Supermicro AOC-XEH-IN2 Manual do Utilizador descarregar pdf (Página 94)

Superblade Network Modules User’s Manual

6-30

6-13 SNMP

The SNMP agent in the gigabit switch supports SNMP v1 and v2c. It also supports the

following MIB:

• RFC1213 MIBII with standard sets which include system, interfaces, IP, ICMP, TCP,

UDP, Dot3, and SNMP.

• RFC2011 SNMPv2 MIB for IP using SMIv2

• RFC2665 EtherLike MIB

Table 6-8. IGMP Snooping Screen Controls

Control Description

Robustness Variable

This allows tuning for the expected packet loss on a subnet. If a subnet is

expected to be lossy, the Robustness Variable may be increased. IGMP is robust

to (Robustness Variable-1) packet losses. The Robustness Variable must not be

0, and should not be 1. The default value is 2.

Query Interval

This is the interval between general queries sent by the querier. The default

interval is 125 seconds. By varying the [Query Interval], an administrator may

tune the number of IGMP messages on the subnet; larger values cause IGMP

queries to be sent less often.

Query Response

Interval

This is the maximum response time inserted into the periodic general queries.

The default value is 100 (10 seconds) By varying the query response interval, an

administrator can tune the bursting of IGMP messages on the subnet; larger

values make the traffic less bursty, as host responses are spread out over a

larger interval. The number of seconds represented by the query response

interval must be less than the query interval.

Last Member Query

Interval

This is the maximum response time inserted into group-specific queries sent in

response to Leave Group messages, and is also the amount of time between

group-specific query messages. The default value is 10 (1 second). This value

may be tuned to modify the “leave latency” of the network. A reduced value

results in reduced time to detect the loss of the last member of a group.

Last Member Query

Count

This is the number of Group-Specific Queries sent before the router assumes

there are no local members.Default: the Robustness Variable.

Enable IGMP

Snooping Feature

This is used to enable the IGMP snooping feature.

Router Ports This specifies ports to which IGMP routers were connected.

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