Rats. You can spell check all you want but your brain reads what it wants
to see.
The first sentence of my response below should read, "I am not certain that I
can help you.", of course.
My apologies.
James Shanks
Level 3 Support for Tivoli NetView for UNIX and NT
Tivoli Software / IBM Software Group
----- Forwarded by James Shanks/Raleigh/IBM on 11/21/2002 03:26 PM -----
James Shanks/Raleigh/IBM@IBMUS
11/21/2002 03:25 PM
To: "Allison, Jason (JALLISON)" <JALLISON@arinc.com>
cc: nv-l@lists.tivoli.com
Subject: RE: [nv-l] Source and destination trap addresses
Hello Jason --
I am certain that I can help you. I don't work on the OVsnmp API stuff.
And I am still rather unclear about where you are reading this information
which leads you to believe that these are different, though we could have
a doc problem here, I suppose. But when I examine the OVsnmpPdu structure
in
/usr/OV/include/OV/OVsnmpApi.h, it identifies the agent_addr field as
the source field, not the destination, for the trap.
typedef struct SNMPPdu {
ipaddr address; /* Address of peer (destination) */
int command; /* Type of this PDU */
int request_id; /* Request id */
int error_status; /* SNMP PDU specific error status */
int error_index; /* Index for variable with error */
/*
* Trap information
*/
ObjectID *enterprise; /* System OID */
u_int enterprise_length;
OVipAddr_t agent_addr; /* IP address of object
generating trap */
int generic_type; /* trap type */
int specific_type; /* specific type */
u_long time; /* 1/100 seconds since application
startup */
/*
* Pdu specific community name:
* o On outbound, if non-NULL, this community string overrides
* the default session->community for this Pdu transaction
only.
* If used, the string pointed to by pdu->community must be
* dynamically allocated.
*
* o On inbound, this community string is always set to the
* community string in the received message. This is needed
* so an application can perform community specific processing
* on inbound messages; especially traps.
*
*/
u_char *community; /* community for incoming
traps. */
u_int community_length; /* Length of community
name. */
OVsnmpVarBind *variables;
} OVsnmpPdu;
I can also see that the address field is said to be the address of the
peer (destination), but it would only be the destination on an outgoing
request, because the same structure is used going both ways. But as traps
are always one way, incoming, then if the address field is truly the
address of the peer, then it would be a match for agent_addr, or so I
would think.
But as I said, I don't normally deal with this, so you may have to open a
problem to Support to get more/ better clarification than that.
James Shanks
Level 3 Support for Tivoli NetView for UNIX and NT
Tivoli Software / IBM Software Group
"Allison, Jason (JALLISON)" <JALLISON@arinc.com>
11/20/2002 12:27 PM
To: "'nv-l'" <nv-l@lists.tivoli.com>
cc:
Subject: RE: [nv-l] Source and destination trap addresses
...
readPdu = OVsnmpRecv(trapSession);
if (readPdu != NULL) {
...
// Source Address
printf("%u\n", readPdu->address.sin_addr.s_addr);
// Destination Address
printf("%u\n", readPdu->agent_addr);
...
/* Free Memory Allocated to Pdu */
OVsnmpFreePdu(readPdu);
Coming up equal on all traps. Everything else works fine.
Thanks,
Jason Allison
Principal Engineer
ARINC Incorporated
Office: (410) 266-2006
FAX: (410) 573-3026
-----Original Message-----
From: James Shanks [mailto:jshanks@us.ibm.com]
Sent: Wednesday, November 20, 2002 11:10 AM
To: nv-l@lists.tivoli.com
Subject: Re: [nv-l] Source and destination trap addresses
Maybe nothing, if the trap you are working with is a NetView internal one.
What API call are you using?
James Shanks
Level 3 Support for Tivoli NetView for UNIX and NT
Tivoli Software / IBM Software Group
"Allison, Jason (JALLISON)" <JALLISON@arinc.com>
11/20/2002 08:32 AM
To: "'nv-l'" <nv-l@lists.tivoli.com>
cc:
Subject: [nv-l] Source and destination trap addresses
Having some trouble determining both. From the API:
Source Address: readPdu->address.sin_addr.s_addr
Destination Address: readPdu->agent_addr
Both of these addresses are coming out the same. What am I missing?
Thanks,
Jason Allison
Principal Engineer
ARINC Incorporated
Office: (410) 266-2006
FAX: (410) 573-3026
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