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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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8 views

Python 3 Script delete old or unused IOS files

I am want to develop a Python 3 script that I can use to clean up old Cisco IOS image files (bin files). A major issue for me is there is more than one bin file. Secondly, I do not want to delete the ...
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1answer
15 views

OSPF - default-information originate : multiple routers

I receive a default route via iBGP from R1. On both R2 and R3 I have default-information originate configured. On R4 I only see one default route in the OSPF database; either to R2 or R3. When I ...
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0answers
9 views

How exactly wifi controller manage users between access points?

There are a lot of WiFi controllers on a market. And I think all or most of them work the same way. One of the important features of the controller is that they somehow make it possible for users ...
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0answers
21 views

Cisco 2901 copy running config timed out error

I am trying to copy the running configuration from a Cisco 2901 onto my PC to have a backup copy in a text file. I am connecting to the 2901 using PuTTY. Using the command copy tftp run I try to ...
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0answers
25 views

Cisco AIR-CAP702W-K9 enable lan ports

The 702w's have four LAN ports which are disabled by default. I'm trying, on the autonomous image (15.3(3)JAB), to enable the ports. I've tried following the official guide from Cisco, but fail to ...
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0answers
17 views

List all p2p interfaces in Cisco nexus

I am trying to list all p2p interfaces in a Cisco nexus device, but I cannot find the command. I have tried to look at the command reference but it does not show any p2p interface command. I have used ...
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0answers
17 views

Two ISPs for two different VLANs with CISCO ASA

I am deploying a CISCO ASA 5506X as part of larger network segmentation and cleanup to improve security. Currently we have two SOHO routers connecting to two different ISPs. One handles strictly ...
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0answers
22 views

Cisco SNMP vmVlan OID result

I sent vmVlan (1.3.6.1.4.1.9.9.68.1.2.2.1.2) OID to a Cisco 3750 switch. This is list of vlans: Take care of interface FastEthernet 2/0/45 - 48. These interfaces isn't in response list of vmVlan. ...
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0answers
12 views

Is there an easy way (via CLI) to identify the WLC an AP is connected to?

this is my current situation: In our Company we use Cisco Acess Point and Wireless Controllers in various Countries. Due to a license-shortage we have more and more APs registered to WLCs in different ...
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0answers
22 views

Windows Server 2008 - Strange Network Connectivity (Firewall)

So we had a network outage last week for a few hours and it caused windows server 2008 r2 to be showing 'no internet' with a yellow exclamation mark. The server has 2 interfaces (on same network), ...
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0answers
13 views

ASA same-security level (or now) and access lists

On ASA I got two interfaces with same security LAN, and LAN2. I want only specific traffic to pass from LAN to LAN2. Let say that I want to pass 10.0.0.0/12 but block 172.16/12. How to achive this? ...
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1answer
50 views

New computers can't connect to the network

Good Morning, We have a business environment in which we have 3 Cisco 3850 PoE stacked and We manage our DHCP through our DC server. Last weekend our UPS had a failure and switched off all outputs, ...
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0answers
57 views

Cisco Bridge and MAC address blocking

I have two locations connected with two Cisco 861 routers. They are connected using a bridge. The subnet is the same 192.168.100.x.The routers are on E-line connection from provider. Location A is ...
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0answers
31 views

WCCP Active/Standby Cisco 6500 & Bluecoat ASG

We are implementing Blue Coat ProxySG-200 to do HTTP and HTTPS accelerations, interceptions, and web content caching/filtering based on WCCP mechanism. We have redundant Catalyst 6509 doing Layer-2 ...
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1answer
44 views

DHCP snooping - my clients dont get ip from dhcp

Why the PCs don't get ip from Core switch Dhcp pool? without dhcp snopping there is no problem, but when i enable dhcp snooping clients stoping to get ip from dhcp. This is my topology: topology ...
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0answers
33 views

cisco ASA/vpn configuration

The client has a site to site VPN connecting two offices and Remote Access VPN to access each office. When owner uses VPN client establishing connection to one of office (OfficeA), he can't RDP to the ...
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1answer
100 views

Connecting two 1Gb switches 100ft apart via 10Gb SFP

I need to connect two suites in the same building that will be about 100ft from data room to data room. Suite #1 has a 1Gb switch and our various servers etc are connected to this switch Suite #2 ( ...
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0answers
24 views

Cisco Serial Connection issue

So I have been trying to get into my Cisco switch without the password, which involved power cycling the switch and pressing the mode button, prior to doing this I was able to type in Putty console ...
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0answers
24 views

Sonicwall, Cisco SG200 Vlans

Hoping someone can shed some light on my lack of Vlan knowledge. My current setup is as follows... NSA 2600 Sonicwall router 3 Cisco SG200 50port POE switches (let's call them Switch A, B, and C) ...
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2answers
123 views

Monitoring for most recent version of Cisco Adaptive Security Appliance (ASA)

How does one automatically check if your Cisco ASA is running the most recent or non-vulnerable version with external monitoring? With SNMP, you can get the version number of an ASA: $ snmpget -v2c -...
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0answers
25 views

Cisco Catalyst 3750G series PoE-48 - Private VLAN

I'm working on a Cisco Configuration for the first time and I've run into a problem where the Vlans do not appear to be working correctly, the ports on the switch should be configured to the ...
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0answers
46 views

How to configure a management IP address on a router on a stick?

I'm setting up a simple Router on a stick following this tutorial (https://www.youtube.com/watch?v=2_xpsk-uRug&t=338s) The actual routing part works fine, however, I'm struggling to assign the ...
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1answer
923 views

ASA Can ping between subnets, but not pass IP traffic (access rules in place, security levels ok)

I have tried getting my ASA to route traffic between subnets, i got it working for 10 minutes but after some changes (unfortunately not an ASA expert) i have broken something. One example is 192.168....
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0answers
119 views

Cisco CIMC “forgets” settings on power loss

I have a Cisco UCS C200 M2 server, and CIMC forgets every setting(which NIC to use, IP settings, admin password, etc)when the server is unplugged. I replaced the CMOS battery on the motherboard, and ...
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1answer
44 views

Unable to configure NTP on Cisco Switch ws-C3560x-48p

I want to sync time of Cisco Switch (ws-C3560x) with AD server. After following configurations the time is not synchronized. Pl guide. #show running-config | include ntp ntp logging ntp server 150....
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0answers
188 views

VPN Tunnel - Crypto map policy error

Good day! GCP reports the following error: The peer gateway notifies: Proposal mismatch in CHILD SA (phase 2), Please look at peer logs. On the ASA 5505 side I'm getting: Map Policy not found for ...
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0answers
47 views

PFSENSE Topology w/Cisco L3 Switces

I have the need to configure a router on a stick variant where I have WAN in (not shown on image) and 2 LAN ports that go to each of the switches shown in the image. The vlan 'subinterfaces' live on ...
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1answer
47 views

cisco RV325 how to port forward to 3 web servers same LAN

I have 3 devices on a LAN with local DHCP addresses and they both have web servers on port 8080. I want to access them from outside the LAN. I want to have 3 ports on the WAN side of the router ...
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0answers
33 views

Ansible ios_l2_interface Error - Does not recognize interface as Layer 2

when I execute the ios_l2_interface module against a Cisco (IOS 12.2(55)SE) switch I get the following: ansible all -m ios_l2_interface -a"name='FastEthernet1/0/19' mode=access access_vlan=1" -i ...
1
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1answer
114 views

Cisco 3850 All ports turns amber when SFP inserted

We have replaced old 3750 switches with WS-C3850-24T (Qty:2 in stack mode). Whenever I insert any SFP module to connect our different depts, all ports turns amber for few seconds, during this phase ...
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1answer
67 views

What is the correct way of enabling 300mbps on a cisco 3502i?

OK... I have a Cisco 3502i (AIR-CAP3502I-A-K9) radio in autonomous mode with ap3g1-k9w7-xx.153-3.JF5 firmware and I have been trying to get the 5.8 GHz radio to switch over to 300 Mbps support. So ...
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1answer
110 views

ASA can ping but not computers

I just setup a new ASA 5506-X. From the ASA I can ping outside and inside. However inside computers can't ping outside ip, for example 8.8.8.8. Tracert 8.8.8.8 are all timeout. Here are the ...
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1answer
28 views

VM VPN failover

I have a VPN connection from Network1, Host A (VM) to Network2, Host B and Host C. An application in the VM(Host A) is statically configured to communicate with Host B on Network2, i want Host A(...
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0answers
51 views

Cisco 887va VDSL2 with public static /29 net and 2 vlans

I've a working config that allow internet traffic trought a firewall that is direct connected to 887 fa3 (vlan2 - public ip). Now I would to connect a "guest" wireless network that has to bypass ...
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2answers
2k views

Cannot ssh into cisco switch: Invalid key length

For some reason I cannot ssh into a Cisco Catalyst C3750 Switch. This is the error message, that I get: ssh_dispatch_run_fatal: Connection to 192.168.7.6 port 22: Invalid key length This is the ...
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2answers
27 views

how to configure network in cisco routing and switching?

I am working at hotel and resort, and I want to build network for the hotel using cisco router and switch. the hotel customers number is up to 100 per day and there is 50 rooms. but i want to know ...
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0answers
46 views

Cisco IOS Switch Native VLAN

I have a Cisco switch (2960x) that connects a wireless access point to the network. It has 3 SSIDs, 1 that is forwarded on the native vlan (untagged etc) and 1 (guest network) that's forwarded tagged ...
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0answers
48 views

Two Cisco routers connected through BVI (Bridge Group Virtual Interface)

I have two Cisco 1921 routers which are now connected with VPN Tunnel. Now I want to connect them with a BVI (Bridge Group Virtual Interface). I have a dedicated link from my carrier. My problem is ...
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0answers
34 views

Cisco ASA Failover/Failback doesn't work as expected

I have two Cisco ASA with Active - Standby configuration. At first, active and standby device's failover status are like this: ASA-A : Primary - Active ASA-B : Secondary - Standby Recently, there ...
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0answers
158 views

Configuring UniFi APs on VLAN with pfSense router, Cisco switch and Allied Telesis switch

We are trying to deploy 10 UniFi AP-AC-LRs in our network and need some assistance. Below I will try to give a precise overview of both our setup and our goal. Please ask questions if anything is ...
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0answers
58 views

Cisco SSL inspection TLS error

I'm running a network with a Cisco FirePOWER managing all traffic monitoring. I have it configured for SSL inspection which is working very well. However, users are complaining that sometimes when ...
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1answer
44 views

Cisco AnyConnect disconnects when prompted by UAC

I have a secure network configured with Cisco AnyConnect SSL VPN and Cisco ISE for authentication. (VPN head is a Cisco ASA, AnyConnect v4.5, ISE v2.3) The client VPN works perfectly except when a ...
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0answers
66 views

dnsmasq not responding to Cisco tftp broadcast requests (tftp://255.255.255.255/network-confg)

I'm trying to automate a Cisco router basic initial config. During the initial boot, these routers attempt to pull a network config via TFTP from 255.255.255.255, but this is failing: %Error opening ...
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1answer
32 views

DHCP configuration for WAN

I'm unsure exactly what I'm asking for here, which makes it difficult to search so please let me know if it has been answered before (I'm sure it has). Current config is a DHCP server hosted in a ...
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1answer
33 views

Cisco 1841 Dual WAN (Failover) + OpenVPN

I can setup Dual WAN in Failover mode on Cisco 1841 however I can't seem to get OpenVPN working. I need both WANs to use OpenVPN but can't seem to find any guides on the internet. Any ideas?
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1answer
15 views

Buisness NET - Transparent Content Filter

I am designing a network for a corporate company and would like some advice on a firewall/web filter to use that is free for HTTP and HTTPS. The main network is gonna cost a bomb so want to use a ...
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1answer
44 views

Force proxy for non domain computers

So I have had extremely bad results with bridged firewalls so have decided to create a standalone proxy, the pc's on the domain get the proxy by default and their internet access is then filtered. All ...
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2answers
92 views

How does a client choose between two DHCP servers in the same network?

I read on netacad that there may be more than one DHCP servers in the same network and I was wondering, how does the client choose between them? Does the client choose the one that sends the ...
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0answers
217 views

Pfsense transparent vlan trunk

So I have a pfsense transparent firewall, between my cisco router and first switch both the switch and router interfaces facing the pfsense are trunk ports: CISCO ROUTER - 10.10.1.253 ↓ PFSENSE - ...
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1answer
30 views

Cisco Switch - Telnet enable password

I would like to setup my cisco 3750 switch such that: I can connect via serial cable with no password, then can "en" with no password I can connect via telnet, and I am prompted for a password, then ...