Peter,
Thanks for the quick response. We can see a
successful SNMP via UDP from Smokeping to the router's Loopback. However,
all of our configs are done to use the Interface IP and that is what is sending
TCP to this 1 specific router. All other routers successfully go with
UDP.
Here is an example of our config:
*** General ***
owner = Network Management
Services
contact = SmokepingAdministrator <at> company.com
mailhost
= mail.host.com
sendmail = /usr/lib/sendmail
imgcache =
/usr/local/smokeping/cache
imgurl = cache
datadir =
/opt/ens/smoke/data
piddir = /opt/ens/smoke/var
cgiurl =
http://host.name.com/smokeping.cgi
smokemail
= /usr/local/smokeping/etc/smokemail
tmail =
/usr/local/smokeping/etc/tmail
# specify this to get syslog
logging
syslogfacility = local0
# each probe is now run in its own
process
# disable this to revert to the old behaviour
# concurrentprobes =
no
+someloss
type = loss
# in percent
pattern =
>0%,*12*,>0%,*12*,>0%
comment = loss 3 times in a
row
*** Database ***
step =
300
pings = 20
# consfn mrhb steps total
AVERAGE 0.5 1 1008
AVERAGE
0.5 12 4320
MIN 0.5 12
4320
MAX 0.5 12 4320
AVERAGE
0.5 144 720
MAX 0.5 144
720
*** Presentation ***
template =
/usr/local/smokeping/htdocs/basepage.html
+ charts
menu = Charts
title = The most interesting
destinations
++ stddev
sorter = StdDev(entries=>4)
title = Top
Standard Deviation
menu = Std Deviation
format = Stdandard Deviation
%f
++ max
sorter = Max(entries=>5)
title = Top Max
Roundtrip Time
menu = by Max
format = Max Roundtrip Time %f
seconds
++ loss
sorter = Loss(entries=>5)
title = Top
Packet Loss
menu = Loss
format = Packets Lost %f
++ median
sorter = Median(entries=>5)
title = Top
Median Roundtrip Time
menu = by Median
format = Median RTT %f
seconds
+ overview
width = 600
height = 50
range =
10h
+ detail
width = 600
height =
200
unison_tolerance = 2
"Last 3 Hours"
3h
"Last 30 Hours" 30h
"Last 10 Days"
10d
"Last 30 Days" 30d
"Last 400 Days"
400d
*** Probes ***
+CiscoRTTMonEchoICMP
forks = 32
offset = 50%
step =
300
timeout = 15
# The following variables can be
overridden in each target section
ioshost = C
ommunityString <at> HomeRouter_FQDN #
mandatory
# iosint = 10.33.22.11
packetsize = 56
pings = 5
# tos =
160
# vrf = INTERNET
+ FPing
binary =
/usr/local/fping/fping
*** Slaves
***
secrets=/usr/local/smokeping/etc/smokeping_secrets
+boomer
display_name=boomer
color=0000ff
+slave2
display_name=boomer
color=0000ff
*** Targets ***
probe = FPing
menu = Top
title = Network Latency
Grapher
remark = Welcome to the SmokePing website for company name.
\
Here you will learn all
about the latency of our network.
+ VPN
menu = VPN Links #
title
= VPN Links #
++
WINNAME
menu = WINNAME HomeSite to RemoteSite#
title = WINNAME
HomeRouter to RemoteRouter #
probe = CiscoRTTMonEchoICMP #
host =
RemoteInterfaceIP # RemoteRouter
Dean
Schaibley
That probe uses the Net::SNMP module to manage SNMP queries.
IIRC, Net::SNMP defaults to using UDP, however it will switch to TCP if it can't
reach the host via UDP.
Can you confirm whether you can reach the router
with UDP from the server hosting Smokeping by using other SNMP tools (e.g.
snmpwalk, etc)?
- Peter
Schaibley Dean wrote:
Need some help here. Is there a way
to Force SNMP to use TCP 161 or UDP 161? Most all of our smokeping
traffic is using UDP 161, but somehow, we do have some that is using TCP 161
(not sure how/why).
Our firewalls are only config'd for
allowing UDP 161, so when the Smokeping process tries to use TCP it is failing
at the firewall (and Security won't allow TCP without
justification).
We are running Smokeping 2.3.6 with the
CiscoRTTMonEchoICMP as the Probe.
Any help/tips would be greatly
appreciated.
Dean
Schaibley
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