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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3
votes
1answer
2k views

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 ...
0
votes
1answer
2k views

Cisco IOS: One SSID doesn't pull from the correct DHCP pool

I have 2 SSID setup in my Cisco 881W router. Our internal ssid pulls from the right DHCP pool (wpool), while our guest SSID does not pull from the right pool (gpool) Here is the router config ! ! ...
5
votes
2answers
850 views

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 ...
2
votes
2answers
6k views

Example mrtg config to monitor Cisco CPU/memory usage

I have an existing basic MRTG setup done using cfgmaker to monitor the traffic of our Cisco router. I'd like to add configuration sections to mrtg to have it monitor the CPU usage (min/avg/max if ...
0
votes
1answer
47 views

Cisco 871w security

I purchased a 871W ISR for a small business and want to know what's best use practice when setting up security for this type of router. At the present time I have a static IP assigned to it and can ...
0
votes
2answers
119 views

Cisco command wont work on syxtax checker

I'm trying to validate the building of a tool for managing Cisco ACL commands. Thing is i'm using the aclcheck sintax validator (i dont own cisco equipament) with the following command do check ...
2
votes
2answers
4k views

Cisco IOS: NAT overload for two WAN interfaces

I have a feeling the answer is policy-routing, but I'd like someone to clarify that. Basically I'm not having any luck getting NAT to work with two WAN interfaces. I have two WAN interfaces: fe0/1 ...
0
votes
2answers
580 views

Syntax checker working crazy with cisco

I'm trying to verify only two commands for cisco IOS ACL Extendend. They are: access-list 101 deny any 192.168.0.0/23 any access-list 101 permit udp 192.168.1.1 any For this i`m using a ...
2
votes
2answers
10k views

How to assign single port into multiple vlans

I have cisco switch 3560 and want to create vlans where in i can have a single port in multiple vlans. I tried creating one port e.g fa0/23 as trunk and then allowed it through multiple vlans but it ...
1
vote
2answers
1k views

Block Skype on Cisco IOS

I'm trying to block skype via policy routing but it's not working ... here's my configuration: class-map match-any block match protocol skype policy-map QoS-Priority-Input class block police ...
6
votes
4answers
1k views

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!
1
vote
1answer
591 views

Cisco IOS rewrite http url

Is there a way that I can configure my router to rewrite http requests? So for example, if: http://www.example.com/porn.gif is being accessed, it'll be re-written as: ...
1
vote
2answers
854 views

Management VLAN Cisco Catalyst

I have configured a couple of VLANs on a Cisco Catalyst switch with IOS, i will put all the ports that clients is connected to, into these VLANs. I want to configure the native VLAN [vlan 1] as ...
4
votes
2answers
7k views

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 ...
1
vote
2answers
5k views

RADIUS authentication on Cisco switches: how to assign privilege levels?

I need to configure some Cisco switches (IOS 12.x) to authenticate against a RADIUS server; the server is Windows Server 2003's IAS, and it validates users against his Active Directory domain. I know ...
3
votes
2answers
4k views

Can IOS be upgraded on a Cisco Catalyst 6509 switch without downtime?

There's this Cisco Catalyst 6509 switch with 2 (two) supervisor modules; one of them is active, the other is (almost always) in standby. We need to upgrade IOS; current version is 12.2.something (I ...
2
votes
4answers
2k views

Un-failing over a Cisco PIX 515e

We had a power outage at our data center last week and when our dual PIX 515E running IOS 7.0(8) (configured with a failover cable) came back, they were in a failed over state where the Secondary unit ...
1
vote
2answers
3k views

Cisco Aironet (802.11n models): how to put a WEP128 ssid and a WPA/WPA2 ssid on the same radio?

I'm using a Cisco AIR-1252AG (IOS 12.4(10b)JDA3) and I must provide both a WEP128 wlan (for compatibility with older embedded devices, this will go to a firewalled vlan) and a WPA2 (WPA1 would be ok ...
2
votes
2answers
3k views

Simple road warrior IPv4 VPN configuration in Cisco IOS

I'm looking to setup a reasonably simple road warrior VPN configuration on our Cisco routers. Frustratingly, I've been searching for this but cannot find a simple complete guide. Multiple (not ...
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 ...
2
votes
2answers
3k 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
2answers
645 views

Split horizon, route filtering, and having RIPv2 announce a non-attached route to host

Routers A, B & C live at 10.1.1.1, 10.1.1.2 and 10.1.1.3 on a /24 metro Ethernet subnet. Each router also has its own private subnet on another interface. Router B's private subnet links thru a ...
2
votes
2answers
2k views

Cisco router and switch configuration

I want to configure a Cisco 2600 series router to be DHCP server. To the ethernet port i want to connect a Cisco Catalyst 2900XL 24 ports switch, in this switch i want to connect a computer in port ...
2
votes
3answers
3k views

Help me with my Cisco ios config

I'm setting up a cisco 881 (this is my first ios device) I got everything working the way i want except port forwarding im trying forward all incoming port 80 traffic to 10.10.10.60 and I don't see ...
5
votes
1answer
517 views

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 ...
0
votes
2answers
476 views

output my Cisco 881 config

how does one "print" the startup config or running config. also what is the best way to import config you have stored as a text file?
0
votes
2answers
2k views

Setup Cisco IOS Static NAT

I'm trying to allow access to a printer on a separate LAN in the same building. I have control over only one of the networks... My attempt at not using another router failed see here. I now have a ...
0
votes
1answer
974 views

Configuration of Switch Module (WIC) on Cisco 3800

I have a 4 port module in my 3800 router, an HWIC-4ESW, that acts like a switch. I can configure IPs on each port if I do something like the following: conf t int F1/1 switchport access vlan 20 ...
1
vote
4answers
3k views

How do I find out what the WIC Model is from CISCO IOS?

How do I find out what the model number of a WIC is with an IOS command? In show interface all I get is 'Hardware is Fast Ethernet', I don't see anything under 'show hardware' either...
2
votes
3answers
597 views

*nix shell with IOS style completion?

Is there a Linux shell that will let you type less than full commands as you can with Cisco IOS, at least for the first command (and not its arguments)? I haven't really thought enough if this is ...
1
vote
1answer
6k views

Best way to view Cisco config file?

I just copied the config of our PIX 515 over to a TFTP server. I'm going to need to make some edits to this file before copying it down to a duplicate 515 device. Currently, I'm viewing the config on ...
2
votes
2answers
2k views

Using EIGRP to Advertise a VPN Tunnel Route

I have several routers all connected via a MPLS netowrk and one that is not. The one that is not part of the MPLS network is connected to one that is via a VPN tunnel. All the routers on the MPLS ...
0
votes
1answer
447 views

Cisco / IOS Priority of VPN Tunnels vs EIGRP Routes

If I have two interfaces, one which gets its networks from EIGRP, and another that is an internet connection with VPN tunnels. If the same network exists for match address of the VPN tunnels and an ...
2
votes
2answers
2k views

Route-Map vs ACL for Cisco NAT

Is there pros and cons of using route-maps vs access-lists for network address translation on a cisco router?
0
votes
2answers
4k views

ssh into Cisco router not working

On a 2800 series router, I used to be able to ssh in via two public interfaces, but now I can't seem to. One of these two public interfaces has an ACL, the other currently doesn't. When I ssh to the ...
0
votes
4answers
7k views

Cisco AnyConnect on IOS 12.4(20)T

There are plenty of tutorials on setting up AnyConnect on an ASA unit, and a handful of links noting that IOS 12.4(15) and later support AnyConnect, but I can't seem to find any good documentation ...
1
vote
1answer
167 views

Does Removing a WIC from a Cisco router ever effect the Saved Configuration?

If I: Shutdown a Cisco Router Remove a WIC and put in a new one of a different type. Boot the router and configure the new WIC just to test it, and don't 'copy run start' Shutdown the router and put ...
0
votes
1answer
3k views

Cisco SNMP OID for track/SLA monitor

I have Cisco 3600 router, and a few SLA monitors configured. Based on these monitors, I make a decision where to route users (basically a failover). It works very smooth and nice, to the point where ...
0
votes
1answer
1k views

IOS: tie SNMP v3 credentials to TACACS or RADIUS?

On Cisco IOS, I'm looking at moving from SNMP v1/2 to v3, which means separate user/password credentials instead of just community strings. Is it possible to have those user credentials pulled from, ...
3
votes
5answers
8k views

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 ...