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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2629 questions
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Cisco ASA5510 Bandwidth Shaping/Limiting

This question is in two parts: Shape How can I limit the bandwidth on a ASA5510 to less than 10Mbps? Currently I have: policy-map shape_policy class class-default shape average 9000000 36096 ! service-policy shape_policy interface outside But when…
lpfavreau
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Hubs/switches taking out switches?

Here's the issue...we have a network with a lot of Cisco switches. Someone plugged in a hub on the network, and then we started seeing "weird" behavior; errors in communication between clients and servers, or network timeouts, dropping network…
Bart Silverstrim
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Best way to improve resilience?

One of the major projects I have lined up for 2010 is attempting to mitigate some of the Single Point of Failures (SPOFs) in a network I currently manage. We currently have a single datacentre rack containing a couple of dozen servers. Inside the…
Tom O'Connor
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Setting spanning tree link "priorities" in Cisco switches

I've got a pair of C2960G-48 switches (running IOS 12.2(46)SE, if it makes a difference) with redundant trunks in place. On these switches there are a bunch of VLANs that carry quite heavy traffic at times (enough to completely saturate the trunks…
womble
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How can I connect to a cisco switch via serial console cable from powershell?

I don't actually need to perform any operations on the switch. I just need to verify it's there. I have some remote servers that I need to verify have the blue serial console cable hooked up correctly. Rather than RDC into each of them and…
MathewC
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How to troubleshoot a MAC flapping between switch ports. (Cisco)

I'm working on a rather small Layer 2 network segment that contains a physical loop. (I have included a picture of the topology below). The core switches are stacked 3850s. The other switches are SG300 series small business switches. The links…
blacklight
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Monitor BGP connections

Do you know any special software for monitoring BGP peers, prefixes, log their failures, prefixes amount and etc? (Cisco) ( Not zabbix, nagios and etc, i know that you can write plugins or work with snmp, but I am searching for already written…
TiFFolk
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Site to Site VPN between CISCO 2921 and Sonicwall NSA 3600: NO_PROPOSAL_CHOSEN

I have CISCO 2921 and Sonicwall NSA 3600. I am trying to setup Site to site VPN. I am getting: Received notify. NO_PROPOSAL_CHOSEN in Sonicwall logs and the VPN is not setup. It looks like the phase 1 is OK as I am getting: Info VPN IKE IKE…
Kocur4d
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Possible to have DHCP hand out different DNS server address when using different tunnel?

We have several ASA 5505 deployed. Currently, we have a setup where the local ASA is answering DHCP queries and is configuring clients with two DNS servers: our DR site DNS server (we use AD) and a public DNS. We need to give clients access to "the…
brandeded
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What is "Cisco STG" and why would it dynamically replace a wildcard certificate on port 5061?

I have a lync client that is connecting to a Lync Edge server on port 5061. I get an invalid certificate error when connecting. When I run wireshark, during the TLS setup, and inside the certificate I see an unexpected issuer with an RDN sequence…
makerofthings7
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Retrieve Information from Cisco router in Parsable Manner

I'm trying to write a script that will pull configuration files over SSH from Cisco routers and parse them, so I can ensure that they meet predefined standards (e.g. password shouldn't be "cisco"). Connecting to the routers and running commands…
ahjohnston25
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How do you NAT Hairpin in IOS 8.3+

As I asked here and duplicated here it appears NAT Hairpinning is the answer I'm looking for to allow internal servers to loopback through the ASA to access external IP's (without using DNS Doctoring). However, the instructions presented in those…
Novox
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What's the difference between a Cisco 7613 Router and a Cisco 7613 Chassis?

I see both names referred to in the manufacturer's literature. Is one part of the other? Are they both the same thing? My reason for asking is that I'm trying to standardize an organization's system list, and I'd like to be consistent in how I name…
John
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Cisco console, USB and RJ45?

I have a new Cisco 3750X switch and I want to connect to it via console. Only.... this switch does not have a DB9 connector on it, its Serial port is RJ45. I have a USB to RJ45 cable, and am on Windows 7, but cannot seem to get Putty or other…
jeremy
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Difference between trunk and tagged port

I am reading some wikipedia articles and RFC 5517, studying VLANs, and I don't recognize the difference between a trunk port and a tagged port. From what the material I am reading says, a tagged port is used to allow a host to be seen from…
Ramy Al Zuhouri
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