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
11
votes
3 answers
How to configure IIS 7.5 SSL \ TLS to work with iOS 9 ATS
Problem: Our mobile app can no longer establish a secure connection to our web-service since iOS 9 now uses ATS.
Background: iOS 9 introduces App Transport Security
Server Setup: Windows Server 2008 R2 SP1 (VM) IIS 7.5, SSL certs from digicert.…
RobDigital
- 283
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10
votes
2 answers
How to safely install a new IOS image on a Cisco device when the installed flash memory size isn't enough for two of them?
Today I was updating IOS on a Cisco 877 router, and a problem came up: the installed flash memory wasn't enough to hold both the old and the new IOS images, so the new one couldn't be uploaded unless the old one was deleted first.
This of course…
Massimo
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10
votes
1 answer
IOS QOS service policy pass-through on a tunnel interface
I have some SIP phones on one network that go through an IPIP tunnel to get to the server.
I've setup QOS rules to watch for appropriate VOIP traffic as follows:
class-map match-any class-voice
description Voice
match dscp af11
match dscp…
MikeyB
- 38,725
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10
votes
3 answers
Why is my router CPU at 40% when no processes use more than 2%?
I have a problem, I have a Cisco 1841 running Cisco IOS 15, and I get strange behavior. The CPU usage is shown as 40%, but there is no processes that is using this much CPU power.
Here is an example:
lev1841#show processes cpu sorted
CPU…
Kedare
- 1,766
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9
votes
4 answers
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 apparent…
David
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9
votes
3 answers
How to obtain Cisco IOS firmware?
Quick and simple question, but I've not been able to find an answer around.
I have a Cisco ADSL router (model 877).
I don't have any Cisco support contract.
How can I obtain an updated firmware for it?
I know which firmware I want, and it's a minor…
Massimo
- 68,714
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9
votes
1 answer
Simple Multicast Design
In order to support desktop imaging requirements I need to correct the multicast design on an existing network, but am not well versed in this subject. The diagram below gives a basic example of the topology. The Juniper EX8200 is the hub in a…
SpacemanSpiff
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7
votes
2 answers
Nginx HTTP2 IOS 11 not working
i have problems with HTTP2 protocol on my NGINX server, this is my configuration
listen 443 ssl http2;
server_name adomain.com;
root /var/www/project;
limit_req zone=one burst=60 nodelay;
add_header Strict-Transport-Security "max-age=2592000;…
Leonel Franchelli
- 71
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7
votes
2 answers
Can the iPad remember the iTunes password when using Meraki MDM?
I'm currently using Cisco Meraki MDM to manage apps that get pushed out to company-owned iPads. In order for the company to retain ownership of the apps we purchase, apps are installed through the company iTunes account.
The problem is that when the…
khit
- 105
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7
votes
4 answers
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 purchase apps, as these apps can be purchased with…
Jonah H.
- 203
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7
votes
1 answer
Why would Windows Server not respond to DHCP DISCOVER?
My network was working just fine and I broke it.
There is a Cisco 1711 router which was configured to hand out DHCP leases to the client PCs. I have a domain controller (Server 2008) on the same network that I wanted to take over the DHCP role. I…
Nic
- 13,025
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7
votes
4 answers
Cisco IOS QoS prioritize SSH but not SCP
How can I prioritize ssh traffic to ensure low-latency but throttle SCP file transfers? I'm looking for a solution that is not host specific so I don't have to add lists of IP addresses. Thanks!
ensnare
- 2,132
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6
votes
5 answers
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 thing I found was the Cisco Auto-Upgrade Manager,…
red888
- 4,069
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5
votes
1 answer
Setting spanning tree link "priorities" in Cisco switches
I've got a pair of C2960G-48 switches (running IOS 12.2(46)SE, if it makes a difference) with redundant trunks in place. On these switches there are a bunch of VLANs that carry quite heavy traffic at times (enough to completely saturate the trunks…
womble
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5
votes
3 answers
Email from IOS with attachments larger than 7.5Mb gets stuck in outbox and constantly tries to resend. Costs us hundreds in data fees
We have an on premise Exchange 2013 server. When sending email with large attachments from ActiveSync accounts on IOS devices, the email gets stuck in the outbox and won't send. It keeps trying to resend and can cause our users to blow their data…
eltommo
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