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.
309
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Plesk cron iOS notifications randomly stopped working [closed]
Recently, I started getting these cron error from Plesk. This cron controls push notifications to Plesk Manager on my iPhone/iPad. Obviously, turning off the cron stops the error but I want the cron ...
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2
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Having two IP Routes/Gateways of last Resort on an HP Switch
We have an HP Layer 3 Switch that is doing IP routing between vlans. The general set up is that the switch has an IP address on each VLAN and IP routing is enabled. On our servers VLAN, we have a ...
0
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1
answer
821
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Is it possible to configure a Cisco router to serve as a Teredo relay?
The router in question is a Cisco 871, show version as follows:
Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 12.4(24)T8,
RELEASE SOFTWARE (fc1)
Technical Support: http://www....
0
votes
3
answers
7k
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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
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1
answer
3k
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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 ...
1
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2
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470
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Cisco IOS Setting up a password/secret
I'm figuring out the basics to CISCO Ios commands and I am struggling to find out the answer to the following question:
What would provide a better protection when you set up a password to allow ...
1
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1
answer
342
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iPhone loads Wi-Fi captive portal page over 3G (iOS 6)
I've made a captive portal using iptables NAT redirection and white-listed MACs. This works nicely, and iDevices pop up my login/terms page after association. However, I've noticed that when 3G is ...
0
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1
answer
32
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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
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2
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95
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Cisco Archiving of Logs - Rebooting device resets file count but doesn't remove files
We are using the cisco IOS feature of configuration archiving and it has been very useful.
One thing we are finding is that we have set the maximum file count to 14, which is fine.
Except when we ...
0
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1
answer
1k
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Cisco ASA 5520 is missing management interface
The ASA 5520 show version shows the following
Cisco Adaptive Security Appliance Software Version 8.4(2)
System image file is "Unknown, monitor mode tftp booted image"
Config file at boot was "...
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1
answer
321
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Is it possible to log Active Directory users internet activity on a Cisco Firewall-IOS router?
We are looking at replacing our Forefront TMG server with a combination Cisco ISE VMware instance and hopefully an Active Directory integration with our edge router. We need to log all authenticated ...
0
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3
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2k
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c1841 unable to recognize HWIC-1T (smart serial) card. any idea?
I have this problem where c1841 router unable to verify HWIC-1T card (with smart serial connector), you have to know that i have other routers with IOS
c1841-ipbasek9-mz.151-4.M5 and c1841-ipbasek9-mz....
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1
answer
3k
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IOS Port Forwarding and NAT involving a VPN
We have a Cisco 1921 router running IOS 15.1 at one of our branches which is connected via a L2L IPsec VPN to a ASA5510 running ASA 8.2 at our headquarters.
The network looks something like this:
...
0
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3
answers
697
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IOS Nated port forwarding
I have cisco ios router with ios C1900 Software (C1900-UNIVERSALK9-M), Version 15.2(4)M1. And I have setup Nat with port overload (one public IP). And there is a static mapping:
ip nat source static ...
3
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1
answer
2k
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Dual Cisco Router Stateful Firewall
At my company we have a single Cisco 3925sec/k9 router running BGP with 2 ISPs.
Now we want to purchase a redundant router of the same model to eliminate a single point of failure.
I can set up BGP ...
0
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1
answer
278
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IPsec with various subnets on one side
I have the following situation:
Client subnet(192.168.0.0 /24) ----> Router ----> Internet ---->
ASA(172.17.0.2 /24) ---->
(172.17.0.1 /24)Gateway ----> (10.0.0.0 /...
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1
answer
1k
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Cisco ACL Block by Packet Length
I am presently blocking a small scale DDOS attack using IP addresses but all the packets are the same size, 1514 bits and I kind of don't want to fill up an ACL rule with a bunch of IPs. After reading ...
2
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1
answer
7k
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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 15:...
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2
answers
4k
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What are Serial network interfaces?
I am reading through documentation which talks about "Serial network interface" something which also shows up when IOS boots.
I never see "Serial network interface" defined anywhere. If my router ...
1
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0
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658
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Tool to parse Dell PowerConnect switch configs to make them more readable and diff friendly
I've been working with many Dell PowerConnect switch configurations over the years, and even though their configuration console is quite IOS like, it doesn't manage configuration statements the same ...
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 ...
7
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4
answers
281
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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 ...
3
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2
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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 ...
0
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1
answer
350
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EasyVPN vs Site to Site VPN bandwidth use
We have recently switched from site-to-site VPNs to EasyVPNs. At around the same time, we noticed increased bandwidth use. Does anyone know whether these two VPN methods use noticeably different ...
0
votes
1
answer
99
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dot3StatsDuplexStatus not firing from Cisco Switch
Anyone have any luck with this Trap dot3StatsDuplexStatus OID = 1.3.6.1.2.1.10.7.2.1.19
I am able to test the OID by doing an SNMP walk which shows the correct information, however no Traps are ever ...
1
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1
answer
496
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Cisco IOS: How is it possible to break with default config register of 0x2102
The default config register of an IOS device is 0x2102. The table here clearly states that 0x0100 signifies "Ignore Break," and that the default config register employs these options:
Ignores break
...
1
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1
answer
7k
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How to whitelist external access to an internal webserver via Cisco ACLs?
This is our company's internet gateway router. This is what I want to accomplish on our Cisco 2691 router:
All employees need to be able to have unrestricted access to the internet (I've blocked ...
0
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1
answer
2k
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Cisco AP, how to show dot11 wpa handshake timeout?
Please help me with a newbie question regarding Cisco AP CLI .
According to this Cisco doc , I know how to change WPA handshake timeout value to 2000 milliseconds.
Cisco1242AG-1(config)#dot11 wpa ...
3
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2
answers
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 ...
2
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2
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Cisco IOS router config -- how to disable SSH / SNMP on all but loopback address?
Sorry for the naive question; a quick reading of the cisco docs doesn't answer this question...
So I've got a router (say for the sake of argument a 4500 running IOS 15.x)
It has interfaces in 3 ...
2
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2
answers
5k
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How to determine most stable Cisco IOS release?
This post is about a Catalyst 4948E switch. I was looking on the download page and realized that there are no "GD" versions available. Are the "ED" versions stable? Even if you change "ED" to "GD" ...
3
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1
answer
4k
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Can a Private VLAN trunk also trunk normal VLANS
Imagine a topology with Switch A and Switch B trunked together. Also imagine a router on a stick attached to Switch A that routes for these VLANs. The VLANs are as follows:
VLAN 1 = 10.1.1.0/24
...
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1
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Using PVLANs with normal VLANs in a trunked environment
Assume a trunked environment with two switches, S1 and S2. The swtiches are connected with a trunk port designed to pass VLAN 26. What would happen if VLAN 26 on S2 is configured as a private-vlan ...
10
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1
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234
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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
...
1
vote
1
answer
136
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Does IOS 12.4 Basic have the “ip nat pool …” available
Could someone with Cisco IOS 12.4 Basic check to see if the command "ip nat pool" is available?
We have 12.2 basic and I know it is in the 12.4 advanced version but our budget is very limited so I am ...
4
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1
answer
1k
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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 ...
1
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2
answers
10k
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Cisco: show run vlan # vs show run int vlan #
What is the difference between the two commands?
Show run vlan # = blank output
show run int vlan # = vlan configuration
Likewise:
show vlans
No virutal LANs configured
show vlan
...
1
vote
2
answers
7k
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ASA 5540 Enable Password Issue
I have a Cisco ASA 5540 running the following Software/Manager version:
Cisco Adaptive Security Appliance Software Version 8.2(2)17
Device Manager Version 6.3(2)
I use ASDM to make changes to the ...
2
votes
2
answers
3k
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Factory Reset my Cisco 1841 Router, Serial cable required?
Is it possible to connect to my Factory Reset Cisco 1841 router without the blue com cable? For instance is there a default IP address I can connect through one of the ethernet interfaces? I just did ...
0
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1
answer
577
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Route-map changing from permit to deny retains the match tag values
I have a route-map configured on my cisco router with name say s1 and sequence number 10(default) which contains a match tag 10. If i again try to configure the same route-map name with same sequence ...
2
votes
1
answer
2k
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Cisco Catalyst 4500 Policy Based Routing
In order to test a new firewall I just set up I'm trying to implement policy based routing on our core switch. I want traffic from certain vlans to be routed to the new firewall while everything else ...
0
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1
answer
3k
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GNS3 - Emulating a not supported Cisco router (model 881w)
I want to create a new configuration for a Cisco 881w from scratch. So I want to replicate my environment on GNS3.
But I cannot emulate a Cisco 881w (which is the router i have) into it. So I am ...
1
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2
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Cisco IOS PBR - PBRing Skype
I've got a very simple question, which seems to be extremely difficult when put into practice.
I have a Cisco IOS router with two Internet links (one over a WAN, through a proxy, everywhere, etc.) ...
1
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2
answers
844
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What "reachability" means in a routing table?
Check this routing table
track 1 ip route 10.46.52.5 255.255.255.255 reachability
ip route 10.1.0.0 255.255.128.0 10.243.222.1 track 1
ip route 10.1.128.0 255.255.128.0 10.243.222.1 track 1
ip route ...
0
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2
answers
7k
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Cisco AP Recovery mode - TFTP issue
I am booting without IOS and I get this prompt:
ap:
then I issue these commands:
ap: set IP_ADDR 192.168.0.111
ap: set NETMASK 255.255.0.0
ap: set DEFAULT_ROUTER 192.168.0.1
ap: tftp_init
ap: ...
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2
answers
5k
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Cisco 881w AP factory reset
If I want to return to the factory IOS and configurations of the AP only, I must issue this command:
service-module wlan-ap0 reset default-config
right?
But which IOS is going to replace the ...
0
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1
answer
440
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Cisco AP commands dissapeared after IOS downgrade
enter code hereAfter downgrading a Cisco 881w AP (WLAN-AP), something went weird.
When I connect on the WLAN-AP interface using:
service-module wlan-ap0 session
I got this prompt:
AP588d.09ba.156e&...
3
votes
2
answers
9k
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Configuring a loopback interface on a Cisco router
I have Router 1 with the following interfaces:
FA0/1: 192.168.9.193 255.255.255.224
S0/0/0: 192.168.9.129 255.255.255.224
S0/0/1: 192.168.9.161 255.255.255.224
This is for my assignment at ...
2
votes
0
answers
572
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Is it possible to embed TCL directly into a Cisco startup-config?
Is it possible to embed TCL directly into a Cisco startup-config? From the (lack of) information I'm finding, it doesn't look do-able.
I have a tool that generates Cisco configurations based on some ...
4
votes
2
answers
2k
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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 ...