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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.

Cisco is a provider of switches and routers to many medium and large companies. Cisco devices often run IOS or NX-OS operating systems.

Since Cisco acquisition of Linksys, the consumer line of switches, firewalls and routers (which do NOT run IOS) have been rebranded under the Cisco name.

This tag is a generic tag - Wherever possible a more specific tag related to the product you are using should be used instead. For example:

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2614 questions
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Basic QoS bandwidth for all devices/clients

I have an IP network that has about 500+ clients on the network at any given time. The network uses a Cisco 1941 router as it's gateway, and has 5 different subnets. The network also has 2 DCs, a asterisk PBX server, and farm of 5 exchange servers.…
Kevin
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Azure VPN Site to Site VPN (Azure to Cisco)

I configured a VPN IP Sec tunnel from VPN gateway in Azure to Cisco Router to customer end. created vpn gateway created local gateway config and connected successfully to a cisco router at customer end stood up a VM and connected to a VNET that…
Marko J
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Can not create sub-interface in Cisco CGR 1240

I follow a tutorial, there shows the method of create sub-interface: but in my actual situation, I can not do this: Router(config)#interface gigabitEthernet 2/1.100 ^ % Invalid input detected at '^'…
244boy
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Traffic burst in cascading Cisco switch configuration

I'm using 2 Cisco Catalyst 3850 switches (Sw1, Sw2) and 3 Cisco Nexus switches (Sw3, Sw4, Sw5) as part of my internal network, connected in the manner below (A, B, C, D, E, F represent 10G ports, i.e. A on Sw1 is connected to A on Sw3). The switches…
Rayne
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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 shutdown one of the links from R2 / R3 to R1, I see…
btk_
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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 enter configuration for the ap#config t Enter…
Changer098
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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, so all the equipment has been reset since then. On…
Arheisel
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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 Thanks. http://uupload.ir/files/fqsd_capture.png
user2649382
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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 ( new office) will need a switch. So basically I…
Ferenc Zsichla
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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 router a management IP address. The current router…
Arcass
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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 192.168.35.0/24 and 192.168.42.0/24 pings OK but IP…
morleyc
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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 150.153.0.1 #show ntp associations detail 150.153.0.1…
Ahmed Faraz
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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 remote traffic selector…
Andrew H
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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 forward to port 8080 on 3 different devices (& IP…
ttulinsky
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Can't ping outside IP address

Our firewall is Cisco ASA and our switch catalyst 2960. One computer keeps having the following problem : Once for a while (in one or two days), the computer can't ping outside IP address like 4.2.2.2 and 8.8.8.8. The computer can ping inside…
chicagotech
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