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- About TheAlchemist
TheAlchemist
Getting noticed
Member since Jul 19, 2022
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33
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7
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2 weeks ago
I see repeatedly a "Single Device Packet Flood" event coming out of one Access Point. Could this event lead to a packet flood and disrupt uplink traffic to internet. BSSID ( hidden) bssid XX:XX:XX:XX:XX:XX dst FF:FF:FF:FF:FF:FF channel 6 state start alarm_id 27960 dos_count 1000 inter_arrival 10
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11-03-2022
04:37 PM
I think our MX appliance when running its algorithm for load balancing between WAN 1 and WAN 2 to decide which device uses which uplink connection is leading to a latency spike.
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11-03-2022
04:16 PM
oh yes, thanks. They are filling up the VM storage fairly quickly.
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10-23-2022
09:31 AM
@GIdenJoe I installed rsyslog on an ubuntu VM but seems like its giving info which could be found in Meraki dashboard Event log. I am using tail -f /var/log/syslog to see the event messages. your syslog extract has more details.
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10-23-2022
07:47 AM
4 Kudos
I actually removed below from the config file and logs are being received fine now. - $template remote-incoming-logs,"/var/log/%HOSTNAME%/%PROGRAMNAME%.log" *.* ?remote-incoming-logs
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10-23-2022
07:45 AM
I actually removed below from the config file and logs are being received fine now. - $template remote-incoming-logs,"/var/log/%HOSTNAME%/%PROGRAMNAME%.log" *.* ?remote-incoming-logs
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10-20-2022
01:49 PM
Attached image shows various other files/directories. Name of the server is syslog. Still unable to get any logs out of Meraki.
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10-20-2022
12:30 PM
@PhilipDAth Sorry for asking a rather Linux question than a Meraki one but unable to get any syslog info on the rsyslog server installed on ubunto server. Below are the details of the config file. I am trying to run commands like cat /var/ log /messages and tail -f /var/ log /messages to get logs from Meraki network. # /etc/rsyslog.conf Configuration file for rsyslog. # # For more information see # /usr/share/doc/rsyslog-doc/html/rsyslog_conf.html # # Default logging rules can be found in /etc/rsyslog.d/50-default.conf ################# #### MODULES #### ################# module(load="imuxsock") # provides support for local system logging module(load="immark") # provides --MARK-- message capability # provides UDP syslog reception module(load="imudp") input(type="imudp" port="514") # provides TCP syslog reception module(load="imtcp") input(type="imtcp" port="514") $template remote-incoming-logs,"/var/log/%HOSTNAME%/%PROGRAMNAME%.log" *.* ?remote-incoming-logs & ~ # provides kernel logging support and enable non-kernel klog messages module(load="imklog" permitnonkernelfacility="on") ########################### #### GLOBAL DIRECTIVES #### ########################### # # Use traditional timestamp format. # To enable high precision timestamps, comment out the following line. # $ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat # Filter duplicated messages $RepeatedMsgReduction on # # Set the default permissions for all log files. # $FileOwner syslog $FileGroup adm $FileCreateMode 0640 $DirCreateMode 0755 $Umask 0022 $PrivDropToUser syslog $PrivDropToGroup syslog # # Where to place spool and state files # $WorkDirectory /var/spool/rsyslog # # Include all config files in /etc/rsyslog.d/ # $IncludeConfig /etc/rsyslog.d/*.conf
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10-16-2022
12:26 PM
So, on Uplink Latency page of MX 250 if destination is a google DNS server i.e 8.8.8.8 and we see latency spike on both carriers, is it due ICMP packets unable to hit DNS server?
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10-13-2022
11:51 AM
Definitely, will setup port mirroring on MS switch and run pcap captures continuously.
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10-08-2022
07:53 AM
2 Kudos
Thanks much for your thoughts and information. Yes, I do not see a way yet of confirming which device would be using which Uplink WAN connection with load balancing enabled. Would be handy to know though.
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10-07-2022
02:19 PM
Hello, Is there a way to know which client/device on a Meraki network is using which uplink i.e. WAN 1 or WAN 2 other than in traffic shaping where you can put a WAN connection as a preferred network. Thanks
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10-04-2022
10:29 AM
1 Kudo
Thank you very much team Meraki.
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09-25-2022
11:27 AM
Hello, Why would I notice no latency spike or change but a loss of around a minute of1.5 ms and also 3.5 ms.
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Firewall
09-11-2022
11:57 AM
@ewcs our setup does not have Advanced Security License so cannot see this Threat Protection>Intrusion detection and prevention but still get these latency spikes time to time on both ISPs at the same time. Definitely a Meraki issue rather than ISPs.
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09-09-2022
01:47 PM
@finzwake we are running on version 16 as well. But, have not done a reboot in a while. CPU utilization has been been below 50% even during high upstream traffic.
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09-08-2022
04:07 PM
@PhilipDAth it is not web browsing traffic but media streaming traffic based of UDP and with every latency spike of even around 5 ms or more, a hit is taken.
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09-08-2022
03:05 PM
@cmr yes, we have enterprise license with 4 Gb/s throughput, so ok at that end. Also, most of our VPN traffic has been less than 10 mbps. So, for some reason, latency spikes are hard to understand.
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09-08-2022
01:50 PM
@cmr We are not using Advanced features so have 4 Gb/s of throughput available for Uplink traffic. Also, isn't the VPN traffic also added up in the Uplink traffic ? I thought all traffic (including VPN) shows up as uplink traffic which for is is around 1.5 Gb/s.
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09-08-2022
12:14 PM
Active-Active Auto VPN is On and load balancing enabled. VPN traffic is for control of some devices but we see hits on all our video streams traffic both downstream and upstream via internet.
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09-08-2022
10:03 AM
Hello, Have two ISP connections to an MX250 as WAN 1 and WAN 2 in a load balanced mode. Time to time latency spikes are noticed on both the ISPs at the same time. Checked with ISPs and both report stable, low latency internet connection. So, why would such latency spikes show up intermittently. Could a sudden burst of high uplink traffic lead to such latency spikes ? Uplink is mostly around 1.5 Gbps on a 4 Gbps internet connection. Thanks,
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08-28-2022
10:06 AM
Based on below article in Meraki documentation, I could assign any DSCP value in any Queue and what percentage of bandwidth is assigned to that traffic in that Queue depends on the CoS queue value chosen. i.e. CoS value 5 will have the maximum weightage and most percentage of bandwidth assigned. Then what does it matter if a DSCP value of 31,36 or 41 or any other number is chosen. https://documentation.meraki.com/MS/Other_Topics/MS_Switch_Quality_of_Service_Defined
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08-27-2022
03:44 PM
Hello, Apart from Appliance Status> Uplink >Historical device data stat, is there any other place where I could see and/or download bandwidth usage stats for Wan uplink traffic. Thanks.
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08-26-2022
12:31 PM
Actually, Mx was showing Wan 1 as Public IP and MS switch was showing Wan 2 as Public IP. Power cycled switch and its all good. Both Mx and Ms devices show Wan 1 as Uplink ip. Thanks
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08-26-2022
12:02 PM
Even after turning off Active-Active Auto VPN ,Mx appliance shows Wan 1 as Public IP but the Switch connected to Mx shows Wan 2 as Public IP.
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