About jmcgrady1

jmcgrady1 · 05-29-2025

I have a catalyst 9300 switch running 17.12.04. When NTP is configured, it can see its two sources. But it incorrectly lists them as being stratum 16. eg; #sh ntp assoc address ref clock st when poll reach delay offset disp~10.70.240.40 .TIME. 16 - ...

jmcgrady1 · 05-01-2025

I have a topology that will look like: san1 - switch1 - switch2 - san2. The SANs are HPE Alletra using FC. The Alletra requires its san to san replication ports (RCFC) to use a different zone from its host to SAN ports. That seems straightforward. ...

jmcgrady1 · 04-15-2025

I have 2 ISR 4431 configured to establish an L2TP tunnel over ipsec through my internal network. The aim is to stretch a vlan so it is accessible from a remote location. Here is the topology Client (2.2.2.9/24) -- (2.2.2.2/24)router(3.3.3.1/24) --...

jmcgrady1 · 03-27-2025

I have need to present a given single vlan on two C9300 switches separated by a layer 3 network. The presentation should be bidirectional and transparent. What would be the best kind of vpn setup to use?

user auth without user cert? · 04-23-2024

We have a chicken & egg situation where ISE requires a user's login and the presence of a user cert from AD before the user can be permitted to connect to the corporate wifi. But the user needs to connect to wifi to get the cert. One solution i have ...

jmcgrady1 · 05-29-2025

This thread gave the solution: Solved: Clock is unsynchronized, stratum 16, no reference clock - Cisco Community Issue was the switch is communicating through an out of band interface using vrf vrf-mgmt. I needed to factor that into the ntp config.

jmcgrady1 · 05-29-2025

Further to OP: address ref clock st when poll reach delay offset disp~172.16.143.252 .TIME. 16 - 64 0 0.000 0.000 15937.~172.16.143.253 .TIME. 16 - 64 0 0.000 0.000 15937. Its curious that your time sources are listed as stratum 16. Is that correct? ...

jmcgrady1 · 05-06-2025

i am wanting to extend the fabric across 2 switches in separate locations. I have since been told i must set the trunk port to 'switchport mode E'

jmcgrady1 · 10-24-2024

When the c9300 first came out, i was disappointed to learn that a firmware update takes down the whole stack. Other vendors do individual updates of stack members, whilst keeping the stack alive, with ease. I had hoped that there would be a reliable ...

Re: user auth without user cert? · 04-23-2024

Indeed the machine cert is available. However the customer is requiring that an individual user cert be present before a client can be permitted to connect to the corporate wifi proper.

Member Since	‎06-10-2018 10:05 PM
Date Last Visited	‎05-22-2025 11:04 PM
Posts	113
Total Helpful Votes Received	37

User Statistics

User Activity

NTP Stratum incorrect

trunking between 2 switches and transporting vsan

L2TP routing question

tunnelling layer 2 across a layer 3 network

user auth without user cert?

Re: NTP Stratum incorrect

Re: Ntp Clock is unsynchronized in 3850

Re: trunking between 2 switches and transporting vsan

Re: Catalyst 9300 Stack Automatic Firmware Update

Re: user auth without user cert?