About Matthew Martin

Matthew Martin · 12-18-2024

Hello All,A few months back I noticed my WSL Linux was requiring me to add this "ssh -o RequiredRSASize=1024 user@ipaddr" to some hosts that I ssh to, this included a few servers and some Cisco gear.I'm guessing my WSL had some update or openssh was ...

Matthew Martin · 10-18-2024

I was on our ISR4551-X and I noticed the ACL we use for securing the VTY lines wasn't being applied on "line vty 0 4"... #sho ver | inc IOS Cisco IOS XE Software, Version 16.12.07 Cisco IOS Software [Gibraltar], ISR Software (X86_64_LINUX_IOSD-UNIVER...

Matthew Martin · 09-03-2024

Hello All,In one of our locations we are running the following switch stack as shown below. We would like to remove one of the switches from the stack. I was originally thinking this was going to be a fairly simple process without causing any downtim...

Matthew Martin · 08-27-2024

Hello All,Not sure when this started as I noticed it today while looking at our ISE LiveLogs. I started seeing a whole bunch of failed auths coming through and noticed they were all coming in on the same switchport.The switch is a WS-C4510R+E, runnin...

Matthew Martin · 06-27-2024

Hello All,A little background... We are replacing most of our internal switching for a 3rd party company who is going to be managing our LAN switching and Wi-Fi. But we still want to use ISE as the RADIUS server. They gave us 2 x 48-port switches and...

Matthew Martin · 12-18-2024

Thanks Rob!Got the new key generated and assigned to ssh. All is well now!4451X-HQ1#show ip ssh SSH Enabled - version 2.0 Authentication methods:publickey,keyboard-interactive,password ............... cut............. ............... Authentication t...

Matthew Martin · 10-18-2024

Yes, there VTY lines 5 15 already had the ACL applied. But it wasn't until applied to 0 4 when the issue started.Jonatan, yes... Looks like the management interface we're using has "vrf forwarding Mgmt-intf" configured on it.While writing this I adde...

Matthew Martin · 09-04-2024

So I'm pretty sure I understand the process of removing a switch from the stack now. Thanks all who replied!One other thing I'm curious about that I didn't see in any links I found. Once the switch is removed and the stack reloads and comes back up. ...

Matthew Martin · 09-04-2024

Thanks for the reply. What does pressing the mode button do on the Switch? Just curious, I always thought the mode button just shows you different status lights when you click through the modes... Maybe the 9200 is different? I'm not on location ther...

Matthew Martin · 09-04-2024

Hey, thanks for the reply.Ahh ok. If if I understand correctly, then Switch 1, Switch 2 & Switch 3 are able to be determined by the port numbers, i.e. Gi 1/0/xx, 2/0/xx, 3/0/xx. If that's correct, then I know that the switch I want to remove is the o...

Member Since	‎03-30-2011 12:34 PM
Date Last Visited	‎12-25-2024 02:57 PM
Posts	861
Total Helpful Votes Received	125

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SSH to ISR Requires Key Size of 1024?

ACL on VTY Line Blocks All Connections

Removing a Switch from a Stack

Phantom Authentication Sessions Appearing on a Switchport

NAS Device Type Issue - Guest Wi-Fi

Re: SSH to ISR Requires Key Size of 1024?

Re: ACL on VTY Line Blocks All Connections

Re: Removing a Switch from a Stack

Re: Removing a Switch from a Stack

Re: Removing a Switch from a Stack