Using the SNMP Utilities

4.1 Using the MIB Browser

Table 4–2 (Cont.) Flags for the snmp_request Command

Flag

Description

 

 

 

-l

Specifies loop mode. Note that this flag is the letter l, not the number 1.

 

Valid only if request-typeis GetNext or GetBulk (where flag n is set to

 

0, and flag m is set to a number greater than 0).

 

Causes the master agent to traverse all the MIBs registered with the master

 

agent, starting at the first OID after the one specified in the command.

 

(Note that you can specify only one variable-name[OID].) Responses are

 

received one at a time, and for each one, the OID returned by the master

 

agent is used in a subsequent request. Corresponds to the behavior of

 

standard mibwalk programs.

 

The MIB browser reads and displays responses, and issues requests until

 

the master agent has no more data, times out, or you press Ctrl/Y or Ctrl/C.

 

If specified with the GetBulk request, the -nand -mflags and associated

 

values are ignored, and the behavior is identical to that of GetNext.

 

When the last OID handled by the master agent is reached, you receive a

 

response similar to the following for a query on OID 1.3.6.1.6.3.1.1.6.1 using

 

SNMP Version 1:

 

1.3.6.1.6.3.1.1.6.1.0 = 693056825

 

 

- no such name - returned for variable 1

 

For a query using SNMP Version 2, the example response is:

 

1.3.6.1.6.3.1.1.6.1.0 = 693056825

 

 

1.3.6.1.6.3.1.1.6.1.0 = - end of mib view -

 

These examples assume that:

 

• OID 1.3.6.1.6.3.1.1.6.1.0 is the last OID supported on the target host.

 

• The target host is running an SNMP Version 2 agent.

 

The statement end of mib view refers to OIDs for all MIBs registered with

 

the master agent.

-mmax_repetitions

Specifies the number of repetitions requested for repeating variables.

 

Applies only to the GetBulk and GetNext requests.

 

Note that the resulting display can be confusing because the results for the

 

repeater OIDs are interleaved. That is, the OIDs are displayed in alternate

 

progression for faster memory throughput. If you specify GetBulk without

 

specifying both the -mand -nflags, the results are unpredictable.

-nnon_repeaters

Specifies the number of variables for which no repetition is requested.

 

Applies only to the GetBulk request. If you specify GetBulk without

 

specifying both the -mand -nflags, the results are unpredictable.

-pport

Specifies the port where the request is to be sent. If not specified, the

 

request is sent to well-known SNMP port 161.

-rmax_retries

Specifies the number of times the MIB browser resends a request packet if it times out before receiving a reply. Specify a positive integer for the value (max_retries). If you specify a negative value, it will be converted to an unsigned positive integer. If you specify 0, no retries are tried.

If, after a timeout and a resend, a reply packet is received, the resend counter is reset. After another timeout, the specified number of max_retries is sent.

(continued on next page)

4–4Using the SNMP Utilities

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Image 48
Compaq AAR04BCTE manual Cont. Flags for the snmprequest Command, 6.1.6.3.1.1.6.1.0 = 6.1.6.3.1.1.6.1.0 = end of mib view
Page 47 Page 49

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