3Com CoreBuilder 3500, Руководство по внедрению

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SNMP 537
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.
33 VRRP
Authentication
Failure 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
35 QOS Intruder 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.
Table 63
Traps Supported by SNMP (continued)
Trap
No.
Trap Name Source Indication