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 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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1answer
33 views

Cisco IP Redirection (static NAT?) for non existant IP Range

We are moving office and our managed service provider has let us down badly. We have a Cisco 4500 stack with 5 VLANS configured of interest. These are: interface Vlan200 description FLOOR0 Gateway ...
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1answer
29 views

Update Cisco 3750 for BGP

I have a Cisco 3750 switch that I use at my data center w/ a failover switch as well. Currently getting a blended bandwidth from the data center instead of BGP. From time to time I'll have them update ...
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9 views

Issue Cisco PIM and multicast routing

I'm in the process or redesigning an IPTV headend that is running on mainly layer 2 (IGMP snooping) to layer 3 (Multicast routing using PIM Sparse mode), this will all be done mainly using cisco kit, ...
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1answer
29 views

How would I access a Cisco router for configuration/management over the public internet

I want to connect a cisco router (2950 series) to my normal broadband router supplied by my ISP. I want to test whether I can access the router over the public internet for configuration/management. I ...
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14 views

What is the meaning of off-ramp and on-ramp [on hold]

Title pretty well describes the question I can not find a proper definition for both the terms on-ramp off-ramp in networking world , cisco particularly Can someone please explain to me what they ...
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7 views

Vyatta Nat Rule Help Translating From Cisco ASA Rule

I'm fairly new to Vyatta and need advice on how to translate the following rule example from a Cisco ASA to the Vyatta. static (dmz2,outside) 192.168.254.0 192.168.254.0 netmask/24 How do I ...
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1answer
18 views

VMware systems not working on SRW2048 swtich

I received an old Linksys SRW2048 gigabit switch and have used a straight-through serial cable and the console port to reset the flash config back to defaults so that it is configurable for our ...
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2answers
2k views

SSH login to Cisco switch using Rancid times out

I have a 3560 switch that I have configured to accept SSH logins, and this works fine. However I cannot get Rancid to complete the login process to any of my switches using SSH. I get a timeout error ...
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1answer
1k views

Cisco 1142 AP not joining WLC

I have one an issue that I would be extremely grateful for help with. When I check the AP join statistics I see the following: Reason For Last Unsuccessful Attempt RADIUS authorization is pending ...
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2answers
3k views

massive packet loss when servers are brought online

This is a continuation of ubuntu server, ssh, write failed: broken pipe . I'm starting a new question, because I don't believe the issue is isolated to ssh/ubuntu. I've got two brand new servers ...
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16 views

Cisco ASA 5505 access external IP address from internal

Got a bit of a head scratcher. ASA Version: 8.3(1) ASDM Version: 6.3(1) So I have an ASA 5505 with 3 interfaces (Inside, outside and Hosting). The inside interface has the IP range of 10.0.0.X and ...
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4answers
82 views

CISCO Home Lab Router not NATing [on hold]

I hope someone can help me. I have a AT&T 2wire gateway with a cisco router attached to port 3 of the AT&T 2 wire. I'm using the CISCO as a separate network and lab. Below is sketch of my ...
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0answers
38 views

tcp previous segment not captured when NAT

I have a client request web service on a server behide NAT. My client IP is 10.54.10.193 NAT address: 10.54.28.183 Server address: 62.209.39.203 When client request web service on server we have TCP ...
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1answer
42 views

ASA Site-to-Site VPN Failure

We have a series of remote sites connecting to our main site using site-to-site VPN over Cisco 5505s. Every remote site works fine, except one. What is unique about the failing one is that its IP ...
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11 views

Error: Can't create new inside entry - forced_punt_flags: 0

I have a router Cisco 3725 and setup NAT on this but when I run command debug ip nat detailed it show error "Can't create new inside entry - forced_punt_flags: 0" My router config as follow: Current ...
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2answers
1k views

Avoiding WiFi interference between wireless ISP and our own Point-to-point bridge

We are considering bringing in wireless Internet from a local ISP (802.11b) but we are concerned that our own wireless point-to-point Cisco bridge (1310) might interfere with the ISP link. Will ...
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0answers
22 views

wpa_supplicant doesn't reach freeradius in 802.1x eap-tls wired

I want to setup a 802.1x EAP-TLS connexion with freeradius, wpa_supplicant and a Cisco Switch My network : supplicant eth0-----f1/1 SWITCH f1/0-----eth1 Freeradius the SWITCH is an emulated Switch ...
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1answer
2k views

Cisco - Port's configured trust state is now operational

I am looking at a Cisco switch's log at work and am a bit confused by how verbose it can be at times. For instance, we use automatic QoS here and I often see this when phones are plugged: Mar 18 ...
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3answers
2k views

Cisco ASA config management

I read that for Cisco devices which run IOS, there's a scheduler (kron) which can be used similar to Linuxs cronjobs. I followed the guide on ...
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0answers
11 views

Cisco 3900 Series router not booting

This started after trying to enter password recovery mode and rebooting. It rebooted the one time and started to load the ios but had some sort of TraceBack/Exception on the screen. I reset the power ...
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16 views

Cisco 1000BaseT SFP modules in a 3750 overheating

I have a 3750 responsible for switching in my DMZ. Every once in a while one of the gigabit links will go down although ios and the server attached to it report the link is up (activity lights, etc). ...
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0answers
10 views

Cisco ASA l2l tunnel established, can receive pings but cannot reply

I'm a bit new to managing a Cisco ASA appliance and I'm doing my best to learn, however I got a problem here. Long story short, we are trying to connect a hospital's ADT HL7 feed to our remote ...
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1answer
188 views

UCS FC Adapter Aborts

So here's the scenario, and I'm hoping @Chopper3 can chime in here. For our SAN fabric, we have a pair of Cisco MDS 9513 FC switches with three EMC frames and four Cisco UCS domains directly attached. ...
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1answer
58 views

CISCO - organize NAT with 2 WANs, 2VLANs and failover (using PBR / ip SLA )?

We have a CISCO 800 series connected to 2 WAN channels, and 2 VLANs. The idea is to have VLAN1 always use WAN1 channel, and VLAN2 use WAN2 channel, but in case of connectivity failure switch to a ...
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1answer
45 views

Cannot ping gateway (Intervlan routing)

I have two switchs cisco 2960 (sw-120 and IDF1-SW) and router cisco 1841 (IDF1-R). fa0/24 at sw-120 connected via fa0/7 at IDF1-SW fa0/1 and fa0/24 at IDF1-SW switched to trunk mode fa0/24 at ...
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0answers
8 views

Cisco Split Tunnel AND Full Tunnel VPN configuration

I have split tunneling configured on my Cisco ASA 5505 security plus licensed firewall, and I want to know if I can have a split tunnel group and a separate group for full tunnel traffic? Can both be ...
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2answers
20 views

Eigrp topology table

This is a cisco networking question does Eigrp topology table contains the entire network topology on it's database! I am a bit confused in this, can someone let me know! thank you
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1answer
20 views

Cisco spanning tree commands

I have been immersing myself in the Cisco STP documentation, but for the life of me I am not able to find anything relating to the toppology changes (aka ports logically going down) when certain ...
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5answers
5k views

What are my options in replacing the noisy fan in my Linksys Cisco SRW2008P managed GigE switch?

My first managed GigE switch, the Linksys SRW2008, was a dream, until it started randomly chattering on various ports. That started while I was on the road all the time, which made it take forever to ...
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1answer
6 views

Cisco VSS failure.

We have two 6500s running with VSS. We have a switch with dual uplinks. Each uplink goes to a different 6500. If the VSL between the 6500s goes down then they both become active. This breaks the ...
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1answer
1k views

cisco CUCM 8.6.x configuration export

We currently have a Cisco server running CUCM and cannot get access to the system due to a 'Database communication error' received when attempting a log in to CUCM homepage. Is there any way to ...
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1answer
35 views

Why is my DHCP pool not working?

I'm trying to create a configuration and it's doing most of what I want it to do, but the DHCP pool isn't assigning addresses. Here's the config so far: enable config t hostname xxxxxx enable ...
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1answer
31 views

Remote WOL over CISCO/FW not Forwarding

I'm trying to accomplish a Wake-on-LAN by triggering the two servers' public IP addresses. Internally, the WOL works like a charm (by either the internal or external IP), externally however, it does ...
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2answers
2k views

Unable to PPTP through NAT on Cisco 881

I'm trying to connect to a PPTP server which is sat behind a Cisco 881 NAT router. The server is running Ubuntu Server 12.04 and is running Poptop pptpd as the PPTP daemon listening for connections. ...
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2answers
2k views

Limiting Bandwidth per port Cisco router

Let's say a businessses purchases a sufficently fast internet connection (such as 60Mbps cable connection) and VOIP quality is pretty good for the most part. The only thing I would be worried about ...
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7 views

view the maximum equal cost paths configured for OSPF

How do you check if the maximum number of equal cost paths has been modified (with the (config-router)# maximum-paths command)? Is the only way by viewing the running configuration? show ip ospf ...
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1answer
18 views

Multiple public IPs routed via Cisco ASA to Proxmox VMs

I have a network with IP 199.221.2.136 (/29). I would like the Cisco ASA5505 [1] to work on .137 as router and use two public IPs (.138 and .139) on two VMs on a Proxmox server. Not sure how to route ...
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28 views

Want to Ping/access my Public Ip from Private IP, NAT firewall

One of my server is having private IP x.x.x.x and the Public IP for that server is 1.1.1.1 now when i try to Ping my Public IP from same server its not working, Firewall is NAT enabled. I want to ...
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1answer
5k views

Cisco ASA Site-to-Site VPN Dropping

I have three sites, Toronto (1.1.1.1), Mississauga (2.2.2.2) and San Francisco (3.3.3.3). All three sites have ASA 5520. All the sites are connected together with two site-to-site VPN links between ...
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1answer
1k views

Find client IP connected to VLAN from Cisco Catalyst 3600 by SNMP

I would like to get using of course SNMP, list of client IPs connected to VLAN in Cisco Catalyst 3600. So far, I have pseudo-algorithm made by me which obtains those IP addresses, but I am not sure ...
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2answers
2k views

How can I configure my network to allow bi-directional traffic between two lans?

Here's my current setup: (and it may require reworking): 2 LAN networks - 192.168.41.0, 192.168.21.0 2 Public IP's (they are assigned to us by specifying MAC Addresses - not subnetted) ...
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4answers
3k views

Cisco ASA user authentication options - OpenID, public RSA sig, others?

My organization has a Cisco ASA 5510 which I have made act as a firewall/gateway for one of our offices. Most resources a remote user would come looking for exist inside. I've implemented the usual ...
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1answer
1k views

Remote VPN - two-factor authentication with Cisco ASA + OpenLDAP

Can somebody give me a pathway (or link to the documentation / how to) to implement two-factor authentication (LDAP password + certificate) on Cisco ASA for RemoteVPN (with Anyconnect client)? ...
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1answer
16 views

How do I troubleshoot a VPN connection that won't forward DNS requests?

How do I troubleshoot a VPN connection that won't forward DNS requests? My network configuration without the VPN running works as desired. I have a Centos front-end NAT'ing outbound requests via ...
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1answer
973 views

What's the point of Load Balancing between multiple SSID on the single wireless AP device?

I have a Cisco WAP4410N AP device. Since yesterday, it is supposed to serve a network of about 15 (max 20) clients at the same time, but not all clients will be using bandwidth simultaneously, since ...
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1answer
217 views

Using Windows NPS for Cisco router aaa authentication - is this safe?

I setup RADIUS authentication on a Cisco router and pointed it to a Windows NPS. Now I can ssh into the router my with AD account YAY. But now that I got it working I'm going over the settings to ...
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1answer
10 views

Two network routing with CISCO 878

My company uses the 192.168.10.0/24 subnet and 192.168.10.235 is for all intents and purposes the gateway to the Internet. We have an extra VDSL line with a "home-style" modem/router that we want to ...
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4answers
36k views

Help me understand the 'ip route' command for cisco routers

I just can't wrap my head around it. For example: I want the left-most router to be able to ping my computers on the left and vice-versa. Where would I set up ip route and to what address. I ...
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1answer
2k 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 ...