RE: [tkined] How to get the engineID?

From: Sanapoori, Hari (hsanapoo@fore.com)
Date: Thu Apr 06 2000 - 16:10:58 MET DST

Hi,

        When I enabled the watch on snmp, I got the following output when I
tried to
        send a request to SNMPv3 Agent I have. It seems there is some
mismatch. But
        I don't understand clearly about the tag 0x82 that is returning from
my SNMPv3
        agent. But scotty says, it is expecting 0x30. What is the tag? Is
this related
        the kind of SNMPv3 Agent supported by scotty.

        Here is the output for the commands....

% Tnm::snmp generator -address 172.16.0.244 -version SNMPv3
snmp0
% snmp0 configure
-address 172.16.0.244 -port 161 -version SNMPv3 -user hsanapoo -context {}
-engineID {} -authPassWord public -privPassWord privat -readSecurity
noAuth/noPriv -writeSecurity md5/des -transport udp -timeout 5 -retries 3
-window 10 -delay 0 -tags {}
% Tnm::snmp watch on
1
% snmp0 getnext 1.3
getnext 21563 noError
   1. 1.3
[0.0.0.0:41004] -> [172.16.0.244:161] (74 bytes):
3048020103300E0202543B0202080004
01040201030418301604000201000201
0004086873616E61706F6F0400040030
1904000400A1130202543B0201000201
003007300506012B0500
[172.16.0.244:161] -> [0.0.0.0:41004] (112 bytes):
3082006C0201033082000E0202543B02
02080004010002010304203082001B04
0C800001460000000000000000020104
0202070904000400040030820032040C
8000014600000000000000000400A820
02010002010002010030820013308200
0F060A2B060106030F01010300410109
invalid tag 0x82 at byte 60 (expected 0x30)
[0.0.0.0:41004] -> [172.16.0.244:161] (74 bytes):
3048020103300E0202543B0202080004
01040201030418301604000201000201
0004086873616E61706F6F0400040030
1904000400A1130202543B0201000201
003007300506012B0500
[172.16.0.244:161] -> [0.0.0.0:41004] (112 bytes):
3082006C0201033082000E0202543B02
02080004010002010304203082001B04
0C800001460000000000000000020104
0202070A04000400040030820032040C
8000014600000000000000000400A820
02010002010002010030820013308200
0F060A2B060106030F0101030041010A
invalid tag 0x82 at byte 60 (expected 0x30)
[0.0.0.0:41004] -> [172.16.0.244:161] (74 bytes):
3048020103300E0202543B0202080004
01040201030418301604000201000201
0004086873616E61706F6F0400040030
1904000400A1130202543B0201000201
003007300506012B0500
[172.16.0.244:161] -> [0.0.0.0:41004] (112 bytes):
3082006C0201033082000E0202543B02
02080004010002010304203082001B04
0C800001460000000000000000020104
0202070B04000400040030820032040C
8000014600000000000000000400A820
02010002010002010030820013308200
0F060A2B060106030F0101030041010B
invalid tag 0x82 at byte 60 (expected 0x30)
[0.0.0.0:41004] -> [172.16.0.244:161] (74 bytes):
3048020103300E0202543B0202080004
01040201030418301604000201000201
0004086873616E61706F6F0400040030
1904000400A1130202543B0201000201
003007300506012B0500
[172.16.0.244:161] -> [0.0.0.0:41004] (112 bytes):
3082006C0201033082000E0202543B02
02080004010002010304203082001B04
0C800001460000000000000000020104
0202070C04000400040030820032040C
8000014600000000000000000400A820
02010002010002010030820013308200
0F060A2B060106030F0101030041010C
invalid tag 0x82 at byte 60 (expected 0x30)
noResponse 0 {}

        I hope somebody will understand the output clearly and appreciate
any
        help to resolve the issue. Pls let me know whether I have an SNMPv3
Agent
        which is not supported by Scotty...

        Thanks,

-Hari

-----Original Message-----
From: Juergen Schoenwaelder [mailto:schoenw@ibr.cs.tu-bs.de]
Sent: Thursday, April 06, 2000 6:22 AM
To: Sanapoori, Hari
Subject: Re: [tkined] How to get the engineID?

>>>>> Sanapoori, Hari writes:

Hari> But, you said that, the engineID is discovered. Could you pls
Hari> correct if I am having the wrong piece of code. I downloaded the
Hari> latest version of scotty-3.00 (Alpha) at the scotty web site.

Well, perhaps you have the wrong agent. ;-)

Seriously, which agent are you talking to? Scotty picks up the
engineID from at least the SNMP Research agent implementation.

It may be useful to actually capture the messages exchanged between
the manager and the agent using an SNMPv3 capable tcpdump or by
turning `snmp watch on'.

/js 

-- 
Juergen Schoenwaelder      Technical University Braunschweig
<schoenw@ibr.cs.tu-bs.de>  Dept. Operating Systems & Computer Networks
Phone: +49 531 391 3289    Bueltenweg 74/75, 38106 Braunschweig, Germany
Fax:   +49 531 391 5936    <URL:http://www.ibr.cs.tu-bs.de/~schoenw/>

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