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.

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How to fix Image Swapping Issue in iOS 8 with keep-alive + HTTP Pipe-lining?

Ever since iOS8, the sites I managed are experiencing an intermittent problem in which images are swapping locations with other images. This has been mentioned in a number of places, but with no ...
0
votes
1answer
30 views

c7200 IOS 15.x-x NAT/PAT issue

My problem may be just finger trouble, but after fighting with this for a day on what should have taken 5mins, I am getting fustrated. I am not Cisco Certified at any level, just a fair amount of ...
3
votes
2answers
833 views

Cannot ping outside Fa4 on cisco 871w Router (SoHo)

After starting fresh after a write erase and a reload on a cisco 871w. I cannot ping outside of the wan (fa4). I gave vlan1 (default) an ip because apparently the built in "4 port switch" is a layer ...
1
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0answers
27 views

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 ...
1
vote
1answer
75 views

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 ...
1
vote
1answer
68 views

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 ...
0
votes
1answer
1k views

Cisco - Port's configured trust state is now operational

I am looking at a Cisco switch's log at work and am a bit confused by how verbose it can be at times. For instance, we use automatic QoS here and I often see this when phones are plugged: Mar 18 ...
1
vote
1answer
1k views

Certificate 'not verified' when doing 802.x1 authentication on Apple ios

I've setup a new wifi network including a Freeradius server. Everything works fine except that Apple iOS gives a 'certificate not verified' warning when connecting. When the user accept the ...
1
vote
1answer
74 views

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 ...
1
vote
1answer
2k views

How to setup a static multicast ARP entry with Cisco SG300?

We're running a Microsoft NLB cluster in multicast mode as a loadbalancer. Using our old Cisco IOS switches we propagate access to the cluster to our branches using a static ARP entry in the core ...
0
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0answers
96 views

How to setup Cisco IOS with multi public IP's

I'd like to set up a little network environment. We have bought 2 different subnet from our ISP. The WAN internet connection : xx.yy.81.61/26 WAN gateway: xx.yy.81.1 First subnet : xx.yy.81.80/30 ...
0
votes
1answer
879 views

Cisco IOS Router and Azure VPN - tunnel established, but traffic is not flowing

I am trying to connect a Cisco IOS router to Azure via the IPSec VPN. I have used the Cisco ISR template to establish a tunnel from my router to Azure. In the Azure control panel, I can see that the ...
0
votes
1answer
23 views

Temporarily reduce Cisco trust level

I'm a new network admin and I'm looking through the various config files we have in our routers/switches/asa. I'm wondering if there is a way to lower trust level that my login has from 15 to ...
0
votes
3answers
2k views

Cisco 881 throughput/bandwidth issue

We have a dedicated 30Mb connection (up/down) from our ISP, but we can only seem to get 10Mb (up/down) from the router. Does anyone know what we're missing, or how we can tweak the settings on this ...
0
votes
0answers
26 views

NAT and DMZ Cisco ASR 1001

OHAI got weird situation on my two Cisco ASR 1001. First one is WAN router, the other one is CORE distribution inside the office. So I've got one public IP on my WAN, and got this particular line: ...
5
votes
2answers
119 views

How can I automate the deployment of cisco IOS upgrades?

I was googling this and didn't turn up anything. If you have 100 some odd Cisco routers and switches how do you push out new IOS releases? Certain not by manually logging into every device. The only ...
3
votes
3answers
133 views

Show code for specific block in cisco IOS conf mode?

I work with Fortigate gear a lot and in the CLI it's possible to navigate to a node (say config system global then type in show and it will show me the configuration from that block. In IOS I can't ...
0
votes
1answer
82 views

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). ...
0
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0answers
33 views

iOS intermittent page load problems apache 2.4 / mod_pagespeed

Recently updated to CentOS 7 and Apache 2.4.6, using PHP 5.4 and various other extensions from the remi repository. Currently experiencing weird intermittent problems, mostly with iOS. Hooking up to ...
-4
votes
2answers
64 views

Cisco 2801 - ACL example to prevent certain users in same subnet from accessing certain devices [closed]

May be a simple answer, but does anyone have an example of an ACL that would prevent certain users (preferably based on MAC address, so that I can not have to deal with static DHCP addressing) from ...
0
votes
1answer
4k views

How to delete multiple files from a Cisco router flash memory

I have filled up my router's flash with voice files and folders and wanted to remove them. I there a script that can delete all files in flash except for the IOS image?
-1
votes
1answer
257 views

Can 'show mac address-table' be used inside user mode? [closed]

I've been studying for my CCNA exams using Cisco ICND1 Official Cert Guide, Wendell Odom. On one question they ask in which modes show mac address-table can be executed. The answer is User mode and ...
0
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1answer
47 views

Is there a Cisco IOS command for finding out the serial number of a switch / router?

I am doing an inventory of all of our switches and I was wondering if there's a Cisco IOS command that will return the serial number for a switch and router? Thanks in advance!
0
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0answers
24 views

Cisco IOS AAA “TACACS unavailable” login message

A while ago I had to configure some routers to use TACACS+ as well as local authentication. I know the usual AAA config for TACACS+ with local fallback. What I can't remember is how I got it to ...
0
votes
3answers
1k views

Configure hairpinning on Cisco 871 IOS 12.4(15)T4?

I'm a newbie to IOS. In the past I've used consumer routers which seem to have the smarts to automatically route requests to internal hosts addressed by their public name back to the internal network. ...
0
votes
1answer
49 views

Filter OSPF routes redistributed by BGP

I am redistributing OSPF routes inside a network, through BGP. However I don't want to redistribute all the advertised routes from OSPF (specificaly the private networks) to the outside of the AS. How ...
1
vote
0answers
40 views

How can one determine what Kerberos key encryption algorithms are supported on a Cisco IOS device?

When attempting to load an SRVTAB over TFTP, I receive an "Unsupported keytype" error: abc(config)#kerberos srvtab remote 1.2.3.4 abc.srvtab Loading abc.srvtab from 1.2.3.4 (via Vlan123): ! [OK - 121 ...
3
votes
1answer
117 views

SMTP errors with iOS devices

I'm trying to diagnose why when an iOS device like an iPhone or iPad is set up to use email with our server for the first time, these errors occur. We choose "Other" from the initial set of choices ...
8
votes
4answers
200 views

Prevent end-users from purchasing apps on iOS

We are looking to deploy iPads from inside our organization. We want to be able to install apps for users, which can be done via Mobile Device Management. However, we do not want users to be able to ...
0
votes
1answer
308 views

Cisco IOS: Logging only debug messages on command-line

I want to have a quiet command-line such as (config)# no logging console causes. Still, I want to make use of # debug commands. It appears to me that # debug depends on syslog level 7. So I cannot ...
3
votes
1answer
56 views

Logging commands on cisco devices

I'm searching for a way to log every command executed on a cisco switch/router, I have a catalyst 2960s with lanbase image, and a catalyst 4500e with ipbase image. I've found a way to log commands ...
1
vote
2answers
357 views

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 = ...
0
votes
4answers
463 views

Cisco IOS: Show incoming Telnet sessions

According to show ? the show sessions command is supposed to show Information about Telnet connections. Although I'm connected, the sessions does not show up. Both devices run Cisco IOS. How can I ...
1
vote
0answers
91 views

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 ...
0
votes
1answer
71 views

How to type a £ symbol over console with Cisco IOS?

I've noticed that I'm unable to type a UK-pound symbol (£) over the serial console using Cisco IOS 12.2. The symbol instead is interpreted as a hash (#). If I open the Windows character map and ...
0
votes
1answer
587 views

Cisco 887VA Port Forwarding Not Working

I have a Cisco 887VA connected to our BT Business Broadband line. We also have another modem on a seperate connection which also handles our DHCP. The Cisco is plugged into our network switch, as is ...
0
votes
2answers
207 views

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 ...
0
votes
0answers
92 views

WSO2EMM (MDM) Profile Installation Failed - Certificate is invalid

I followed the documentation (https://docs.wso2.com/display/EMM110/General+Server+Configurations) to generate the certificate and depoly the iOS agent but when I try to setup the certificate I have ...
2
votes
1answer
371 views

How can an iPad be unsupervised, if the configurator Mac which supervised it is lost?

When supervising iPad 4 devices running IOS8 using Apple Configurator. What happens if the Mac running Apple Configurator blows up and the backups are lost? I understand that iPads can only be ...
2
votes
2answers
2k views

cisco router loses configuration on reload even after saving it

I'm configuring a Cisco 3640 and it's not saving simple things like my hostname. I've tried with 'wr' and 'copy running-config startup-config'. Also erased the configuration but no luck. There's no ...
1
vote
1answer
219 views

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 ...
0
votes
0answers
48 views

How to fix stalled connection on large download

I have a cisco 1921 router performing routing and NAT function. Cisco 3750 is performing layer 3 core switching duties. Users are complaining about large file transfers being stalled (not dropped) ...
0
votes
0answers
348 views

Unable to communicate with web proxy server on iOS

I am following the instructions on how to use a HTTP proxy with an iPhone, however I appear unable to communicate with the HTTP proxy. I have configured the settings in my phone correctly to use the ...
0
votes
1answer
147 views

Putty: disable configuration of server terminal length

I would like to prevent Putty from setting the server terminal length so as to avoid the dreaded --More-- prompt in Cisco IOS. Please do not tell me to set length 0 in line config mode because this ...
1
vote
0answers
308 views

Trying to change a custom VPN port back to the original on Fortigate 40C

We recently changed our firewall and bought a Fortigate 40C device. We wanted to use our old VPN settings. The Fortigate support technician told us that this model was new and he didn't know it in ...
3
votes
2answers
435 views

Delay NTP Initialisation, Cisco 877W, IOS 12.4(24)T1

I have a Cisco 877W which I'm using for my home ADSL connection (and as a refresher in Cisco IOS). I've got a working config in-place with my PPPoA connection coming online correctly, and VLANs and ...
0
votes
0answers
156 views

C3600 Vlan's convert from IOS V 12.4 to 15.2

I need some help to get vlan's to get working again. I have a c2500 with v12.4 that works with the config above, now with a new c3600 with the same config but with v15.2 I can't put vlan's working. ...
0
votes
0answers
162 views

SSL Client Certificates on Mobile

Has anyone gotten mobile devices to use client SSL certs with nginx? I have configured a private Certificate Authority and I'm using an intermediate cert to sign client certificates. Clients ...
0
votes
1answer
71 views

Cisco IOS Show | Filter | redirect

I am new to Cisco IOS and I have one question that I have come across. Please reference this thread. Reference The answer to that thread states that in Cisco IOS you can run a command, filter it down ...
2
votes
1answer
226 views

Cisco 7604 router runs out of memory when loading the IOS image, yet runs a different image with similar reqs

I am experiencing an unusual memory issue with a Cisco 7604 router, specifically the memory on the Supervisor Engine (SUP32-GE-3B) and how it pertains to IOS requirements. I was preparing the router ...