Questions tagged [cisco]

Cisco is a provider of switches and routers to commercial consumers. Cisco devices run IOS or NX-OS operating systems. 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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I am trying to configure a router to be a frame relay (Packet Tracer) [closed]

I am having an error when typing in the command 'frame-relay switching' to enable it at the global config mode FrameRelay(config)#frame-relay switching ^ % Invalid input detected ...
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27 views

->% 192.168.2.0 overlaps with FastEthernet0 / 0

I am working within the Cisco Packet Tracer platform. I made all the necessary configurations but when assigning an IP address to my router, I get the error message in title and I do not know how to ...
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Cisco SG switch interface statistic length of time

I am trying to determine the length of time the interface statistic screen is recording for the bytes columns on my Cisco Sg300-52 switch. I went to the cisco website for documentation but the page ...
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Serial Interface Network Address Decreased by One In EIGRP Configuration In Packet Tracer

I'm trying to implement EIGRP on the following topology The problem is, whenever I assign the network IP to a serial interface in EIGRP, the IP decreases by one. For example, when I use network 197....
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Cisco ACL to block external DNS queries [RESOLVED]

One of the routers that I administer is getting bombarded with external DNS queries from the internet. This is a network border router which has a DNS server configured. There is an interface facing ...
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Using 2FA with openconnect

Currently i'm using the following command: echo 'mypassword' | sudo openconnect -b --reconnect-timeout=15 --interface=tun0 --passwd-on-stdin --user=MYNAME --cafile=example/my.pem --certificate=...
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Cisco IOS ACL to permit inbound

I am struggling to get to grips with the ACL on the 2800 series cisco router. Briefly My topology is R1 > Sw1 > [Server 1, server 2, pc 1] R1 creates a PPPoE connection, that I'm using right now. ...
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Cisco router configuration for pppoe dhcp and nat

I am trying to set up a cisco 2800 series router in my home lab. yes its old, but cheap enough to play around with. So I am coming up against a problem configuring the router. I can ping out to the ...
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Is The Cisco AnyConnect licenses shariable between two low-end ASAs?

I have two low-end Cisco ASA 5506-X with bundled Security Plus licenses. These ASAs are just for remote dial-in VPN access for our staff. Now all users using IKEv2 and IPSec/L2TP (IKEv1) connection ...
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Cisco ISR4431 router randomly reboots

I have a Cisco ISR4431 acting internet edge router that has been randomly rebooting every 5 days or so. When it reboots it takes anywhere from 10-60 minutes before it is back up and network traffic ...
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FreeRADIUS server not replying with AV-pairs after sucessfull 802.1X authentication?

I am having trouble with 802.1X authentication while using FreeRadius server. I am having a Cisco switch which is connected to windows 7 VM. And on the other end, the switch is connected to the ...
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How to configure cisco air-cap2602i-e-k9

I can´t access to Cisco AP by http, I have to configure it. After connect to switch, my router (VyOS) show new IP address IP 192.168.1.61 1c:6a:7a:e2:80:63 2020/04/22 10:14:49 MyDHCPServer AP1c6a....
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Routing policy (control list?) needed for an old Cisco Router

I have a ~15yr old little Cisco 831 connecting a site with multiple networks to the internet. I need to block incoming port-80 (www) and port-443 (ssl) access to one of the internal IP addresses from ...
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Do managed switches ping on all VLANs by default?

Amateur network admin here. I'm trying to create a link via VLAN between a VOIP PBX and an internet router. It's a large installation, so there are 4 managed switches between the two endpoints. I ...
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How do you configure access lists to restrict inbound ports while allowing all outbound traffic on a Cisco 2911 router with NAT?

First caveat: I did not design this network. Most of my recent networking experience is with ASAs; configuring NAT & ACLs there is pretty easy and straightforward. In this case, the engineer who ...
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Cisco Anyconnect failing in windows assigned access user

I'm trying to set up a restricted user using assigned access. This user should only be able to launch cisco anyconnect and remotedesktop. Problem is, that cisco anyconnect creates a copy of ...
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Can't connect VM's brouser to Internet in GNS3

I have a problem with connection Windows VM to internet in GNS3. I want to get access to the Internet from a browser. I've configured nat and dhcp on cisco router. VM can ping 8.8.8.8, but can't "...
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Cisco ASA 5506-X Bridging on same subnet

Is it possible to configure an ASA 5506-x to have both inside and outside interfaces in the same subnet? Our outside interface connects to a VPN and is supposed to act like a point-to-point connection ...
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Authenticating Windows user via Active Directory NPS to remotely access Cisco router (MS-CHAPv2 and/or PEAP)

I have Googled for hours and have not found my answer. I have found information on PEAP and MS-CHAPv2 of course, but nothing for my specific situation (which to me seems like something that should be ...
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127 views

Cisco 4200 WLC management ports down

I hope this is a simple problem, but I can't seem to figure out what's wrong. I went through the CLI setup for my Cisco 4200 WLC, and configured the management interface, and the ap-manager ...
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Determining Sensor Instance Associated with an entSensorThresholdNotification Trap

When receiving an entSensorThresholdNotification trap (CISCO-ENTITY-SENSOR-MIB), how does one determine the specific sensor for which the trap is indicating a threshold crossing?
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Upgrade Cisco ASA 5505 license for SSL vpn peers [duplicate]

We have a Cisco ASA 5505 firewall. It comes with a Basic license allowing only 2 simultaneous SSL vpn peers (AnyConnect client). I would like to upgrade to 10 allowed SSL vpn peers. Any suggestion ...
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Rip v2 doesn't work properly

Goodmorning, i'm a student, i'm using PT 7.3.0 and my implementation of the RIP v2 protocol doesn't work because when i prompt sh ip route to see if works it shows all the connected network... i also ...
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100 views

What Does This L2TP/IPSec Error Mean?

I am trying to connect to a Cisco Meraki VPN that uses L2TP/IPsec. On my side I am using Libreswan/NetworkManager to configure my connection. When I try to connect, I get logs as follows: Mar 02 11:...
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Can you read out the firmware version of Cisco Small Business Switches via SNMP?

I've been trying to get a Network Configuration Manager set up but unfortunately it's having trouble reading out the firmware version and thus, firmware operations aren't possible at the moment. I ...
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25 views

Squid proxy between two firewalls, need iptables solution

At the company I work for we need to implement what I think it's called transparent proxy. How it's now: A(lower secured area)--Cisco ASA-----Cisco ASA----B(higher secured area) What we need: A(...
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Cisco UC560 - how to bypass dial plan and access trunk line

In our UC560 configuration we have 4 FXO ports connected to PSTN lines. I'd like to separate one into it's own trunk and access it from our voip (also Cisco) phones. I've done this, but the only way ...
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28 views

Networking, MST between HPE and CISCO switches

can anybody help with this issue? I have 2 HP Procurve switches 2650 and one Cisco switch 2950 connected together like this: HP MST root (prio 16384) <-> HP IST root (prio 24576) Trk1 <-> Po1 ...
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Ansible and Cisco

I'm new to ansible and I've been asked to provide a mechanism for our support guys (who don't have rights to the Cisco switches) a means to shut/no shut ports. I've googled and I can see how to do ...
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Layer 2 Broadcast filtering on VLAN? (Access ports on Cisco SG-500-52MP)

This is my first time setting up VLANs on a Cisco so I've probably made some mistakes - would appreciate some suggestions. Thank you in advance. ... From my understanding of switches, when a layer ...
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Translate IP address at router

I'm not sure if this is possible, and if it is possible surely it is frowned upon but... is it possible to perform dynamic translation of an IP address on a Cisco 3650 L3 router? Here is the scenario:...
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AJAX POST fails - client sends RST response…why?

Problem We have a web application that is used by many thousands of users. However, since the latter part of Jan 2020, a tiny fraction of clients (but still a significant number) have reported a ...
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Cisco AIR-CAP2702I-A-K9 shutting off LAN ports

We have been constantly having issues with many of our APs disabling the LAN port. We connect projectors and Apple TVs to this port to allow users to mirror their devices. We have noticed this happens ...
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132 views

Cisco switch extended ping

I'm trying to use the extended ping on a Cisco 2960-X switch. It's just plain not working for me! Basically, the whole point I'm using it is to have the source be a specific interface (or IP on that ...
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53 views

Tag/Trunk Cisco 350x

I am pretty new on the networking and cisco world. As far as I learned, tagging is just assigning a port to a vlan, and, as per definition, trunking is assigning a port to more than one vlan I am ...
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41 views

cisco routing with multiple public ips, OSPF and NAT not working as expected

We've got multiple routers in our organisation and i can't get routing working as expected. We have a limited number of public ip addresses which I will call 100.x.x.x/28 We have internal address ...
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78 views

Adding HSRP VLAN to existing config before connecting interfaces

Apologies I am new to Cisco and have inherited two Cisco 9300's with HSRP. There are four existing VLAN's and when setup the switches were not in production. An example config of VLAN1 is below: (...
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158 views

How to change time source from a LOCAL CMOS CLOCK to a Cisco router configured as a NTP master

I have a test network that I'm using for my CCNA. I am using my Cisco 2811 router as an NTP master. I think I have it configured correctly. Is there a Cisco command to see what NTP time source I am ...
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167 views

Ubuntu 18.04: Can't SSH into server's VLAN interface from my Cisco router

I recently configured VLAN interfaces on my relatively new Ubuntu 18.04 server which has two physical interfaces: eno1 and eno2. I have configured them using the netplan utility. My goal is simple: ...
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107 views

How to move multiple, random ports to a vlan on a cisco switch

I'm very new to Cisco networking. We had a Cisco engineer set up vlans on our network switches and then gave us instructions for moving our existing ports to the voice vlan he created. I've moved ...
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23 views

Cisco SG500X 10G-capable SFP+ port up at 1000Mbps

I am not an expert using SFP. I got a Cisco SG500X L3 switch with 4 SFP+ 10G ports. I got 2 mini-gbic HP AJ718A (8Gbps) and 1 fiber (HP 3PAR-10G-10M 850-200029 10Gbps). I plug the fiber into XG1 &...
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48 views

Loopback interfaces is not pinging on both pcs for packet tracer

I am trying to ping my isp ip address (aka loopback 1) and loopback 10 to PC1 and PC2. Whenever I ping both ip addresses and default gateway from pc1 to pc2 it works. However, when I'm trying to ping ...
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31 views

Log in Cisco 2911 using RADIUS

I am trying to login into a Cisco 2911 router called HQ with 193.2.190.16/24 over a RADIUS server (8.8.8.8/24) ISP (193.2.190.1/24 - 8.8.8.1/24). The server has . The HQ and RADIUS ping successfully ...
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407 views

How to setup FreeIPA and FreeRadius for Cisco 4431 Integrated Services Router

I am trying to get my Cisco 4431 ISR to authenticate with FreeIPA, but Cisco devices only have an option to authenticate through Radius. So I am trying to get FreeRadius to talk to my FreeIPA for ...
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47 views

Configure VPN Gateway on Ubuntu VM

First of all, my understanding on the subject is very limited. Im trying to use an Ubuntu VM as a VPN Gateway for my other devices on the same network. The VPN uses the Cisco Anyconnect VPN Client. ...
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2answers
141 views

Does factory reset for Cisco ASA 5505 keep the added licenses/features?

I bought a used Cisco ASA 5505 with existing SecurityPlus (and other) licenses already installed. A factory reset (configure factory-default) from the console will reset just the config and not ...
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27 views

Cisco ISR4431 IPv6IP Tunnel Failling

I'm having problems troubleshooting an IPv6IP Tunnel not starting, I enable debugging of ISAKMP, IPSEC and Crypto Engine and see this problems: *Oct 4 04:00:10.356: ISAKMP (0): received packet from ...
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41 views

ASA5506 VPN Client Blocked

I am setting a new CISCO ASA5506. I am testing a CISCO VPN Client, IPSec/UDP, and it is being blocked. I'm not even prompted for a credentials. The VPN Connection works just fine from another ...
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454 views

How can I auto start up Cisco rack server on power restore?

We have a Cisco C240 M3 v2 server which not auto starting up on power restore. I have been browsing through its BIOS looking for options like 'power on on power restore'. Our office building at the ...
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2answers
257 views

cisco license install tftp no response from tftp server

I am trying to install a license through tftp in the CLI of a Cisco 2504 controller. My computer is a Mac Pro running Mojave version 10.14.6. I have enable the tftp server on my mac. When I do ...

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