The operating system used on the majority of Cisco's routers and switches; a package of routing, switching, internetworking and telecommunications functions tightly integrated with a multitasking operating system. For Apple's mobile device OS, use apple-ios.
Questions tagged [ios]
309 questions
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Cisco Router: ran 'no enable password'; 'enable' still asks for a password
I have a Cisco router (it's hard to access physically so I can't tell you the model) being used as a NAT without a firewall (inside the network in such a way that that does not pose a security thread) and not as a gateway at all. I configure it by…
Scruffy
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2 answers
setting up default-gateway on a router
So I've got this weird assignment, where each branch office has to be able to access the main office (and Internet) through a serial connection.
Since switches don't have a serial connections socket, I am using routers. I also use them for…
Mike94
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Cisco IOS - terminate a process (kill a process)
How do I terminate a process similarly to kill -9 $PID?
I would like to do the same as GNU/Linux offers: For example, a shell is running a Telnet session to a router, but later that router is powered off. Consequently, the shell is unusable. All I…
user2964971
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Why can't I enable SSHv2 on my Cisco 3750X?
It seemed simple enough: use ip ssh version 2.
This was the result:
3750xCoreStack(config)#ip ssh version 2
Please create RSA keys to enable SSH (and of atleast 768 bits for SSH v2).
3750xCoreStack(config)#cry key gen rsa
% You already have RSA…
atroon
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ssh into Cisco router not working
On a 2800 series router, I used to be able to ssh in via two public interfaces, but now I can't seem to. One of these two public interfaces has an ACL, the other currently doesn't. When I ssh to the one with the ACL, I do see the counter go up on…
Kyle Brandt
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Cisco Catalyst 2960S boots to "MLG System"
We have a brand new Cisco Catalyst 2960S that while connected to the console during boot is booting to the following:
File "flash:/c2960s-universalk9-mz.122-53.SE2/c2960s-universalk9-mz.122-53.SE2.bin" uncompressed and installed, entry point:…
sardean
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Access Server 2008R2 RemoteApp with MS iOS RDP App without RD Web Access
Is it possible to connect to a Server 2008 R2 RemoteApp using the iOS Microsoft Remote Desktop App v8.0.9, across LAN and VPN, with only the RD Session Host service installed? That is, without RD Web Access, RD Gateway and RD Connection Broker? …
John Wilson
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How can I solve DNS delay on iOS over VPN
When connecting iOS devices to our Sonicwall VPN (L2TP) it takes about 30 seconds before any internal servers can be contacted. It appears to be purely a DNS problem because they can be contacted via IP address. This issue does not exist on Mac or…
Brian
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How can I use SSH to run Cisco IOS commands in Global config mode?
I know about Kron, but there is supposedly no way to run global config commands:
http://www.techrepublic.com/article/schedule-commands-with-cisco-ios-kron/
If I connect using Putty, Putty is able to run several commands after login and that works…
Jose Mendez
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VLAN routing to internet
I am currently setting up a new network and wanted to make sure it is being done in the best way as this is my first time working on a NetVanta 1234P and I am having issues with routing
The client I am setting up for is a building with 100 different…
nGX
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Cisco IOS - Stuck in Read Only Mode
I can't figure out what happened but I can not enable privileged mode in my Cisco 3750.
At first, I tried:
enable
to enter EXEC mode. My password would not work and it kicked me out after 3 retries.
Did some troubleshooting and happened to…
Kev
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3750s not logging mac address changes?
I have enabled mac address change logging on my Cisco 3750s but I'm not getting any results.
What am I missing? I've moved hardware a couple times and set up a couple new VMs with totally new MAC addresses.
logging trap debugging
logging…
Tim Brigham
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Does Removing a WIC from a Cisco router ever effect the Saved Configuration?
If I:
Shutdown a Cisco Router
Remove a WIC and put in a new one of a different type.
Boot the router and configure the new WIC just to test it, and don't 'copy run start'
Shutdown the router and put the old WIC back
Start it up again
Will…
Kyle Brandt
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Name resolution failing on Cisco 800 Series
Our ISP is currently in the middle of a major DNS outage and as a result name resolution through the nameservers they provide is not working. I'm trying to add Google DNS servers to our Cisco 800 Series as an interim solution but DNS still doesn't…
Taz
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Cisco IOS: Prevent Inter-VLAN IPv6 Network Solicitation messages
I have a Cisco 3825 router that (among other things) functions as a gateway to the internet. I have two VLANS, but only one of them should have access to the internet.
VLAN10: network = x:y:z:10::/64 (NO internet access)
VLAN20: network =…
Terje Mikal
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