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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1answer
44 views

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

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 ...
2
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0answers
228 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 ...
0
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0answers
44 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 ...
0
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0answers
44 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. ...
0
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0answers
146 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. ...
0
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0answers
296 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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1answer
263 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 ...
0
votes
1answer
106 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 ...
1
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9answers
44k 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 ...
0
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0answers
63 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
2k 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 ...
0
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0answers
156 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 ...
0
votes
1answer
57 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 ...
1
vote
1answer
251 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
46 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. ...
0
votes
1answer
480 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 ...
1
vote
1answer
7k 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
votes
3answers
388 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 ...
0
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1answer
277 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: ...
0
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0answers
53 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 ...
0
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2answers
5k 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 ...
1
vote
1answer
70 views

Allow only one call on CIPC with multiple lines

I have CUCM 7.1.5 with a lot of CIPCs connected to it. Each CIPC has 3 directory numbers (for example 107, 207, 307) and incoming call can arrive on any of these lines. I have managed to allow only ...
0
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0answers
163 views

squid3 wccp2 setting up gre tunnel from squid proxy to router

I am trying to setup a gre tunnel between a squid 3.1 proxy on linux debian, and a cisco router. I want to have web requests to port 80 to pass through the proxy first. I have created a gre tunnel ...
5
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2answers
3k views

Configuring Frame Relay using a Switch Simulation - Packet Tracer

I have the following set up in Packet Tracer: I am trying to configure frame-relay between the RTR-EDGE router, the RTR_ENG router and the RTR_SAL router using a frame-relay switch simulation (the ...
3
votes
3answers
16k views

how to get interface traffic snmp information for routers ( cisco, zte, huawei …)?

I have cisco, zte, huawei routers..How can i get the traffic information of every interfaces of these routers. I donot have mib file of zte and huawei. So, i want a generic mib file which can monitor ...
0
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0answers
62 views

DNS options on Cisco switch providing DHCP

At the company work for we decided to move DHCP duties from a Windows server to our 3750-X switch stack that's the gateway for our network. I researched the commands needed and cobbled together the ...
4
votes
2answers
258 views

Cisco NCS - how to mass update AP settings

we have a NCS (Cisco Prime Network Control System) to monitor our wireless network. To update AP names and location i have to search for the ap mac address in the web interface, and configure them ...
0
votes
2answers
3k views

Ping from a PC to a Switch - beginner

I new to Cisco networking. I am trying out a simple Network. I connected 3 PCs to a Switch. PC A --> VLAN 10 ip address of PC A 100.100.100.3 PC B --> VLAN 20 ip address of PC B 120.120.120.3 ...
1
vote
1answer
207 views

3750s not logging mac address changes?

I have enabled mac address change logging on my Cisco 3750s but I'm not getting any results. What am I missing? I've moved hardware a couple times and set up a couple new VMs with totally new MAC ...
0
votes
1answer
49 views

Completely block access to Cisco

There is Cisco Catalyst 3850 (WS-C3850-48T-E) which is managed only via management port. There are several VLANs on the switch. Also the switch works as a DHCP server. SNMP & SSH are already ...
0
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1answer
164 views

RSVP on Cisco, Understanding and basic configuration

I'm looking for some help about a basic configuration and use of RSVP QoS into a Cisco router (2901 series). Since I have no luck using RSVP into my main network, I have tried to make it work in a ...
0
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0answers
61 views

Reduce Bandwidth on a cisco router (Cisco 877)

PS:Sorry for my english i'm french so i'll try to write the best as I can. I looking since a few weeks now for a command to reduce the bandwidth on a cisco router. I done try a lot off command and ...
0
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0answers
60 views

Freeradius and Cisco. VPN client public address attribute

Once again I am here with a FreeRADIUS question. I use RADIUS for authentication of my IPSec clients and the NAS is a Cisco router. I want RADIUS to be writing not only the NAS IP address into the ...
0
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0answers
142 views

How can I allow NAT from inside to outside and vise-versa when each of my clients will have only one static public IP using an ASA5525-X?

My network topology is pretty basic. My data center provides a router and added a switch just before my cage to provide connectivity to all of the racks. My rack takes the copper drop they provide and ...
0
votes
0answers
131 views

ASA failover mode switching from Active/Active to Active/Standby

We have two ASAs with failover set to Active/Active. This seems to work fine for everything we do except using VPN connections. It seems whenever the primary ASA fails over that all VPN connections ...
0
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0answers
85 views

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 ...
0
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0answers
36 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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votes
1answer
120 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: ...
1
vote
2answers
232 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. ...
0
votes
1answer
260 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 ...
0
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0answers
26 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 ...
0
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0answers
64 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 ...
4
votes
1answer
95 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 ...
1
vote
1answer
239 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 ...
0
votes
0answers
29 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 ...
0
votes
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 ...
1
vote
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 ...
0
votes
0answers
47 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) ...
0
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0answers
49 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 ...