Cisco is a major provider of switches and routers to most medium and large companies. Cisco devices often run IOS or NX-OS. This is a generic tag to be used when no more specific tags are available. See the partial list of tags in the full Tag Wiki.

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Setting Up A Windows 2008 NPS Server As A Radius Server For A Cisco AP541N Cluster

I have a cluster of Cisco AP541N access points. I am trying to use the Radius authentication for WPA-Enterprise authentication, but I cannot get the APs to query the server properly. Does anyone ...
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Cisco ASA NAT - internal host see its public ip

I have a server hosted by a provider which uses Cisco ASA to do nat. The problem I have is that the internal server that is nat-ed with a public ip will see its public ip as source ip. This basically ...
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810 views

VTP does not update on client switch

I recently replaced the switch that was functioning as the VLAN server for the rest of the network. Since the replacement however, I have not been able to push any new VLANs to the Client switches. ...
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818 views

Cisco ASA: port forwarding to different IP depending on client IP/subnet outside

I have Cisco ASA 8.2(5) and would like to configure port forwarding. Cisco ASA has 2 interfaces: outside with IP 192.168.57.2 inside with IP 192.168.1.1 I have two subnets reachable through ...
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1k views

Cisco WLAN Controller not pushing out DHCP addresses, what else could it be?

On our Cisco WLAN Controller web interfaces, in Controller > Interfaces, I have made a new interface with these settings: VLAN Identifier 202 IP Address 172.16.202.1 Netmask 255.255.255.0 Gateway ...
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435 views

Is it possible to load access-list on Cisco Router with BGP or SNMP?

I was wondering if there is any Cisco product that supports import of external list with IP ranges to be blocked or allowed. CIRD format: # List distributed by ... 123.15.49.0/24 60.166.28.0/24 ...
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26 views

Add non-flex switch to existing switch stack

I have an existing stack consisting of two CISCO 2960-S series switches. They are connected using the flex-stacking cables in the back, the top one being the master and the lower being the slave. I ...
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2k views

IPSEC Tunnel with OpenSwan on Ubuntu <-> CISCO Router

I have setup a tunnel between a UBUNTU SERVER linux box and a CISCO ROUTER. This is what's the topology looks like: host 1 ------ UBUNTU SERVER IPSEC <---> CISCO ROUTER ------ host 2 | ...
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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 ...
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895 views

Gre Tunnel Cisco Linux traffic forwarding

I setup a gre tunnel a cisco router and a Linux machine, the tunnel interface in the Linux box named pic. Well i have to forward traffic coming from cisco through the Linux box. the rules i've set in ...
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23 views

why cisco VPNC work on the second time each time and not on the first time

I use the vpnc ( cisco VPN that installed on linux red-hat 6.X ) and the vpnc.conf file look like this more /etc/vpnc.conf ## generated by pcf2vpnc IPSec ID Comvwde IPSec gateway 217.118.6.7 ...
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303 views

Cisco Serial vs T1/E1

I have a router and I have the chance to receive the WAN connection either from a Serial port (Smart Serial) or T1/E1. I have both cards for Serial and E1/T1 interfaces. I really don't know what are ...
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139 views

Fixed ip to specific lan port

How should I go forth to set a fixed/static ip dedicated to one lan port in my switch or router, so that everything i plug in that specific port acquires the same ip? I have a Linksys EA6700 Wireless ...
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1answer
22 views

enable lacp mode active on isr 2951

Any idea if ISR 2951 support LACP ... i don't see any cli command to enable it. My router IOS version is 15.2(4)M7. Can you help please. below is my config: interface Port-channel1.1 description ...
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73 views

QoS - What is the 6. Bit in the DS-Field?

RFC 2474 uses the ToS byte for Differentiated Services Code Point: 0 1 2 3 4 5 6 7 +---+---+---+---+---+---+---+---+ | DSCP field |CU/ECN | ...
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2answers
5k views

Cisco router - edit or view file content in telnet

Is there a command for editing (or at least viewing) text file content (that is on flash card) ?
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2answers
19 views

cannot access my cisco 881W AP interface

I have a new Cisco 881w AP and I am trying to get to the AP interface. When i follow the procedures outlined by Cisco, i get asked for a username and password. I have tried all the suggested ...
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818 views

Cisco VPN and .pcf file

I have few of profiles .pcf files , and I used them in order to automate the vpmclient connection VIA CLI command I have WIN XP server for example vpmclient connect "customor_alpha" ...
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1answer
1k views

Cisco, How to do a subnetting scheme using VLSM and RIP-2?

I'm studying for my CCNA exam and I have to create a VLSM scheme using RIP-2 for the following requirements: (this is an exercise) Use the class C network 192.168.1.0 network for your ...
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2answers
587 views

Cisco switch port to ip address mapping

How can I pull a list of the IP addresses that each device has that is connected to the switch. Example: Port: gi1/15 = 192.168.1.4 Port: gi1/16 = 192.168.1.5 What command do you suggest?
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2answers
1k views

Cisco 2516 Console access via RJ45 port?

I have just taken delivery of a basic Cisco lab and I would like to check the routers and switches etc. are in 'working' condition before I start playing around with them. The first hurdle is ...
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1answer
2k views

Cisco IOS command : default-information originate vs redistribute static

I am quite confusing with the Cisco IOS command. what's the actual difference between redistribute static as i learn in EIGRP whereas default-information originate in RIP/RIPv2/OSPF? I hope to get ...
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3k views

How to delete multiple files from a Cisco router flash memory

I have filled up my router's flash with voice files and folders and wanted to remove them. I there a script that can delete all files in flash except for the IOS image?
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1answer
624 views

CISCO : vtp server and client

I was doing some cisco exercises on configuring a vtp server and client, something I can't figure out is : I setup a vtp server, added my VLAN's I then took another switch that was attached to ...
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43 views

Cisco non-designated

Suggest I have two switches with two links to eachother, is there a way to manually set the non-designated port ? (apart from changing the speed on the port)
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115 views

VTP server : advertising a vlan that should not be on the trunk

On a vtp server, when configuring the trunks, I am not allowing a certain vlan on that trunk. However it still gets advertised by the vtp server. It cannot be used, but I am wondering if there is a ...
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480 views

CCNA Case Study - Static Routes

I'm currently doing the CCNA (Cisco Certified Network Associate) course at school and am a bit stuck on my case study, so I was wondering if anyone could help. I have the following topology: I ...
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234 views

Can 'show mac address-table' be used inside user mode? [closed]

I've been studying for my CCNA exams using Cisco ICND1 Official Cert Guide, Wendell Odom. On one question they ask in which modes show mac address-table can be executed. The answer is User mode and ...
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1answer
58 views

Simplex, half-duplex, full-duplex (ccent1)

If simplex, half and full duplex are OSI layer 5 (session layer) modes, why are they configurable on a l2 switch?
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12 views

Cisco CallManager AXL SQL Toolkit - Retrieve directory number and user ID

I have the below SQL query to retrieve the list of userid and their telephonenumber using Cisco CallManager AXL SQL Toolkit: sql query="select d.name as deviceName, e.userid, e.telephonenumber from ...
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42 views

Cisco vpn access to another router

I am using a Cisco ASA 5505 to VPN into my network (which is working great), and I want to connect to a different network that is on a Asus RT-N66v. For example: network 10.1.1.1 is my VPN and ...
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1k views

TACACS+ - Cisco Router - Failover to local database not operating as it should

I have TACACS+ working and now I am trying to set it up so that it will failover locally if the TACACS+ server is unavailable. My goal is for it to check the TACACS server first, then failover if it ...
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1answer
4k views

How to view call history for users on Cisco Unified Communications Manager?

Is there a way to view the call information that can be found on the phone such as received calls, placed calls, and missed calls?
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How to automate updating of a setting on Cisco phones remotely?

Normally, to make a change one would get the IP address of a Cisco VOIP phone, access its settings via a web browser and make any changes to the settings they need to using the web interface. Is it ...
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31 views

Is there a Cisco IOS command for finding out the serial number of a switch / router?

I am doing an inventory of all of our switches and I was wondering if there's a Cisco IOS command that will return the serial number for a switch and router? Thanks in advance!
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Link-local address is unreachable

I have configured ipv6 on Cisco ASR 1000. Cisco configured as BGP router. LAN interface connected to linux and windows machines. All ipv6 addresses on CentOS and Windows are static. I checked Cisco's ...
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1answer
34 views

Limit bandwidth in cisco router with policy-map doesn't work

I have a problem with my scenario in limiting bandwidth of ubuntu PC in GNS3 with class-map and policy-map. this is my topology in GNS3: ...
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1answer
45 views

Cisco ASA - difference between inside_access_in and inside_access_out?

So a minor problem we have is any internal servers have no (non-icmp) access to the outside is being blocked. Our current config is: inside_access_in any ---> any ---> icmp inside_access_out ...
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2answers
1k views

XenServer 6.0.2 and Cisco 3550 vlan configuration

I am running a couple of xenserver 6.0.2 hosts with multiple vm's on them. All the xen hosts have 4 physical network ports connecting to the cisco. Each port is untagged in xen but is tagged to a vlan ...
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1answer
56 views

how to setup snmptraps to automatically report ports that when down due to 'err-disabled'?

I'd like to automatically monitor all ports on my switches and get notified whenever a port goes down. So far I have to connect to each switch manually and read out the disabled ports by hand: show ...
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2answers
244 views

Load balancing across uneven links (Cisco\OSPF)

I know that OSPF will load balance across equal cost paths such as: R1 ------------------ R3 | 100mbit | | | | 1gbit| |100mbit | | ...
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27 views

Catalyst 3750 switch shows gibberish in the console on boot (could be a baud rate issue)

I've got a Catalyst 3750 series switch here, I switch it on by holding the 'Mode' button and then plugging in the power. In PuTTY console I can't type anything, but when I press anything on keyboard, ...
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50 views

Route Email to external IP Cisco ASA 5515

I have a cisco ASA 5515X with two WAN connections and one LAN connection. As far as I understand, I hace the firewall configured to allow SMTP traffic through WAN2 interface, but not through WAN1. ...
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34 views

Many error lines in snmpwalk report

Devices : Cisco SG 300 switch / Ubuntu 14.04 LTS when I run a snmpwalk, I get many error lines before the actual requested datas. Example: snmpwalk -v3 -u public 192.168.0.20 IF-MIB::ifHighSpeed ...
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3answers
1k views

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 ...
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Setting up Splunk/IronPort WSA

I recently stumbled across Splunk 4 (by way of an advert on this very site...) and found that it had an "App" that's designed to work with Cisco IronPort WebSecurity and E-Mail Appliances! That's ...
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3answers
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Configure hairpinning on Cisco 871 IOS 12.4(15)T4?

I'm a newbie to IOS. In the past I've used consumer routers which seem to have the smarts to automatically route requests to internal hosts addressed by their public name back to the internal network. ...
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25 views

How to terminate any ip/ip tunnel which has this host as destination

I am in a situation where I want to terminate any tunnels at one device. I.e. I want to be able to create a tunnel to this device from any source ip adress. Something which can inspect a packet, see ...
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how to allow a subnet to surf internet in Juniper and Cisco ASA

how to allow a subnet to surf internet in Juniper and Cisco ASA is there an configuration example to show allow a subnet of class C IP address to surf internet in Juniper and in Cisco ASA ? assume ...
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47 views

How to setup Cisco IOS with multi public IP's

I'd like to set up a little network environment. We have bought 2 different subnet from our ISP. The WAN internet connection : xx.yy.81.61/26 WAN gateway: xx.yy.81.1 First subnet : xx.yy.81.80/30 ...