3Com corebuilder 3500 Implementation Manual page 537

Table 63 Traps Supported by SNMP (continued)
Trap
No. Trap Name
33 VRRP
Authentication
Failure
35 QOS Intruder
To minimize SNMP traffic on your network, you can implement
trap-based polling. Trap-based polling allows the management station to
start polling only when it receives certain traps. Your management
applications must support trap-based polling for you to take advantage
of this feature.
Source Indication
VRRP MIB A VRRP packet is received from a router
whose authentication failed. The
authentication failure under this trap is
sub-divided under three types:
Invalid authentication type
Authentication type is valid, but does
not match the type configured
Authentication type is valid and
matches, but has the wrong key
QOS MIB This trap is generated when a user
attempts to access a network restricted
with a QoS One-Way TCP Filter. The
trap contains the following information:
Source IP Address
Destination IP Address
Destination IP Port Number
QoS Classifier Number
To prevent a denial-of-service (DOS)
attack, the system will not generate
more than one QOS Intruder trap per
second. Thus, an attacker cannot flood
a management station with traps or
overload a switch's ability to pass or
handle messages.
SNMP 537