Questions tagged [ios]
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 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 ...
- 283
10
votes
3
answers
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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:...
- 1,786
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2
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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 ...
- 70.7k
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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
...
- 39.5k
9
votes
3
answers
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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 ...
- 70.7k
9
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4
answers
3k
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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 ...
- 851
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1
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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 ...
- 8,753
7
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4
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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!
- 2,222
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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 ...
- 105
7
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1
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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 ...
- 13.5k
7
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4
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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 ...
- 203
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2
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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;
...
6
votes
5
answers
14k
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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 ...
- 4,233
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4
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Forcing Dovecot 2.3.4.1 to use TLSv1.2
Since the new Debian Buster update, I have some issue with TLSv1.3.
Issue: my iOS mail client could not connect to my mail server (12.2) and I do not want to upgrade right now, so I try to find a way ...
- 61
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3
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Why do I start at privilege level 1 when logging into a Cisco ASA 5510?
I have created a test user that is set to privilege 15 in the config:
username test password **************** encrypted privilege 15
When I log in to the ASA 5510 I am in privilege 1 according to sh ...
- 645
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votes
1
answer
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Tag/Untag VLANs from Port Perspective on HP Switch
I'm familiar with vlans and tagging, and we usually use the command line interface for our HP Layer 3 switches. I've done quite a few:
vlan 10 untagged 21
I've always wondered if this was possible ...
- 676
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votes
2
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1k
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Cisco IOS: Segregating VLANS
I am trying to segregate the traffic on the VLANs, as one is our visitor VLAN (VLAN 3 is the guest lan). It is a Cisco 881W router.
Here is my VLAN configuration:
interface Vlan2
ip address 10.10....
- 6,573
5
votes
1
answer
615
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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 ...
- 96.6k
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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 ...
- 129
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1
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How do you NAT Hairpin in IOS 8.3+
As I asked here and duplicated here it appears NAT Hairpinning is the answer I'm looking for to allow internal servers to loopback through the ASA to access external IP's (without using DNS Doctoring)....
- 484
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3
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How to advertise routes to IPSec tunnels in OSPF using Cisco IOS
I have Cisco 1800 series router (running C181X-ADVIPSERVICESK9-M) with lots of IPSec tunnels. I want to add this router to OSPF and configure it to advertise routes to remote subnets accessible via ...
- 354
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6
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Cisco vs Everything else
A huge debate raged when we were setting up a new phone system. The guys doing the install did not believe in paying high prices for Cisco gear when they could do the same things with lower priced ...
- 1,073
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2
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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 ...
- 125
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6
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Is there a way to submit a batch of commands to a Cisco router and have them execute from the router?
I need to change the configuration of a remote (6 hours' drive) client's Cisco 871 (IOS 12.4.15T) from my location because of some new internet service at his location. To be more precise, I need to ...
- 508
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votes
1
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Why did my Cisco router hang?
We have a Cisco 1841 in our storage IDF that was originally running a 12.4(1) IP-BASE image; I wanted to upgrade to an advancedservicesk9-mz image, but the flash did not have enough space, so I ...
- 8,325
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5
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Nginx+Apache2+LetsEncrypt with IPhone cannot display page
I have nginx+letsencrypt ssl cert and it's works fine for all but new iOS with Safari. It works fine with iPhone 4, but with iPhone 5 and newer it's not.
And I see multiple requests in nginx log:
...
- 61
4
votes
1
answer
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Does Cisco IOS support the use of variables in its configuration?
I'm configuring a Cisco IOS (version 15) router, and I need to use the same values in multiple places; in this case, I need to configure the router's name servers (ip name-server <address>) and ...
- 70.7k
4
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1
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Can you ping a Cisco Router's Loopback Interface from a PC using PacketTracer
I may be misunderstanding what you can do with a Router's loopback interface. I am trying to ping it from a PC on the same network.
I am using Packet Tracer to simulate this, a Cisco 1841 and a PC ...
- 988
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1
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Can somebody please explain IOS line authentication?
I'm trying to understand a config on one of our Cisco routers (teaching myself iOS) and have run into a problem with one line.
Can somebody please explain the "line enable" piece of the command below ...
- 2,606
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1
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Strongswan IKEv2 VPN on OS X 10.11 and iOS 10 Clients
After many days of searching on Google, through Serverfault, and even on the StrongSwan website, I have been unsuccessful in attempting to get StrongSwan IPSec/IKEv2 VPN working on OS X 10.11.5 and ...
- 181
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1
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cisco 870 assign IP
I'll try to be "short." I've successfully enabled http server option on my Cisco 870, now I need to reach it and use the web based configuration. I haven't found how to assign an IP to the router ...
- 201
4
votes
6
answers
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Is there a command in Cisco IOS to show all routes tagged with a specific tag?
In Cisco IOS, if I have a route-map entry as follows:
route-map redistribute deny 10
match tag 65000 100
!
Is there a 'show' command that will give me a list of all routes that will match that ...
- 10.3k
4
votes
1
answer
81
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Adding a new vlan to a pair of Cisco 4948E that are standby - any pitfalls?
at a branch office, we have a pair of 4948E as the network core. I need to add a new VLAN and haven't done so on these devices before. Here's an existing config on one of the pair:
interface Vlan20
...
- 36.2k
4
votes
1
answer
622
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Apple Server: "Trust this computer" automatically via Profile manager
I'm trying to figure out if it would be possible to push a "Trusted computers" list to an iOS-device via Profile manager. This to avoid the annoying "Trust this computer?"-dialog when connecting to a ...
- 53
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2
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Cannot ping outside Fa4 on cisco 871w Router
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 ...
- 45
4
votes
1
answer
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Cisco IOS XR version clarification
I've run across this cisco advisory
It says:
This bug was introduced in Cisco IOS
XR Software release 3.6.2 and is fixed
with SMU hfr-k9sec-3.6.2.CSCtd74795.
The SMU ID for this fix in 3.6.2 ...
- 307
4
votes
2
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Nginx gives "unsupported certificate purpose" for a client certificate from an iPad, but the same cert works fine on desktop browsers?
Our company's web application uses client certificates to authenticate. We want to add some iPad clients to the mix for inventory counting, etc. Client certificate authentication is working just fine ...
- 4,521
4
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2
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8k
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WiFi access point without internet access - iOS devices disconnect
I'm trying to configure a WiFi access point to offer a web service on the local network, without offering clients internet access. The web server has a fixed IP address (let's say 192.168.2.2) and for ...
- 41
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1
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How to redirect Cisco IOS's show output to HTTP URL?
I found there's a redirect output modifier of Cisco IOS ( version 12.2(53)SE1 ), and there's http: URI support:
#sh version | redirect ?
flash: Uniform Resource Locator
ftp: Uniform Resource ...
- 696
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votes
2
answers
13k
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QoS for Cisco Router to Prioritize Voice and Interactive Traffic
I have a Cisco 891W NATing Voice and Data to the internet over a 10mbit/2mbit connection. Voice traffic gets degraded when I upload large files. Pings time out as well.
I tried to configure a QoS ...
TJ Huffington
4
votes
0
answers
757
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strongSwan 4.5.2 with iOS and Mavericks, Connection Troubles
I am having trouble configuring strongSwan 4.5.2 to work with iOS 7 and OS X Mavericks. I have followed these two guides, but am still encountering problems.
http://teebeenator.blogspot.com/2013/06/...
- 41
3
votes
3
answers
422
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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 ...
- 659
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2
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7k
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What is the Cisco iOS (CLI) command to display a WAP's Radio MAC address?
I can't believe I'm unable to find this with teh g00glez or by RTFMing, but does anyone know how to display the MAC address of a Cisco WAP's Radio (wifi connection) from the command line?
show ...
- 53.9k
3
votes
1
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2k
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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 ...
- 75
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2
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Cisco Terminology: flash and nvram
I'm a student that will be taking my CCNA exam in early June and I'm doing a lot of practical revision, I tend to get sidetracked by little things such as this question I'm about to post. It's ...
- 31
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3
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cisco catalyst 2960S, which version of software to upgrade to?
This feels like a dumb question, but here goes.
I have a Cisco Catalyst 2960S switch that is currently running software version 12.2(55)SE3
The most current software listed on Cisco's website is 12....
- 855
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votes
2
answers
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Is there a Cisco IOS command that will show DIMM info per slot?
I have a Cisco 2811 with 256MB DRAM. I know this because show version tells me so. I want to upgrade it to 768MB. I know that this takes 1 - 512MB amd 1 - 256MB DIMM. I know that the 2811 has 2 ...
- 508
3
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2
answers
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strongSwan without password on iOS [closed]
I have the following problem: I need to authenticate on VPN with iOS without password, but with certificate only. The reason is I need "VPN on demand", which is active on certificate authentication ...
- 43
3
votes
1
answer
21k
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How to disable ICMP redirect packets in Cisco IOS?
I'm studying a "good practices" document for Cisco IOS, and one of its controls tells me to disable ICMP Redirect packets in the router. Sounds reasonable. So I go test it in Cisco Packet Tracker (a ...
- 680
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votes
1
answer
6k
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Monitoring incoming/outgoing packets on a Cisco switch
I would like to monitor (i.e. have the switch print out packets) incoming and/or outgoing packets on a Cisco switchport.
For instance, I'd like to be able to tell it: Print to the log all packets ...
- 39.5k