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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Serial connection to Cisco C40 not taking input (Putty/Hyperterminal)

I have a cisco c40 video codec that is not accepting the admin credentials that I established for it over SSH/HTTPS. I suspect that the config file is corrupt as there are other erroneous behaviors in ...
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3answers
72 views

Filter network traffic through 2 WANs depending on IP?

I've searched thoroughly in an attempt to find a similar question here, but aside from finding information about pfSense (which appears to only support 1 WAN?) I can't find much else... Our current ...
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1answer
53 views

Cisco ASA separating networks

We are using a Cisco ASA 5505 running ver 9.0 to separate our corporate (inside) network from a dev lab (outside) network. We would like to use NAT or PAT to forward the inside interface IP to a set ...
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3answers
404 views

Why can i not ping my host behind the firewall. Cisco asa 5505 [closed]

Can anyone please help me to figure out what in my configuration of the Cisco asa 5505 is wrong or missing. I have multiple host behind my firewall these hosts run different websites on port 80. I am ...
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1answer
383 views

Cisco IOS, Multiple WAN & Port Forwards (Outside -> Inside PAT)

I have been trying to work out how to accomplish PATing from Outside to Inside on a Cisco IOS router, in this case specifically a Cisco 2901 running IOS Version 15.1(4)M1. Firstly, the problem I am ...
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1answer
43 views

Third party getting access to industrial machine on network

I need to allow an outside company to get access to an industrial machine that is on the internal network of our company. The network setup is a Cisco router that is owned and controlled by our IP ...
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1answer
91 views

How can I tell if a cisco router is dropping pings due to DOS suspicion or if it's experiencing packet loss?

We use a PRTG server that's connected to a cisco 6500, which feeds a large network of about 1200 switches and radios in a router-on-a-stick topology. In PRTG I'm able to set a 'ping burst' sensor on a ...
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2answers
111 views

Maximum power allowance for server rack

I have a server rack which consists of the following items 1) 1 x Cisco 3750V2 Layer 3 switch (24 ports) 2) 3 x Dell Power Edge R720 I am not sure which criteria I should be looking for to ...
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1answer
48 views

Cisco RV220W - No route to host between devices on the same subnet

I have a problem where devices cannot connect to each other using their respective IP addresses, but if a device uses it's own IP address it can connect. When you try and connect to a remote device ...
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22 views

Open ports in firewall on Cisco SRP500 Series?

I have a Cisco SRP527W. I cannot work out how to open ports in the firewall for all machines. In the past, I port forwarded to the server, but now I just want a port open to all users of the network. ...
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1answer
27 views

Getting L2 switch info from the data port on a Cisco IP phone?

Here's what I'm trying to do: I'm trying to get the information on which switch/port that a jack wired to. On that jack, there is a Cisco IP phone (7942), and a computer plugged into its data port. ...
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1answer
52 views

Cisco Router configuration prompt not working

First of all I am new to Cisco, We are moving from an old T1 to Fiber Optic and I need to configure our Cisco 1841 router to the new IP, DNS, etc. I watch some videos and I get the overall concept ...
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62 views

Cannot Reach Secondary Subnet on Same Interface

I am running a Cisco 1841 which has an unmanaged Dell 2848 connected to it. Connected to a WIC card in the 1841 is a fiber run which goes to a subnet of devices. The primary subnet is 192.168.2.0/24, ...
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0answers
38 views

Cisco multi switch / multi VLAN monitoring

I have a DMZ and a internal LAN with VLANs that I wish to port monitor by means of a NIDS and three switches, if this is possible. Switch 1 (DMZ) 2950 / VLAN 10 & trunk port to Switch 3 Switch 2 ...
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2answers
170 views

Creating a bridged network in ESXi VSphere using VSphere client

I'm new to ESXi and i'm trying to configure a small server of guest machines, each running windows 7 starter. my goal is to let the workers connect to the ESXi server, get a windows "computer" and be ...
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0answers
17 views

cisco switch 4900M X2-10baase -LR module

I have cisco 4900M series core switch as we have installed X2-10base-SR module for MM fiber.For long rang we have brought X2-10base-LR module for single mode fiber. After installing the module in ...
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4answers
573 views

Cisco ASA Implicit rule dropping traffic

The network is as follows: Two Default Gateways exist on the network - one which provides connectivity to the an MPLS with several subnets. Let's say 10.0.0.2 Another which is a Cisco Firewall, on ...
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1answer
129 views

Migration to Cisco Nexus 3064-T

In my environment I have 9 ESXi servers (ProLiant DL360 G7 & DL360p Gen8) and NetApp FAS2240 that is used for storage (NFS datastores). Currently, we have 1Gbps network with multiple VLANs ...
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1answer
42 views

Cisco Router DHCP Error Logging

I am troubleshooting an issue where a DHCP client is not receiving an address during PXE boot, but receives an address with no issues once booted into Windows. Our Cisco router is also our DHCP ...
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1answer
87 views

IPSEC one way issue

We have a frustrating issue and I'm hoping someone here can see what I'm missing. We have a small hub and spoke network between 4 sites and a datacenter, each location connecting to each other ...
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0answers
33 views

Snmp - clear portsecurity sticky address in cisco

i am writing script to clear particular sticky mac address. I have fount that snmp oid is: 1.3.6.1.4.1.9.9.315.1.2.1.1.14 it can take following values: 0:done 1:dynamic 2:static 3:sticky 4:all ...
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1answer
62 views

IPSec site to site VPN

I am trying to connect our server to cisco site-to-site IPSec VPN with one of our partners servers, they asked us to implement the settings they gave us into our router, but actually we don't have ...
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86 views

Cisco ASA 5505 VPN users access to local LAN denied

I have this running config: : Saved : ASA Version 8.2(5) ! hostname TESTATES domain-name TEST.com names name 192.168.1.0 AsusWireless ! interface Ethernet0/0 switchport access vlan 2 ! interface ...
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3answers
102 views

Using a computer with many COM ports as a low cost out of band solution?

I'm trying to come up with a cheapo out of band solution for my cisco routers in our data center. I want to be able to access them directly from the console remotely so if they are not accessible from ...
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1answer
57 views

Find different switches from cdp output

I have three cisco switches, all with CDP enabled. From the console of the "core" switch I give the command "show cdp neighbors" and the output is: Capability Codes: R - Router, T - Trans Bridge, ...
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107 views

Authenticating Cisco Phones EAP-TLS Windows NPS

We are using windows NPS server for radius authentication and would like our to set up 802.1x authentication on our phones using EAP-TLS. The NPS Server trusts the certificates (using the built in ...
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1answer
576 views

Cisco Voice VLAN with 802.1X Authentication

I've got a Cisco Catalyst 2960 that I'm trying to configure for a remote office with 802.1X wired authentication. The setup I'm going for is Switch -> VoIP Phone via Internal Switch -> ...
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16 views

Triggering an event with cisco event manager

I currently use event manager applet to monitor the state of an rtr track track 1 rtr 123 reachability. This currently logs to a syslog server as well as sending an e-mail. I now need to do some ...
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1answer
36 views

Aironet 1252 not booting

I have a 1252 Aironet AP that does not boots up. I've plugged the console cable, but displays nothing. After connecting power via PoE, I just got the radio LED on red after 5 seconds. I've checked ...
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0answers
145 views

Does Cisco IOS support NPTv6?

I'm looking to do a small multi-homing setup which is currently achieved, with IPv4, using NAT. NPTv6 seems to be a good way to do this for IPv6 however I cannot find how to configure this on Cisco ...
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1answer
68 views

SSH/SFTP over WiFi issues

Some time ago we have purchased a Wireless Controller (AIR-CT2504-K9) with few Access Points (MIMO 3x3). The number of users on one access point is around 20-25 simultaneously. As I have understood ...
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63 views

Cisco Cryptochecksum generation

I ran 2 commands - a show start and a show run. I noticed that the cryptochecksums were different. My main question is understanding the cryptochecksum and how it is generated. Is it different ...
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43 views

Determining the side-effects of enabling unicast reverse-path forwarding on Cisco ASA 5505

I am trying to find out what (if any) negative side-effects there would be to enabling Unicast Reverse Path Forwarding (uRPF) on a Cisco ASA 5505 - I need to do this on a router which I do not have ...
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1answer
143 views

Need VLan to route to Internet

I have a Sangoma box here. This is Lync in a box... There is AAR Reverse proxy (VM) on the server and it has an IP of 10.10.9.7 on The "External" interface. I have 10.10.10.5 on the "Internal" ...
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1answer
79 views

Stuck with Cisco DHCP pool issue

Yes, I have searched, googled, sworn, googled more but have not quite found the answer I need, .. I have also posted this on a Cisco forum but, as I discovered at stackoverflow, the Stack* forums ...
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1answer
81 views

Can IPS monitor both inbound and outbound traffic?

We have a user traffic flow like below (PC - Internet) PC => Cisco ASA FW+IPS integrated => Fortigate Proxy (ISP connected to this Proxy) = > Internet PC = > ASA+IPS ==> Fortigate Proxy ==> ...
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1answer
164 views

Federation with Office365 results in an Outlook UserAgent change and an Ironport block due to Webfilter

The following Cisco bug documents that when Exchange is federated with Outlook.com the Outlook user agent changes so that any email based image is blocked as webmail on the ironport. ...
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90 views

CSR1000v image in Openstack as a VM

I have an esxi host. Under that I have created a Ubuntu 14.04 machine running Openstack(devstack single node)Juno release. I am trying to spin CSR1000v image as a VM inside Openstack. I followed the ...
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1answer
47 views

Managing two switches and one Router [closed]

I have the following network : One Router : CISCO 860 (In : ADSL, Out : Yellow Ethernet Cable) Two Cable Panels Rack One : PANEL 24 ports (22) - DT24F Rack Two : PANEL 24 ports (22) - DT24F ...
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1answer
40 views

Authenticate WLAN using Hostname in Access Group

The hardware is Cisco APs and Windows 7 Enterprise clients, which currently allows users to authenticate based on an Access Group in AD. We're looking at instead of users account, using the actual ...
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0answers
53 views

Flat ISP network to MPLS dumb Q

I have a fairly flat ISP network that I am upgrading to use MPLS (dont ask why, that decision is above my position) but clients/CPE are authenticated using PPPoE. Each POP uses a router configured as ...
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1answer
116 views

Zabbix IPMI does not auth with Cisco C220 M3

server: Cisco C220 M3 Zabbix 2.4 Ubuntu 14.04 ipmitool works user1@zabbix3:~# ipmitool -I lanplus -H 192.168.1.45 -U admin -P Password1 -A MD5 sel SEL Information Version : 1.5 (v1.5, v2 compliant) ...
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2answers
995 views

SCCM 2012 R2 OSD pxe-32 : tftp open timeout

I have SCCM 2012 R2 standalone primary site on windows server 2012 and i have Cisco dhcp server i configured the distribution point for pxe boot to work with osd i added boot images and configured ...
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0answers
43 views

DHCP from Cisco 1921 failing after switch nr 2

I have a network which uses a Cisco 1921 router. The router is connected to a Dell Powerconnect 2848 switch and from that switch is a connection to a small SOHO Planet switch which 3 computers connect ...
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1answer
42 views

IPv4 ICMP Codes/Errors for WAN transmissions

Can someone tell me which IPv4 ICMP Codes/Errors i have to unlock as Best Practise for WAN transmission (RedHat und Cisco)?
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1answer
161 views

c7200 IOS 15.x-x NAT/PAT issue

My problem may be just finger trouble, but after fighting with this for a day on what should have taken 5mins, I am getting fustrated. I am not Cisco Certified at any level, just a fair amount of ...
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1answer
187 views

Unplug of Netgear Switch Causes Cisco Link Drop on Remote Switch

I have a very odd problem that I'm hoping someone might be able to give me even an idea of where to look. I have a new Netgear M4100-D10-POE layer 2 managed switch that we are installing in a remote ...
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1answer
272 views

ACL Rule to Open UDP Ports

I have the current rules in an attempt to open port 5060 and 10000-20000 for my VoIP provider. We are on a Cisco 1921 router. This ACL is applied to the WAN port on the router facing the ISP. Nmap ...
4
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1answer
333 views

Possible to have DHCP hand out different DNS server address when using different tunnel?

We have several ASA 5505 deployed. Currently, we have a setup where the local ASA is answering DHCP queries and is configuring clients with two DNS servers: our DR site DNS server (we use AD) and a ...
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75 views

Route part of a subnet to a different gateway

Data network is 10.220.0.0/20 DG is 10.220.1.19 I am trying to have all traffic in 10.220.8.0 - 10.220.15.255 (10.220.8.0/21) routed to this gateway: 10.220.1.251 I can't seem to accomplish this at ...