configuration
digest errors
78-11195-09
Description
Number of summary advertisements received by this switch on its trunk
ports. Summary advertisements contain the management domain name,
the configuration revision number, the update timestamp and identity, the
authentication checksum, and the number of subset advertisements to
follow.
Number of subset advertisements received by this switch on its trunk
ports. Subset advertisements contain all the information for one or more
VLANs.
Number of advertisement requests received by this switch on its trunk
ports. Advertisement requests normally request information on all
VLANs. They can also request information on a subset of VLANs.
Number of summary advertisements sent by this switch on its trunk
ports. Summary advertisements contain the management domain name,
the configuration revision number, the update timestamp and identity, the
authentication checksum, and the number of subset advertisements to
follow.
Number of subset advertisements sent by this switch on its trunk ports.
Subset advertisements contain all the information for one or more
VLANs.
Number of advertisement requests sent by this switch on its trunk ports.
Advertisement requests normally request information on all VLANs.
They can also request information on a subset of VLANs.
Number of revision errors.
Whenever you define a new VLAN, delete an existing one, suspend or
resume an existing VLAN, or modify the parameters on an existing
VLAN, the configuration revision number of the switch increments.
Revision errors increment whenever the switch receives an
advertisement whose revision number matches the revision number of
the switch, but the MD5 digest values do not match. This error means
that the VTP password in the two switches is different or that the
switches have different configurations.
These errors means that the switch is filtering incoming advertisements,
which causes the VTP database to become unsynchronized across the
network.
Number of MD5 digest errors.
Digest errors increment whenever the MD5 digest in the summary packet
and the MD5 digest of the received advertisement calculated by the
switch do not match. This error usually means that the VTP password in
the two switches is different. To solve this problem, make sure the VTP
password on all switches is the same.
These errors mean that the switch is filtering incoming advertisements,
which causes the VTP database to become unsynchronized across the
network.
Catalyst 3550 Multilayer Switch Command Reference
show vtp
2-389