Problem: Some device polls fail and will then generate an outage. The situation is that these devices are not down. It is just that for that poll no response came back.
Before I go and try changing anything like timeouts and device down
threshold for lost packets, I am looking to see if anyone else has
experienced this situation, and any suggestions on how to resolve it.
Environment:
Host Server: Sun Enterprise 250
Host Version: SunOS 5.9 (Solaris 9)
IM Server Version: 4.2.4b5
IM Monitoring: 1319 devices
Polling Method For All Devices: Ping
Polling Period: Majority at 2 minutes
Some routers and servers at 1 minute
Trouble shooting:
Ran snoop on the server until we saw some of these missed polls.
Verified that the ping was sent out (3 pings, 3 seconds apart)
I am including the snoop data. I already removed any lines not relevant
to this device. I am only including the snoop for this time period
showing a successful poll both before and after the poll with out replies.
At 9:38:50 the first of three ICMP requests where sent with out getting
any reply.
109147 9:35:55.40969 rit010n19 -> x009-066m-15n3.rit.edu ETHER
Type=0800 (IP), size = 90 bytes
109147 9:35:55.40969 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=76, ID=40891, TOS=0x0, TTL=255
109147 9:35:55.40969 rit010n19 -> x009-066m-15n3.rit.edu UDP D=123
S=123 LEN=56
109147 9:35:55.40969 rit010n19 -> x009-066m-15n3.rit.edu NTP server
(Mon Jan 24 09:35:55 2005)
113986 9:36:50.78327 rit010n19 -> x009-066m-15n3.rit.edu ETHER
Type=0800 (IP), size = 62 bytes
113986 9:36:50.78327 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=48, ID=40892, TOS=0x0, TTL=255
113986 9:36:50.78327 rit010n19 -> x009-066m-15n3.rit.edu ICMP Echo
request (ID: 27552 Sequence number: 43572)
113987 9:36:50.78391 x009-066m-15n3.rit.edu -> rit010n19 ETHER
Type=0800 (IP), size = 62 bytes
113987 9:36:50.78391 x009-066m-15n3.rit.edu -> rit010n19 IP
D=129.21.6.1 S=129.21.66.15 LEN=48, ID=40892, TOS=0x0, TTL=252
113987 9:36:50.78391 x009-066m-15n3.rit.edu -> rit010n19 ICMP Echo
reply (ID: 27552 Sequence number: 43572)
114640 9:36:59.41228 x009-066m-15n3.rit.edu -> rit010n19 ETHER
Type=0800 (IP), size = 90 bytes
114640 9:36:59.41228 x009-066m-15n3.rit.edu -> rit010n19 IP
D=129.21.6.1 S=129.21.66.15 LEN=76, ID=0, TOS=0xc0, TTL=252
114640 9:36:59.41228 x009-066m-15n3.rit.edu -> rit010n19 UDP D=123
S=123 LEN=56
114640 9:36:59.41228 x009-066m-15n3.rit.edu -> rit010n19 NTP client
(Mon Jan 24 09:36:59 2005)
114641 9:36:59.41289 rit010n19 -> x009-066m-15n3.rit.edu ETHER
Type=0800 (IP), size = 90 bytes
114641 9:36:59.41289 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=76, ID=40893, TOS=0x0, TTL=255
114641 9:36:59.41289 rit010n19 -> x009-066m-15n3.rit.edu UDP D=123
S=123 LEN=56
114641 9:36:59.41289 rit010n19 -> x009-066m-15n3.rit.edu NTP server
(Mon Jan 24 09:36:59 2005)
124052 9:38:3.41454 x009-066m-15n3.rit.edu -> rit010n19 ETHER Type=0800
(IP), size = 90 bytes
124052 9:38:3.41454 x009-066m-15n3.rit.edu -> rit010n19 IP
D=129.21.6.1 S=129.21.66.15 LEN=76, ID=0, TOS=0xc0, TTL=252
124052 9:38:3.41454 x009-066m-15n3.rit.edu -> rit010n19 UDP D=123 S=123
LEN=56
124052 9:38:3.41454 x009-066m-15n3.rit.edu -> rit010n19 NTP client
(Mon Jan 24 09:38:03 2005)
124053 9:38:3.41515 rit010n19 -> x009-066m-15n3.rit.edu ETHER Type=0800
(IP), size = 90 bytes
124053 9:38:3.41515 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=76, ID=40894, TOS=0x0, TTL=255
124053 9:38:3.41515 rit010n19 -> x009-066m-15n3.rit.edu UDP D=123 S=123
LEN=56
124053 9:38:3.41515 rit010n19 -> x009-066m-15n3.rit.edu NTP server
(Mon Jan 24 09:38:03 2005)
128960 9:38:50.79269 rit010n19 -> x009-066m-15n3.rit.edu ETHER
Type=0800 (IP), size = 62 bytes
128960 9:38:50.79269 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=48, ID=40895, TOS=0x0, TTL=255
128960 9:38:50.79269 rit010n19 -> x009-066m-15n3.rit.edu ICMP Echo
request (ID: 52560 Sequence number: 45139)
129209 9:38:53.79374 rit010n19 -> x009-066m-15n3.rit.edu ETHER
Type=0800 (IP), size = 62 bytes
129209 9:38:53.79374 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=48, ID=40896, TOS=0x0, TTL=255
129209 9:38:53.79374 rit010n19 -> x009-066m-15n3.rit.edu ICMP Echo
request (ID: 52561 Sequence number: 45172)
129547 9:38:56.79264 rit010n19 -> x009-066m-15n3.rit.edu ETHER
Type=0800 (IP), size = 62 bytes
129547 9:38:56.79264 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=48, ID=40897, TOS=0x0, TTL=255
129547 9:38:56.79264 rit010n19 -> x009-066m-15n3.rit.edu ICMP Echo
request (ID: 52562 Sequence number: 45226)
130559 9:39:7.41604 x009-066m-15n3.rit.edu -> rit010n19 ETHER Type=0800
(IP), size = 90 bytes
130559 9:39:7.41604 x009-066m-15n3.rit.edu -> rit010n19 IP
D=129.21.6.1 S=129.21.66.15 LEN=76, ID=0, TOS=0xc0, TTL=252
130559 9:39:7.41604 x009-066m-15n3.rit.edu -> rit010n19 UDP D=123 S=123
LEN=56
130559 9:39:7.41604 x009-066m-15n3.rit.edu -> rit010n19 NTP client
(Mon Jan 24 09:39:07 2005)
130560 9:39:7.41672 rit010n19 -> x009-066m-15n3.rit.edu ETHER Type=0800
(IP), size = 90 bytes
130560 9:39:7.41672 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=76, ID=40898, TOS=0x0, TTL=255
130560 9:39:7.41672 rit010n19 -> x009-066m-15n3.rit.edu UDP D=123 S=123
LEN=56
130560 9:39:7.41672 rit010n19 -> x009-066m-15n3.rit.edu NTP server
(Mon Jan 24 09:39:07 2005)
137427 9:40:11.42005 x009-066m-15n3.rit.edu -> rit010n19 ETHER
Type=0800 (IP), size = 90 bytes
137427 9:40:11.42005 x009-066m-15n3.rit.edu -> rit010n19 IP
D=129.21.6.1 S=129.21.66.15 LEN=76, ID=0, TOS=0xc0, TTL=252
137427 9:40:11.42005 x009-066m-15n3.rit.edu -> rit010n19 UDP D=123
S=123 LEN=56
137427 9:40:11.42005 x009-066m-15n3.rit.edu -> rit010n19 NTP client
(Mon Jan 24 09:40:11 2005)
137429 9:40:11.42087 rit010n19 -> x009-066m-15n3.rit.edu ETHER
Type=0800 (IP), size = 90 bytes
137429 9:40:11.42087 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=76, ID=40899, TOS=0x0, TTL=255
137429 9:40:11.42087 rit010n19 -> x009-066m-15n3.rit.edu UDP D=123
S=123 LEN=56
137429 9:40:11.42087 rit010n19 -> x009-066m-15n3.rit.edu NTP server
(Mon Jan 24 09:40:11 2005)
140956 9:40:50.79352 rit010n19 -> x009-066m-15n3.rit.edu ETHER
Type=0800 (IP), size = 62 bytes
140956 9:40:50.79352 rit010n19 -> x009-066m-15n3.rit.edu IP
D=129.21.66.15 S=129.21.6.1 LEN=48, ID=40900, TOS=0x0, TTL=255
140956 9:40:50.79352 rit010n19 -> x009-066m-15n3.rit.edu ICMP Echo
request (ID: 12128 Sequence number: 46721)
140957 9:40:50.79410 x009-066m-15n3.rit.edu -> rit010n19 ETHER
Type=0800 (IP), size = 62 bytes
140957 9:40:50.79410 x009-066m-15n3.rit.edu -> rit010n19 IP
D=129.21.6.1 S=129.21.66.15 LEN=48, ID=40900, TOS=0x0, TTL=252
140957 9:40:50.79410 x009-066m-15n3.rit.edu -> rit010n19 ICMP Echo
reply (ID: 12128 Sequence number: 46721)
Any suggestions would be appreciated.
Thanks,
Steve
smime.p7s
Description: S/MIME cryptographic signature
