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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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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2answers
28 views

DHCP server does not work with 2 router

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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8 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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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. ...
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0answers
9 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 ...
3
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2answers
29 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"). ...
2
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1answer
19 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
5 views

ISA timeout: no access to web server

we have a dlink switch connected to an ISP modem in the wan interface, to servers and to another switch (connected do hosts). The problem is that when i try to connect to a server connected to thz ...
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1answer
9 views

Cisco 877w - Brindging Dot11Radio & ATM to access the internet [on hold]

I have a cisco 877w router, connected to ADSL internet line, what I'm looking for is to create wifi access point with the DOT11Radio interface so that client can access the internet from their phones ...
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0answers
17 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
46 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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4 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 ...
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0answers
45 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 ...
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0answers
24 views

Cisco ASA 8.2, accessing an internal webserver with an external IP-address together with port translation

We have one web server, let's call it SERVER01. It is running two different web servers that both uses HTTPS, INTERNALAPP on port 443 and EXTERNALAPP on port 444. In a previous setup we had an old ...
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0answers
14 views

Can I Use Different Versions of CME and CUE

I am running CME 8.6 on a Cisco 2811. I would like to install NM-CUE and run CUE 7 with this. It this possible, even with a version mismatch?
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0answers
22 views

Issuing 'ip dhcp relay information trusted' command on a VLAN interface

I was reading this article - Allowing option 82 in Cisco DHCP relay agents. It says As a security measure, Cisco IOS will not forward DHCP requests that contain Option 82 information and a ...
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2answers
225 views

What does 'Si' mean with respect to network switches?

I am seeing references to Multilayer Switches with Si as in the network symbol below. What does the 'with Si' qualifier mean?
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0answers
70 views

Incoming Connections with Two ISPs and Cisco 2911

I am a relatively beginner Networking Guy and I have managed to set up a Cisco 2911 router with two ISPs (no BGP), NAT and route-maps (although I don't really understand them) to the two up links with ...
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1answer
27 views

Cisco Router not displaying DHCP client hostnames

I've got a branch office configured to issue IP address from a Cisco Router (IOS 15.0). The router is successfully issuing DHCP addresses just fine. My questions is that when I issue the command "sh ...
2
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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 ...
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1answer
58 views

can anyone show me how can i fix error with my NAT config

Can anyone help me with my packet tracer problem? My network 2 buildings (each building has 3 vlans) on the same side and it has 2 sides, between is internet. I finish with DHCP and now I try to ...
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0answers
23 views

my cisco 877 has problems to adsl syncing?

I have a cisco 877 modem/router but I have some problems to configure it for my adsl. When I plug in the rj11 cable, the "CD" led begins to blink but it does not stop to blink, imho means it has ...
2
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1answer
64 views

How to install and run Puppet Device in order to configure Cisco Switches and Routers?

According to this documentation it should be possible to configure a Cisco Switch by using the Puppet Module Device. Where could this module be found? Is this module restricted to Puppet ...
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2answers
37 views

Point of Shared Secrets on RADIUS Servers over a Cisco Switch

I was wondering what the point of Shared Secrets are on RADIUS servers if I set the secret in the Cisco switch configuration. If the supplicant wanting to be authenticated does not have to know it, ...
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1answer
69 views

How to configure a Cisco Catalyst 2960 to synchronize with an NTP server

I would like to synchronize a Cisco Catalyst 2960 series switch with a publicly available NTP server such as time.apple.com. I have reviewed the knowledge base article here: Catalyst 2960 ...
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13 views

CISCO SWITCH AND TELNET — 2 [closed]

I need to configure my cisco881 as below after i write "ip address 192.165.1.1 255.255.0.0" the telnet session is disconnected i have ping to 192.165.1.1 but can't access via telnet what should i do ...
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1answer
42 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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0answers
46 views

Watchguard to Cisco VPN

I am trying to setup a site to site VPN. I can see the tunnel is up but i'm unable to ping across the VPN. The other end is a watchguard. Current configuration : 8098 bytes ! ! Last configuration ...
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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.
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22 views

Cisco ASR 1001 RTU licencing - not applying correctly?

We're in the middle of deploying a Cisco ASR 1001 for use with a GRE/IPSec VPN tunnel. Whilst we've got the device we're waiting on e-delivery of the licences however looking at: ...
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35 views

Untangle running on ESXi sending tagged VLAN to Cisco switch not working

basically here is my setup: [Host A] = A hypervisor running ESXi 5.0 [Switch A] = A Cisco 2960-S Series 48 port switch [Switch B] = A Cisco 2960-S Series 48 port switch [P-Router] = *A physical ...
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2answers
38 views

Possible to use a console cable from a Cisco ASA and use it interactively with ESXi?

I'm creating procedures to deploy a Cisco ASA and an ESXi machine to remote locations where no local tech contacts are available. I think it may be a wise idea to connect the console cable from the ...
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1answer
27 views

PoE from 2960 without Layer 1 Connection

I'm attempting to use a Cisco 2960-X (LPS-L) to provide power for a some Nexus 7 tablets (via a TP-LINK PoE Splitter). The issue is that without some actual device connected to the LAN port of the ...
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0answers
18 views

Cisco ASA Access anyconnect from inside IPsec tunnel

I have a Cisco ASA on a dynamic WAN IP with a IPsec site-to-site tunnel to a remote linux host in a datacenter with a static WAN IP. All non local traffic is tunneled and the datacenter end is the ...
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32 views

Cisco ASA 5505: PAT / NAT between 2 IPSec Tunnels

I've the following Setup: Customer <-> HQ <-> Branchoffice The Customer has a 192.168.1.0/24 subnet. On the HQ only the VPN Gateway is in my context, 172.20.10.1 . And on the Branchoffice ...
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2answers
19 views

Can a cisco router execute a command itself?

I'm experiencing a problem with my Cisco router 1900 Series, the router sometimes stop routing packets, and when i log into it and show the running-config i see no ip routing executing ip routing ...
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 ...
1
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1answer
93 views

Network latency caused by incorrect cable?

Our team recently setup a new network and now we are experiencing network latency issues. the flow of traffic is as such: modem -> router -> packet shaper -> cisco3750 switch from router to packet ...
0
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1answer
27 views

RADIUS authentication requests not relayed to RADIUS server

I am trying to set up a RADIUS server for 802.1x NAC over a Cisco IE 3000 Network Switch, using freeRadius to implement it. I know the switch knows where the RADIUS server is because I set up the ...
0
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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 ...
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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 ...
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2answers
101 views

Script SSH to router and “enable” and run commands

I have a script that will ssh to a list of routers and run commands from commands.txt. I want to enable after I connect to the router through ssh before I execute the rest of my commands in ...
0
votes
1answer
33 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 ...
2
votes
0answers
56 views

Why is Router IP Address Repeated in Trace Command?

I have a network that is a branch of our central office. The central office is located in another city and I connect to the central office with a Cisco router using a leased line E1 cable(using ...
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2answers
52 views

Cisco router or Sonicwall hindering our phone systems to acquire DHCP [closed]

We have been battling with our IT Company, who installed the Sonicwall, and our phone carrier, who installed the Cisco router, for 14 days. One of the two is blocking our phones from receiving DHCP. ...
2
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1answer
73 views

Cisco ASA 5510 Out-of-Order Packets to Google

We're seeing a large number of packets being dropped due to being Out-of-Order. The numbers are large enough that it may be having an impact on network performance. We've isolated it down to a few ...
1
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1answer
25 views

Select-object in CISCO IOS

I am very new to CISCO IOS and have little to none experience. I was wondering if there is a way to run a command like show ip interface brief and then select exactly what you want and then redirect ...
1
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1answer
63 views

Config Cisco 2960-X 3 stack switches [closed]

I'm am in the process of setting up 3 x Cisco 2960-X switches in a stack. I've configured Cisco switches before, but this is the first time I will be configuring them as a stack. Will I only have to ...
0
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1answer
45 views

Configuring Cisco 3800 ISR Router with two default gateways for different subnets

I am trying to configure two physical interfaces on a Cisco router to act as two separate gateways for two different subnets: gigabitEthernet0/0 > gw 10.10.10.10 255.255.0.0 for network 10.10.0.0 ...
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0answers
48 views

Configuring a RADIUS server 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 ...