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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Cisco 3560-X and Bind9 DDNS integration

Experts, In an infrastructure I'm currently working on, we have one Cisco 3560-X as a core switch and an internal Bind9 DNS server. The 3560 is acting as the DHCP server. BIND9 currently has names of ...
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31 views

Cisco ASA5505 Public IP Address

I am trying to configure a Cisco ASA5505. I am using the GUI start up wizard. When I assign the outside IP address to be a public IP address the configuration will work but after about 30 seconds the ...
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1answer
105 views

“dig +trace fqdn” and “dig fqdn” do not give the same result on a LAN with windows DNS server, why?

in my company LAN I have a Ubuntu 14.04 server running in Virtualbox (as guest) on a Windows 7 (the host) with network interface bridged (so the Ubuntu server belongs to the LAN, with its ip: ...
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2answers
211 views

Cisco ASA SSL VPN options?

Disclaimer: I am not a network admin so I may be wrong here but I thought asking here would help. I'm a developer mainly on the .net framework as well as helping get a mobile intranet app working. ...
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1answer
204 views

CISCO UCS servers and linux

I've been given a CISCO ucs server to use (for a job a raspberry pie could do) with a LSI MegaRaid card in it (4 sas drives) and I'm having no luck at all getting Linux to boot off the RAID thing. It ...
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25 views

Report on how many received calls on Cisco unified CM

I've been struggling with this a couple of days now and I feel like I've seen every webpage about Cisco Unity CM but just can't figure it out... The request I got sounded fairly simple: We want to ...
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62 views

Inter-VLAN Malicious Code Scanning

I am trying to find an inbuilt solution on a Cisco Catayst 3750X Switch to scan all traffic routed from one VLAN to another for malicious code. The situation is that we currently have a development ...
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0answers
20 views

Firewall Ports for Toshiba CIX server

Other then SIP ports: 5060 and 5061 what other ports need to be opened to have a phone set up in a satellite office with via external IP address. Phone Server CIX100 Firewall ASA 5510
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1answer
86 views

What could cause TFTP reloaded Cisco `running-config` on 871 to fail?

Cisco CCP Write Configuration borked my 871w config while I was trying to setup port forwarding. I went through the basic steps to reconfig the router. I looked to see if I could just reset the ...
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1answer
203 views

Cisco Catalyst 3560 PoE 48 with setting interface to auto qos voip trust

All I'm trying to do is copy the running-config from a Cisco Catalyst 2560 PoE 24, to a Catalyst 3560 PoE 48. This is f0/1 from the original switch: interface FastEthernet0/1 switchport access vlan ...
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28 views

Cisco 2600 password recovery disabled

I have a Cisco 2600 that I'm currently using as a doorstop. The reason for this, is that it has password recovery disabled, and even after following 'resolutions' online, it's still just a pretty ...
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2answers
2k views

Cisco ASA - Configure External Access to a Server

I'm trying to configure my ASA (ASA 8.4(2), ASDM 6.4(5) ) to allow external access to a server (using RDP). I've tried everything, but it doesn't seem to be working. I'm sure it is something simple ...
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4answers
5k views

Possible to configure Cisco switch (IOS) via SNMP?

Is it possible to configure a Cisco switch running IOS via SNMP? I know there is a method for initiating a TFTP copy via SNMP (doc), but is there something like port level config directly from SNMP ...
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0answers
42 views

How to fix stalled connection on large download

I have a cisco 1921 router performing routing and NAT function. Cisco 3750 is performing layer 3 core switching duties. Users are complaining about large file transfers being stalled (not dropped) ...
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0answers
44 views

Cisco NAC Agent keeps refreshing: Compliance Module version is available?

I have Cisco NAC agent installed on my domain-joined PC. It keeps displaying the following update message randomly: Cisco NAC Agent Compliance Module version xxxxx is available. Do you want to ...
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2answers
353 views

Cisco 881w AP password recovery

Hello I lost the passwords for my Cisco 881w and internal Access Point. I used the procedure here to reset the password on the router by booting into rommon and changing confreg to 0x2142. This ...
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1answer
70 views

Serving public IP-adresses through two ethernet ports with public subnets, while protecting some interfaces for remote access

Done a lot of research and it's all kind of confusing. Some switches are also firewalls, most firewalls seems to be routers, with or without their own switches, but they're all different depending on ...
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1answer
134 views

Cisco 2921 ISR Installation concerns

We are having a leased line installed by British Telecom, they have routed the fibre via our telecoms 'cupboard' (enclosed glorified cupboard in our reception area) which has no airflow and only 2 ...
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100 views

Site to Site VPN - Openswan and CISCO A2A

Below is the diagram that the VPN connection between Openswan server and CISCO A2A. http://i.stack.imgur.com/yQBSw.jpg client A and B are remote hosts with static ips. client X and Y are behind the ...
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2answers
1k views

Is there any information on the end of life for a Cisco WS-X6748-GE-TX

Is there any information on the end of life for a Cisco WS-X6748-GE-TX? Google is just telling me it is a replacement for a module that has gone end of life.
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88 views

SG300-52 Remote Management Layer 3 Connectivity

I have a brand new SG300-52. I was able to successfully access my switch remotely when on Layer 2 but once I switched to Layer 3 and reset the switch to factory settings I can no longer configure it ...
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2answers
1k views

VLAN not working in trunk between SonicWALL and Cisco

This was caused by me forgetting about a switch. Continue reading only if you're very bored SonicWALL NSA 3500 connected to Cisco Catalyst 3850. The SonicWALL has "sub-interfaces" (VLANs) V2, V800, ...
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34 views

Giving vpn users access to all connected sites

I have a cooperate network which is connected to the remote branches through MPLS network.I'm wondering is there any way that I can give access to VPN client users to access the resources on other ...
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2answers
415 views

Delay NTP Initialisation, Cisco 877W, IOS 12.4(24)T1

I have a Cisco 877W which I'm using for my home ADSL connection (and as a refresher in Cisco IOS). I've got a working config in-place with my PPPoA connection coming online correctly, and VLANs and ...
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109 views

cisco VPNC + how to use install certificate file on linux

I am using Cisco VPN on windows , before I run the cisco vpn I execute the certificate file as customor.cer ( when I execute the certificate file need to answer on some next screens and finish ) , and ...
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2answers
161 views

Can I run commands from a file uploaded to my Cisco ASA 5500?

I have to run a lot of ACL/access-group and network-object commands, and I have found a 1024 character limit for each command - even if it spans multiple lines. In code, I use 1,000 chars as the ...
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1answer
792 views

Configuring trunk port on Cisco Catalyst switch to serve DHCP settings for multiple VLANs

I am trying to configure a trunk port to serve single DHCP settings for multiple VLANs. I tried the following configuration, but to no avail. switchport mode trunk switchport trunk allowed vlan ...
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104 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 same config but with v15.2 I can't put vlan's working. ...
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0answers
100 views

Cisco 3750 vlan mapping

I have a Cisco 3750. Each customer send's data to our switch with the same S-VLAN but a different C-VLAN. They are 5000 different customers all need connecting to a single PPPoE server. How can I map ...
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108 views

Ping through a specific device or peer, BGP vyos

I am trying to figure out how I can compare latency to an end-point between two or more BGP peers. I am running VyOS 1.04 (community vyatta) and was using the linux ping command through command line ...
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237 views

Cisco IP Phone TFTP Error/Timeout

I'm trying to get Cisco 7942G IP phone working on FreeBPX setup. It has issues with getting things over tftp. I tried hard reset thing and I'm getting this in tftpd log: [root@localhost ~]# tail -f ...
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34 views

Number forwarding Cisco CallManager Express

I would like to set up number forwarding on Cisco CallManager so that when, for example, "888" is dialled, the call is forwarded to "00912345678". In my scheme the leading zero is for an external ...
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1answer
332 views

Configuring a RADIUS server for 802.1x over a Cisco Switch

I am trying to set up RADIUS authentication over a Cisco switch and I have gone through every tutorial they have. I am able to get the RADIUS server to authenticate when I access the CLI of the Cisco ...
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2answers
62 views

DHCP server does not work with 2 router [closed]

i have problem on packet tracer when i try to setup DHCP server with 2 different network and 2 router.. my setup is Two 2811 router, Two 2960 switch , One DHCP server and 4 PCs. in Router 1 I have ...
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48 views

Why would Cisco 871W intermittently fail to connect, but only some URLs?

Thanks to help in this forum I was able to get this 871W up and running. I've been having a strange, random connection failures to only some URLs. Try to link to a page and rather than spinning the ...
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1answer
141 views

Cisco AP vlan setup

I have been racking my brain since last night and all morning with this problem...luckily it's not in a production environment yet. I have done many searches and have come up with the same responses ...
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0answers
38 views

How to monitor DNS server activity on a Cisco router?

I have a Cisco 887 router (running IOS 15.4) which also acts as DNS forwarding server for a small network: ip dns server ip name-server A.B.C.D Is there any way to log/monitor/debug the DNS queries ...
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2answers
493 views

Retrieve Information from Cisco router in Parsable Manner

I'm trying to write a script that will pull configuration files over SSH from Cisco routers and parse them, so I can ensure that they meet predefined standards (e.g. password shouldn't be "cisco"). ...
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165 views

cisco vpnc + how to disable the IPSec ID and IPSec secret

I use the vpnc in order to open vpn connection against the customer in the following example I run the vpnc and get error about "hybrid" so according to some site they suggest to remark the line ...
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1answer
195 views

Cisco ASA 5540 multi-WAN and QoS setup

What is the best way to configure the following on a Cisco ASA 5540? I have 2 WAN lines, I need mail (tcp 25) on the one and all other traffic on the second WAN line. On the second WAN line I need ...
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3answers
3k views

How to Enable Ports 25 - 28 on a Cisco Catalyst 3750

I am trying to enable ports 25 - 28 on my 28 port Catalyst 3750. These four ports are my fiber ports. I am using the following command to bring up that interface. interface range Gi1/0/25 - 28 That ...
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4answers
276 views

cisco parse show command

I want to write a perl script which logs into cisco switches via telnet and parses the output of show mac-address-table. The problem is that different switches show me a different field layout. The ...
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2answers
493 views

How to recover from cisco 3750 console lockout if the login method is set to login local but no local usernames are configured?

I have two 3750G stacked and I am locked out of console access. The startup-config console settings are login and local. However, there is no local database, i.e, no username and password is ...
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4answers
2k views

Cisco 7206 error trying to copy running-config (Bad file number)

I have a cisco 7206 that terminates a bunch of pppoa sessions for dsl users. Today I noticed that if I tried to "show run" nothing happened. I mean that it doesn't show anything and just sends me ...
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3answers
2k views

multiple subnets on the same cisco switch port

We have several servers on colocation and now trying to re-organize the network by utilizing Cisco ASA 5505 as a router and Cisco 3750x series switch. Network topology is looking like that: ...
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57 views

wireshark not showing netflow source addresses nfdump does

Hi guys i'm experiencing following issue, hope someone can explain me what's happening. I got a pcap with a dump of udp packets containing netflow data. I've used tcprewrite and tcpreplay to ...
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1answer
461 views

Network load balancing: LACP between Debian & FreeNAS over Cisco Switch doesn't work

My setup: 2 Debian Server, with Bonding 2 Storage Server FreeNAS with Link Aggregation 1 Cisco Switch SG-200 with LAG enabled MTU 9000 enabled everywhere Result: Network performance is still single ...
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39 views

How can I use accounting records on cisco ise authorization?

I'm going to switch from windows NPS to cisco ISE for central authorization on the network. I implemented 802.1x & other needed authentications using it. However, on some points, I need to control ...
2
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0answers
207 views

multiple isp links on a HWIC-4ESW

First, I am not doing fail-over. I want to be able to add another ISP link using a HWIC-4ESW. Equipment: Cisco 3825(1GB ram, 2GB flash, IOS 15.4 Advanced Enterprise services) with HWIC-4ESW ...
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156 views

Transparent Squid Proxy – issue opening a page in Internet Explorer

I set up Cisco Wccp + Squid on Suse Linux Enterprise 11 SP3. Firefox opens our intranet portal pages with no problems. I can see requests to squid. I see cache hits and access in squid log. I see ...