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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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How exactly does vlan traffic flow through a layer 3 switch from one vlan to another on a default route?

I have an office that has a layer 3 Dell switch in routing mode connected to both a Cisco router & a Dell Sonicwall. The network has Vlan 1, 10, and 20. The connection to the internet sits behind the Sonicwall. The connection from the layer 3…
cabotek
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Tyring to figure out ip-route

I've been playing with packet tracer and trying to fully grasp ip routing. So far I'm doing ok i think. Why am i able to ping r3 from pc1 (route working correctly as it should) vice-versa but cant ping r3 from r1.
kwapster
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About duplication IP Settings on Cisco L3 Switch

I set up the IP for Cisco L3 switch, but why is the error only eth 1/2 even though there is an IP duplication as shown below? SW(config)# SW(config)# interface mgmt 0 SW(config-if)# ip address 192.168.1.1/24 SW(config-if)# no shutdown SW(config-if)#…
dum0785
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I want to display UPDOWN message of interface on Nexus

The unit exam of Nexus is underway. Like Catalyst or IOS "* Oct 6 08:29:28:% LINK-3-UPDOWN: Interface GigabitEthernet 1/2, changed state to up" I thought I would get an UPDOWN message for an interface like this, but it is not displayed. Is there any…
dum0785
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Same VLAN, multiple interfaces on PIX?

I'm already pretty certain this is impossible, but it's at least the second time I've found myself in this situation and really wishing it could be done, so if for no other reason than to save others the time I've spent in the past looking at…
Nicholas Knight
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Cisco mds zoning

I am in the process of setting up an MDS fabric swicth and was wondering what the recommended best practice is for zoning? Is is single target single initiator based or single initiator multiple targets?. Our SAN array controller has 8 storgae ports…
wildchild
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Change configuration of a cisco pix 515 via SNMP

I have a cisco pix 515 as firewall for some web servers. What I want to do is to automatically add banned ips to the firewall to block traffic at the network level. At the present time I have a software hooked on the web server software, monitoring…
user23758
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configure interfaces in CISCO XRv 9000 ( kvm Environment)

I have set up cisco XRv 9000 in KVM Environment.I allocated 3 interfaces in xml file.
Debugger
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TCP Retransmissions when packets exceed 1500+

I am currently trying to communicate using NMOS protocol over my network. This is a /30 network. The issue I am seeing is that when I send an http request from my computer to my device over the network the response will be "lost" if the packet size…
RAZ_Muh_Taz
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Unable to establish GRE tunnel between linux-based instance and Cisco Router

I would like to establish a GRE Tunnel connection between a Cisco CSR1000v and an EC2 instance that runs Ubuntu 18.04.02 LTS Linux 4.15. In R1 CSR1000v the configuration is the following: interface Tunnel99 ip address 10.10.10.2 255.255.255.0 …
Khalil Mebarkia
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how to take backup of the MDS 9000 series switch configuration

How do i take the backup of the MDS series switch .Like after doing the Zoing and activating the zone set.How do i save my changes done so that there is no impact in the production in case of any wrong zoning?? Will appreciate if somebody can tell…
wildchild
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Verizon VPN to AWS VPC

I was wondering if Verizon can terminate their VPN to AWS VPC ? Our existing setup has Cisco Router (CSR1000V) running on EC2 instance and Verizon VPN is terminated on the public IP of the EC2 instance. That's how the Verizon traffic enter AWS VPC.
roy
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Cisco Catalyst - plugging in a switch on an access port take down a far-away port channel

I have made a diagram at this pastebin - basically i have a production network with a pair of 6840 as my core (VSS), it has port channels to various systems. I do not use any routing protocols, VTP is set transparant across the board, and rapid…
Stokkeland
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Grok filter for Cisco ASA

How can i get port from cisco ASA syslog using grok pattern. I have tried some methods and its not working . We are using graylog for collecting log data. Eg Log : %ASA-6-301014: Teardown TCP connection 1846898154 for Vodafone:107.23.89.178/443…
James Arems
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policy-map apply using Linux Centos

In Cisco i can found this object-group network XYZ 10.10.10.0 255.255.255.192 object-group network ABC 10.10.11.0 255.255.255.192 class-map match-any C-XYZ match access-group name XYZ class-map match-any C-ABC match access-group name…
Tariq
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