About joelm

joelm · 08-24-2020

I have a UCS-EN140N-M2 in an ISR4451 router (running Cisco IOS XE Software, Version 16.08.01) with this configuration:router#show platform Chassis type: ISR4451-X/K9 Slot Type State Insert time (ago) --------- ---...

joelm · 06-20-2020

joelm · 06-15-2020

I have an ISR4451 router (running version 16.8.1) with an SM-X-ES3D-48-P card in it, which is a card version of the C3560E switch (running version 15.2(3)E1). Several of the hosts on the switch are serving NTP traffic, which are 60-100 byte UDP pack...

joelm · 06-07-2020

I have an ISR4451 running version 16.08.01 (Fuji). When I SSH into it, I am logged out after an hour of inactivity. Here is the relevant information from the config file:% ssh router; date # SSH into the router and when the session ends, prin...

joelm · 06-01-2020

I have a two-port router and external switch. One router interface is configured with the WAN information. The other interface has the LAN information, including dot1Q VLANs, and some firewall rules. Plug the LAN-side cable into a switch, configure ...

joelm · 09-30-2020

Run this command on the switch module:switch1#show processes cpu sorted 5sec CPU utilization for five seconds: 61%/0%; one minute: 62%; five minutes: 62% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 171 1706026751 101...

joelm · 09-26-2020

Turns out the real answer to the high CPU utilization on the switch is is a known bug in my version of IOS.Blinky lights are great for movies; sometimes not so good for computers.

joelm · 09-26-2020

A lot of people are successfully using a Raspberry Pi as a Stratum 1 NTP server. Granted, this solution isn't enterprise grade, and can't handle a huge load (it can probably handle a couple of hundred clients), but for about $50-60 US dollars, its h...

joelm · 09-25-2020

NTP will automatically vary its polling time based on how well your device is doing relative to the time source(s). The polling interval can be as short as 64 seconds and as long as 1024 seconds. The way to tell is to look at the value of poll in t...

joelm · 09-02-2020

You can have as many NTP servers as you want (up to about 15? or so). NTP will poll all of them and figure out the best source of time.Here's my configuration:switch#show run | incl ntp ntp server 98.191.213.2 ntp server 98.191.213.7ntp server 98.191...

Member Since	‎10-12-2017 02:51 PM
Date Last Visited	‎12-01-2020 07:27 AM
Posts	27
Total Helpful Votes Received	40

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Configuring an UCS-EN140N-M2 in a ISR4451 router

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