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When the network administrator realized his mistake, he issued another Set command in Frame 21, with the SNMP community name = administrator, and a value for the Trap Receiver Community = trap1. This time, the SNMP Set command was authenticated and the Response (Frame 22) indicated "no error." The third step occurs in Frames 23 and 24, where a GetNext for the SynOptics private MIB objects (Frame 24) verifies that the value has been written as specified.
Trace 7.3a Verifying a Set command (summary)
Sniffer Network Analyzer data 23-Sep at 08:40:52 file SNMP71_7.ENC Pg 1 SUMMARY Delta T Destination Source Summary 5 27.1787 [XXX.YYY.170... Manager SNMP GetNext SynOptics.1.3.2.4.1.0 .. SynOptics.1.3.2.4.21.0 (16 items) 6 0.2388 Manager Hub Agent SNMP GetReply SynOptics.1.3.2.4.2.0 .. SynOptics.2.1.1.1.1.1 (16 items) 7 0.0064 Hub Agent Manager SNMP GetNext SynOptics.1.3.2.4.3.0 .. SynOptics.1.3.2.4.9.0 (7 items) SynOptics.1.3.2.4.1 .. SynOptics.1.3.2.4.21 (16 items) 24 0.2185 Manager Hub Agent SNMP GetReply SynOptics.1.3.2.4.1.0 .. SynOptics.1.3.2.4.21.0 (16 items)
Trace 7.3b Verifying a Set command (details)
Sniffer Network Analyzer data 23-Sep at 08:40:52, file SNMP71_7.ENC, Pg 1 -------------------------- Frame 6 ---------------------------- SNMP: ----- Simple Network Management Protocol (Version 1) ---- SNMP: SNMP: Version = 0 SNMP: Community = public SNMP: Command = Get response SNMP: Request ID = 717281288 SNMP: Error status = 0 (No error) SNMP: Error index = 0 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.2.0} (SynOptics.1.3.2.4.2.0) SNMP: Value = 0 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.11.0} (SynOptics.1.3.2.4.11.0) SNMP: Value = [255.255.255.0] SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.12.0} (SynOptics.1.3.2.4.12.0) SNMP: Value = [XXX.YYY.170.250] SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.13.0} (SynOptics.1.3.2.4.13.0) SNMP: Value = [XXX.YYY.170.20], Manager SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.14.0} (SynOptics.1.3.2.4.14.0) SNMP: Value = /tftpboot/syn2.cfg SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.15.0} (SynOptics.1.3.2.4.15.0) SNMP: Value = 2 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.16.0} (SynOptics.1.3.2.4.16.0) SNMP: Value = 1 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.17.0} (SynOptics.1.3.2.4.17.0) SNMP: Value = 9600 (gauge) SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.18.0} (SynOptics.1.3.2.4.18.0) SNMP: Value = SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.19.0} (SynOptics.1.3.2.4.19.0) SNMP: Value = SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.1.XXX.YYY.170.20} (SynOptics.1.3.2.4.20.1.1.XXX.YYY ... SNMP: Value = 1 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.3.0} (SynOptics.1.3.2.4.3.0) SNMP: Value = 1 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.2.XXX.YYY.170.20} (SynOptics.1.3.2.4.20.1.2.XXX.YYY ... SNMP: Value = [XXX.YYY.170.20], Manager SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.3.XXX.YYY.170.20} (SynOptics.1.3.2.4.20.1.3.XXX.YYY ... SNMP: Value = public SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.21.0} (SynOptics.1.3.2.4.21.0) SNMP: Value = 2 SNMP: SNMP: Object = {1.3.6.1.4.1.45.2.1.1.1.1.1} (SynOptics.2.1.1.1.1.1) SNMP: Value = 1 SNMP: . . . -------------------------- Frame 9 ---------------------------- SNMP: ----- Simple Network Management Protocol (Version 1) ---- SNMP: SNMP: Version = 0 SNMP: Community = public SNMP: Command = Set request SNMP: Request ID = 717288552 SNMP: Error status = 0 (No error) SNMP: Error index = 0 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.3.XXX.YYY.170.20} (SynOptics.1.3.2.4.20.1.3.XXX.YYY ... SNMP: Value = test SNMP: -------------------------- Frame 10 --------------------------- SNMP: ----- Simple Network Management Protocol (Version 1) ---- SNMP: SNMP: Version = 0 SNMP: Community = public SNMP: Command = Trap SNMP: Enterprise = {1.3.6.1.4.1.45.3.8.1} SNMP: Network address = [XXX.YYY.170.53] SNMP: Generic trap = 4 (Authentication failure) SNMP: Specific trap = 0 SNMP: Time ticks = 57631330 SNMP: . . . --------------------------- Frame 21 -------------------------- SNMP: ----- Simple Network Management Protocol (Version 1) ----- SNMP: SNMP: Version = 0 SNMP: Community = administrator SNMP: Command = Set request SNMP: Request ID = 717288651 SNMP: Error status = 0 (No error) SNMP: Error index = 0 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.3.XXX.YYY.170.20} (SynOptics.1.3.2.4.20.1.3.XXX.YYY ... SNMP: Value = trap1 SNMP: -------------------------- Frame 22 --------------------------- SNMP: ----- Simple Network Management Protocol (Version 1) ----- SNMP: SNMP: Version = 0 SNMP: Community = administrator SNMP: Command = Get response SNMP: Request ID = 717288651 SNMP: Error status = 0 (No error) SNMP: Error index = 0 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.3.XXX.YYY.170.20} (SynOptics.1.3.2.4.20.1.3.XXX.YYY ... SNMP: Value = trap1 SNMP: . . . -------------------------- Frame 24 --------------------------- SNMP: ----- Simple Network Management Protocol (Version 1) ----- SNMP: SNMP: Version = 0 SNMP: Community = public SNMP: Command = Get response SNMP: Request ID = 717281434 SNMP: Error status = 0 (No error) SNMP: Error index = 0 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.1.0} (SynOptics.1.3.2.4.1.0) SNMP: Value = 2 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.10.0} (SynOptics.1.3.2.4.10.0) SNMP: Value = [XXX.YYY.170.53] SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.11.0} (SynOptics.1.3.2.4.11.0) SNMP: Value = [255.255.255.0] SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.12.0} (SynOptics.1.3.2.4.12.0) SNMP: Value = [XXX.YYY.170.250] SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.13.0} (SynOptics.1.3.2.4.13.0) SNMP: Value = [XXX.YYY.170.20], Manager SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.14.0} (SynOptics.1.3.2.4.14.0) SNMP: Value = /tftpboot/syn2.cfg SNMP: Value = /tftpboot/syn2.cfg SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.15.0} (SynOptics.1.3.2.4.15.0) SNMP: Value = 2 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.16.0} (SynOptics.1.3.2.4.16.0) SNMP: Value = 1 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.17.0} (SynOptics.1.3.2.4.17.0) SNMP: Value = 9600 (gauge) SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.18.0} (SynOptics.1.3.2.4.18.0) SNMP: Value = SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.19.0} (SynOptics.1.3.2.4.19.0) SNMP: Value = SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.2.0} (SynOptics.1.3.2.4.2.0) SNMP: Value = 0 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.1.XXX.YYY.170.20} SynOptics.1.3.2.4.20.1.1.XXX.YYY ... SNMP: Value = 1 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.2.XXX.YYY.170.20} (SynOptics.1.3.2.4.20.1.2.XXX.YYY ... SNMP: Value = [XXX.YYY.170.20], Manager SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.20.1.3.XXX.YYY.170.20} (SynOptics.1.3.2.4.20.1.3.XXX.YYY ... SNMP: Value = trap1 SNMP: SNMP: Object = {1.3.6.1.4.1.45.1.3.2.4.21.0} (SynOptics.1.3.2.4.21.0) SNMP: Value = 2 SNMP:
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