About John N

John N · 04-12-2024

I have been instructed to delete any weak MD5 or 96-bit MAC algorithms on all my switches. My current setup I have the following:hmac-sha2-256hmac-sha2-512 hmac-sha1hmac-sha1-96 Out of these which would be considered to be weak MAC algorithm?

John N · 03-20-2024

I have 8 Cisco 3850s that I need to change the default VLAN 1 (where the IP and mgmt reside) to another VLAN. I did this on a dummy switch and as soon as I delete VLAN 1 IP info I lost all connectivity. My question is if I create another VLAN and m...

John N · 03-18-2024

I have a less then a dozen Cisco 3850 switches that I am working on. I need to configure 802.1x authentication. The issue is the switches are reaching out to Cisco ACS and I need to set up radius server to enable 802.1x. The Cisco ACS I found out ...

John N · 11-15-2023

I am trying to enable SSH on a C3800 router. I did the following:Cisco Catalyst 8300 and Catalyst 8200 Series Edge Platforms Software Configuration Guide - Using Cisco IOS XE Software [Cisco Catalyst 8300 Series Edge Platforms] - CiscoPlease see the...

John N · 11-13-2023

I was upgrading a C3850 48 port switch and all was well until I believe I might have deleted the cat3k_caa-stdriver.16.12.09.SPA.pkg. while trying to the delete the old file with the same name in flash. The switch failed and is currently looping. I...

John N · 04-15-2024

Just following up... is there a way to find the GUI link via within the ACS command line?

John N · 04-15-2024

So very interesting thing.... If anyone has this vulnerability, I hope this helps...If you delete hmac-sha1-96 the vulnerability goes away. The hmac-sha1 can stay. Thanks for the help.

John N · 03-28-2024

Just to follow up .... I am able to access the CLI for ACS but I am unable to access the GUI... is there a way I could find what the URL for the GUI is via the CLI? I have the username and password but no GUI.... Any assistance would be appreciated.

John N · 03-20-2024

Thanks. The first time I try to do it I did SSH in and that's where I lost connectivity. So, your saying create an SVI within the same subnet as the IP (for instance if the last 2 octets are currently 0.1 I should create 0.2)? If connectivity is fi...

John N · 03-20-2024

So I am dealing with the same issue. So if I create as you created interface vlan 10 - add ip and subnet - name it - Am I doing this while VLAN 1 still has the same IP assigned to it? Or at the same time and when testing if VLAN 10 works I shutdown...

Member Since	‎04-13-2023 02:12 PM
Date Last Visited	‎04-16-2024 08:29 AM
Posts	29
Total Helpful Votes Received	2

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User Activity

Deleting MD5 or 96-bit MAC algorthms

Changing default VLAN used for MGMT to a different VLAN

Cisco ACS - 802.1x Radius Issue

Enabling SSH on a C8300 Router

Upgrade a C3800 switch issue

Re: Cisco ACS - 802.1x Radius Issue

Re: Deleting MD5 or 96-bit MAC algorthms

Re: Cisco ACS - 802.1x Radius Issue

Re: Changing default VLAN used for MGMT to a different VLAN

Re: OK I have got to point out a