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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11 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 smae config but with v15.2 I can't put vlan's working. ...
1
vote
1answer
1k 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
votes
1answer
21 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
43 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 ...
-1
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0answers
12 views

handle consecutive connections from ios app to wamp server [migrated]

I have an ios app that sends a command to a php script listening on a windows 2008server with wamp 2.5. If no response comes back in X seconds it sends back the command to the server. Each command ...
2
votes
1answer
80 views

Packet loss on between firewall and uplink?

I have a moderately complex network topology between my external firewall and the internet, as shown below. Every so often - I haven't found a pattern yet - we're getting a significant degree of ...
0
votes
1answer
708 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 ...
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1answer
37 views

Version of IOS for Cisco 2900 series? [closed]

Can someone please provide the current version of IOS for the Cisco 2900 series router? I'm having trouble figuring this out based on Cisco's documentation. Thanks.
1
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2answers
36 views

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 ...
4
votes
1answer
69 views

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 ...
0
votes
1answer
57 views

Port Forwarding on Cisco Router

I'm a Cisco newbie, have the 1841, with two ethernet interfaces: interface FastEthernet0/0: Internal Desired destination IP: 186.67.181.140 interface FastEthernet0/1: External World IP ...
2
votes
0answers
132 views

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. ...
0
votes
1answer
77 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 ...
1
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0answers
75 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 ...
0
votes
2answers
848 views

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 ...
1
vote
1answer
47 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
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0answers
149 views

Unable to ping from/to Cisco IOS XE (CSR 1000v)

I have a lab that requires connecting an IOL router and a CSR 1000v (IOS XE). Both are set on Vmware workstation 10 - Win 8 within a proper VMnet. The other routers (IOL and XR) can ping each other ...
0
votes
1answer
95 views

iPhone can't authenticate at dovecot

I've set up a mail server running with postfix and dovecot. Mainly configured as described here. Also I created a signed certificate from Startssl.com. IMAP is running on port 993. From my computer ...
0
votes
2answers
1k views

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: ...
3
votes
2answers
172 views

Split multicast traffic on two vlans using IOS

Here is what I want to do: On a switch / router running cisco IOS ( Ideally it would work on a Lanbase image on a 3560G but it is possible to use 65xx routers also ) I receive two udp multicast ...
1
vote
1answer
83 views

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 ...
0
votes
0answers
23 views

Is it possible to hairpin on Cisco 851W IOS 12.4(15)T9 and how?

I need machines on the LAN to be able to access by the external address or hostname. If it can't be done, then just by hostname is OK as well, so I thought of just doing it through DNS on our internal ...
0
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0answers
79 views

Cisco 861 - Unable to traceroute

I'm having an issue with my Cisco 861. I'm unable to traceroute to any ip address from the router, even the next hop. Can anyone suggest possible causes. Apologies for the censoring but I won't take ...
0
votes
1answer
66 views

MDM Server Apple Certificate: Certificate Signature Verification failed

I want to create a MDM server to manage my iOS devices. I have enrolled in iOS Enterprise Developer program. And executed the following openSSL commands "1. Creating Certificate Authority (CA)" ...
0
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0answers
22 views

Adding ip routes for the additional WAN IPs on Cisco IOS? [duplicate]

I have a Cisco 800 series router. FastEthernet0 uses switchport access vlan 100, has one webserver on 10.0.0.2 FastEthernet1 uses switchport access vlan 101, has one PC on 10.0.1.2 FastEthernet4 ...
0
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0answers
54 views

Courier IMAP namespace prefix not used by default on iOS

On OSX Mail.app, connecting to my Courier IMAP server, everything is working fine. I can read mails, delete stuff, move it to trash. However, when using the same server on iOS, I get error messages, ...
0
votes
1answer
63 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 = ...
2
votes
2answers
798 views

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 ...
0
votes
1answer
61 views

APP installation - iPhone [closed]

I am trying to automate the installing procedure of iPhone apps (i.e) installing apps for around 5000 phones. For this I am planning to deploy an MDM server in Windows Server 2008 containing Active ...
2
votes
2answers
1k views

Basic IPv6 firewall on Cisco IOS for small network

Now that I have IPv6 connectivity to my network, I'm looking for a basic IPv6 firewall configuration for IOS. It used to be that we could rely on NAT to 'hide' internal (read: outgoing connections ...
0
votes
0answers
34 views

Cisco IOS log packets dropped due to no NAT entries?

I use access list logging currently, and update the access list to match the NAT table, and then the access-list deny any any log command is used for logging packets that were not allowed. However, I ...
0
votes
0answers
65 views

Site-to-Site VPN not connecting with Cisco 877

I can't seem to get the VPN connection going with my 877. I have an old IOS (12.4) but it looks to me like all the pieces are there. I have compared this config against the Azure-provided (albeit ...
1
vote
1answer
159 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 ...
8
votes
4answers
172 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 ...
10
votes
2answers
198 views

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 ...
0
votes
0answers
90 views

Cisco 1841 - Acting as a PPPoE terminator?

We have 2x Fortigate 200B firewalls that we wish to operate in Active/Active HA mode - though, obviously, they cannot do this with PPPoE/DHCP enabled on the externally facing interfaces. To overcome ...
1
vote
1answer
44 views

What network/device info can be obtained from an iOS device connected to an 802.11u-enabled access point?

In order to perform some device security validations, I need canonical references to what device/hardware/network information can be obtained from an iOS device connected to an 802.11u-enabled access ...
2
votes
2answers
59 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
56 views

Cisco switch restart doesn't reload config

Something really strange happened to me today. I was configuring a 3750 switch and halfway through the changes I messed up. So I did what I've always done, unplug the power cable from the switch and ...
1
vote
1answer
49 views

How can we better pinpoint instability issues on our network?

We have a medium-sized network of 600 users, all on Cisco switches. Where the users are allowed to plug in routers, etc. on the endpoints, so that they can use wireless and/or multiple devices in ...
0
votes
0answers
89 views

Cisco 1602: rewriting startup-config from terminal

How do I rewrite startup-config on a Cisco 1602 router without affecting the running-config? Outgoing connections from the router (scp, http) are not allowed. I'm not connected to the serial port, ...
0
votes
1answer
78 views

Cisco IOS, restrict IP addresses per ethernet port #

I am configuring a Cisco 881, and am interested in restricting individual ports on the LAN (FastEthernet 0-3). I would like to be able to limit the IP addresses that someone can use based on which ...
7
votes
2answers
694 views

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 ...
0
votes
1answer
947 views

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 ...
0
votes
0answers
37 views

CISCO IOS Forward (nat) specific IP to other IP and Port

I've a customer that has a CISCO 7604 as a Border Router.. (Within Network uses Mikrotik, Freeradius, Meraki, etc)... I'm trying (newbie with Cisco) to create a Forward Rule (in Mikrotik is a Nat ...
1
vote
0answers
477 views

Cannot access L2L VPN from RA VPN connected client on Cisco ASA 5510

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 7.2 at our headquarters. The ASA also provides IPSec Remote Access ...
2
votes
1answer
70 views

cisco ios - syslog version

I am writing small article on Syslog and I was wondering, if there is any resource that tells me what version of Syslog is supported in what ios version? By Syslog version I mean rfc 3164/rfc ...
4
votes
1answer
942 views

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 ...
1
vote
3answers
5k views

What does the Cisco ASA command “management-access” do?

I'm working with a Cisco ASA 5510. I changed the management interface to a different interface. I used the command "management-access" to get the new interface working, but the old interface ...
0
votes
0answers
362 views

Strongswan ipsec <--> iPhone, can't access LAN

I'm trying to connect to my LAN with iPhone, using Cisco IPsec VPN connection. I can connect to VPN, but I can't access any LAN devices. Hardware/Software: Strongswan 5.0.4, running on router - ...