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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2answers
873 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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2answers
22 views

How can I use SSH to run Cisco IOS commands in Global config mode?

I know about Kron, but there is supposedly no way to run global config commands: http://www.techrepublic.com/article/schedule-commands-with-cisco-ios-kron/ If I connect using Putty, Putty is able to ...
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0answers
33 views

Custom OS / Kernel on switch hardware (Cisco, HP, ExtremeNetworks) for testing OpenFlow [on hold]

I'd like to test OpenFlow on hardware, I thought on two switches with at least 5 physical Ethernet ports. I don't want to buy a ton of NICs and two standard motherboards just for "imitating" a switch, ...
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votes
1answer
5 views

snmpv3 EngineID for Traps in net-snmp

I'm trying to collect simple logs from Cisco devices using netsnmp with SNMP v3. I can get the messages to appear in my snmptrapd, but I have to manually add the EngineID to for them to talk. E.g., ...
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2answers
979 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. ...
4
votes
4answers
2k 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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2answers
6k views

iPad connections to Cisco VPN error — “Enter your user authentication”

Is anyone else having problems with the iPad IPSec (Cisco) VPN configuration? I've configured a Cisco VPN connection to a PIX 501 firewall on a 32GB Wifi Apple iPad. This is done in Settings -> ...
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1answer
28 views

Cisco 2901 - IPSec VPN Maxing CPU

We have a Cisco 2901 on the edge of a 100Mbps/100Mbps WAN link which is providing an endpoint for an IPSec VPN to a Juniper SSG 550M. The problem is that we are seeing a max of 'only' 40Mbps over the ...
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votes
2answers
1k views

Setting up VPN on CISCO ASA with private IP on outside interface

I am trying to setup our ASA 5510 to allow IPsec(IKEv1) access to the inside network through VPN. The hard part about our setup is the outside interface does not have a public IP address assigned to ...
0
votes
1answer
25 views

Virtualized Linux firewall as router on the stick for cisco switch

I have got: Linux(virtual maschine on esxi) <---trunk---> cisco Switch. On virtual maschine vSwitch setup: VLAN ID 4095 Enables trunking on port group (VGT Mode) LINUX interfaces file: ...
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1answer
1k views

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 ...
0
votes
1answer
10 views

openconnect on startup at debian wheezy through ssh [on hold]

I am trying to connect to Cisco vpn using open connect. I can do it with the terminal where it asks for my user and pass. However, is there any method for automating this on login.
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0answers
22 views

What's the most efficient way to test a new config on Cisco 871?

I'm troubleshooting random connection problems and I've received some suggestions at the Cisco support forums. I thought to make edits to a local file and upload, but then I recalled the instructions ...
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0answers
67 views

VLAN setup Cisco SG300 and SIP gateway

Hopefully someone can shed some light here. I'm quite new to networking and not too sure if I'm doing the right thing here. We are setting up a new VOIP phone system with SIP gateway for our company. ...
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0answers
47 views

Cisco “show archive config diff” displays crypto pki

I have a Cisco WS-C3560G-24PS. We're going to make some changes to it, so I ran the command show archive config diff to make sure everything is fine if we need to revert the changes. My problem is ...
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3answers
994 views

How to block external access to the DNS service running on a Cisco router?

I have a Cisco (877) router acting as the main gateway for a network; it has a DSL connection and performs NAT from the internal network to its external, public IP address. The router allows SSH ...
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votes
1answer
30 views

How do I allow data to span from port to port on a Cisco ASA

I'm running a Cisco ASA5520. I could have sworn I had this set up when I installed the system and checked the right boxes in the "Wizard" in Cisco's ASDM, but data only goes from port to port if it ...
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0answers
19 views

Cisco SG300 switch does not send RADIUS messages to server for 802.1x

I want to eventually configure the SG300 to authenticate wired clients with 802.1x and Microsoft NPS (RADIUS). I am currently testing this setup using a single port (Port 7) on my SG300, a test ...
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0answers
10 views

Cisco 7921G IP Phone not working

Got my hands on a second hand 7921G wireless IP phone. It should be configurable via USB; but need drivers to do that ...
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0answers
7 views

SRP521W Intervlan routing and NAT

I've a Cisco SRP521W router which I've set up with two VLANs called normal_Lan and SWSVLAN. I don't want devices on each VLAN to communicate with each other so I've turned INTERVLAN Routing OFF. ...
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0answers
15 views

Cisco 2901 Inbound NAT with local IP overload

Overview We are replacing a Juniper SSG on one of our networks with a Cisco 2901. Everything has so far been quite smooth except some issues have come up with external ports needing to be opened. ...
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0answers
8 views

Daily Traffic Caps with a Cisco ASA5520?

I use satellite internet with a 15GB/month limit and I want to implement bandwidth caps of maybe 100MB/day for certain users. I'd also like QoS turned on to prioritize traffic such as VOIP on top, ...
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2answers
742 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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0answers
30 views

Failover configuration on Cisco sf300-24 and two Windows 2008 R2

I have two Windows 2008 R2 server connect to a Cisco sf300-24 switch in customer environment. They provided us two IPs xxx.xxx.40.156, xxx.xxx.40.157 and let these IPs accessible from and to their ...
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0answers
28 views

Cisco SG300 Switch VLAN issue

We've got Cisco SG300 switch (in L2 mode) which we use to extend our network. It's ge10 port is connected to main switch (upper level, connected to different PC and Servers with no issues) and has ...
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votes
1answer
20 views

high cpu usage on 2811 router

there is high cpu usage and high intterupt rate on 2811 router while there is low rate traffic about 10 Mbit. How can i fix this problem. output of sh processes cpu sorted 5sec | exc 0.00 command that ...
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vote
1answer
944 views

Cisco dual static default routes to WAN

I am trying to setup Dual WAN in our office because our single VDSL modem couldnt handle our web traffic any longer. So we now have two VDSL modems (Sagecom FAST2864) they cant go into bridge mode ...
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votes
1answer
34 views

can't ping the GW when configure linux with two vlans?

my scenario: vlan1 <--------> [interface0/1] L3 Switch [interface0/2]<-----------> vlan2 by follow this tutorial: vlan1 have one linux machine: I Configure Linux to have 2 Virtual ...
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9answers
38k views

No Internet access while being connected to VPN using Cisco VPN Client 5

I have an access to corporate VPN using Cisco VPN Client 5.0.00:0340, but when I'm connected to it, I don't have an Internet access. I'm using Windows XP SP3. As it was suggested here ...
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votes
1answer
726 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 ...
1
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1answer
1k views

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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0answers
33 views

How To Stop Cisco ASA Spoof Attack

I have thousands of "Deny TCP reverse path check from 10.60.60.X to 10.60.6X.X on interface outside" The IP addresses for the source and destination hosts are all over the board, and the interface is ...
3
votes
2answers
1k views

How do I find out which physical port my ethersvi MAC address corresponds to on a Cisco switch?

I'm doing a layer2 network map (my first) and this is the first virtual mac I've encountered. From the mac address table of switch1, I have VLAN 1 6416.8d98.52c0 DYNAMIC Te0/1 and on the ...
2
votes
2answers
1k views

cisco router loses configuration on reload even after saving it

I'm configuring a Cisco 3640 and it's not saving simple things like my hostname. I've tried with 'wr' and 'copy running-config startup-config'. Also erased the configuration but no luck. There's no ...
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0answers
34 views

Cisco 887 router as an IKEv2 VPN server?

A follow up to this question. The scenario is exactly the same, but I replaced my 877 router with a 887VA running IOS 15.4. The VPN server configuration works exactly like before, and I can ...
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votes
3answers
778 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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3answers
836 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 ...
0
votes
1answer
22 views

Cisco CGS2520 switch to reveal MAC address when port goes active?

Is there a way to have a Cisco switch reveal the MAC address of a device via Syslog when it is plugged in? I get messages that a device is connected, but there isn't a lot of detail: Sep 9 12:50:51 ...
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1answer
162 views

How to configure remote IP address audit logging for VPN clients on a Cisco 2801

We have a Cisco 2801 that also acts as a VPN Server for Cisco VPN Client. We would like to configure IP address logging so that each time a user connects using VPN we would like to log his IP Address. ...
1
vote
1answer
19 views

Cisco 10GB-T module port duplication issue

I purchased one two port 10GB-T ports network module (C3KX-NM-10GT) for my 3750-X switch stack (4 in the stack). After powering off the entire stack, plugging the module in, re-powered everything. ...
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1answer
816 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 ...
0
votes
1answer
353 views

Configure SIP Trunk from Lync 2013 to Cisco Call Manager v6

I'm implementing Enterprise Voice for Lync, and I have to get Lync to work with a antiquated Cisco Call Manager version 6. The SIP trunk has been created but I get this error on my Lync servers: A ...
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1answer
5k views

ASA's USB ports

I have three USB ports on my Cisco ASA 5505. All Cisco documentation that I've found says that they're for 'future use'. Anyone know if this has been updated? Or if it will be?
2
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3answers
73 views

VLAN planning and questions

I currently manage an environment with IP addressing of 10.10.10.x/23. We have 3 VLANS set up, and I use that term very loosely. The reason I say I use the term loosely is, the 3 VLANS have full ...
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2answers
972 views

cisco ip nat / port forwarding

I have been trying to get port forwarding working with a newly installed cisco router. I cannot seem to find where my fault is and have been looking for quite a while. The relevant section of my ...
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1answer
1k views

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 ...
0
votes
1answer
45 views

Juniper with multiple DHCP pool connected to Cisco switch

Newbie question: In our law office we have the following setup: Juniper SRX connected to Cisco L3 switch via trunk port. Cisco switch has: VLAN 5 range: 10.4.0.10 - 250 /24 VLAN 6 range: ...
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0answers
28 views

Connecting to Access Switches Management Console via SSH

In a typical lab setup: [USER] -> [Cisco 2960X] -> [Cisco 3560X] -> [Firewall] -> [Router] 3560X carry all the internal routing, VLANs and is the VTP server. It has below IP settings: Management ...
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2answers
674 views

error “illegal software format” in upgrade fw .ros file of Cisco Sg200-26 small business smart switch

I own 2 cisco switches small business switches. they are both SG200-26 26-port gigabit smart switches. One has fw ver. 1.0.0.19 , while the other has version 1.1.1.8. I am now trying to upgrade ...
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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 ...