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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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Cisco ASA user authentication options - OpenID, public RSA sig, others?

My organization has a Cisco ASA 5510 which I have made act as a firewall/gateway for one of our offices. Most resources a remote user would come looking for exist inside. I've implemented the usual deal - basic inside networks with outbound NAT,…
Ryan
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Why DELL PowerConnect and Juniper are so rare ? Why do enterprises stick with Cisco?

I have a little question, I'm actually studing IT in France, and when looking on alternative on the very [...] very expensive Cisco equipments, I've found Juniper and DELL PowerConnect pretty attractive on features and price, but I rarely see…
Kedare
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Is there a Cisco IOS Virtual Appliance?

Need to do test configurations on (unfamiliar) Cisco/IOS equipment. Is there a virtual machine I can light up and use it in my test environment as a real firewall/edge/core router?
gravyface
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Cisco 877 as a VPN server?

I have a Cisco 877 router which connects my network to the Internet using an ADSL line, a single public IP address and NAT; the IOS version is 15. Everything is working ok, but I'd like to configure this router to be a VPN server, to be able to…
Massimo
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How do ISPs/Colocation Facilities limit bandwidth for Ethernet Drops?

I have switch providers and have run into some problems with bandwidth limitations. I have more bandwidth then before, but there are performance issues. The router is connected to a 100mBit port, but they limit it to arbitrary settings (in software…
Kyle Brandt
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What is the equivalent of Cisco's 'ip virtual-reassembly' for a Juniper ISG 2000

I tested my dns servers with the oarc test and my size limit is at least 1403 bytes. I performed the same test before my Juniper ISG 2000 and the result is 2047 bytes. According to the chapter IP "Fragments Filtered" and this article, I think I…
2xyo
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Redundant links from Router to Switches

With a setup of two NICs on a server into two different switches where each NIC has a different IP (But both on the same network), and then the switches to the router. How would I configure the two ports on the router to be redundant so that one…
Kyle Brandt
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Cisco PIX 515e dropping IPSEC tunnels to ASA 5505 over time

We have a Head-Office/Branch-Office WAN like this, Server LAN <-> Cisco PIX 515e <-VPN tunnel-> Cisco ASA 5505 <-> Client LAN 1 <-VPN tunnel-> Cisco ASA 5505 <-> Client LAN 2 <-VPN…
nray
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Asterisk ignoring incoming calls with caller id

I have an Asterisk system which has been functioning perfectly well for about six months and now we want to add incoming caller id. We got the service from our phone company; we see the caller ID arrive in the Cisco logs (debug vpm sig). We see the…
jonathanjo
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Netflow Collector for Windows Free

Is there a free netflow collector that I can throw on a windows box?
jimconstable
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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 -c password 1.2.3.4…
Halfgaar
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Do 10GbE SFP transceivers need to match?

I'm looking to connect a Promise SanLink 10GbE SFP NIC to a Cisco 10GbE switch. My general question is whether the transceivers need to match. In other words, do I need to find a transceiver which is both compatible with the Cisco switch and the…
Cornelius Qualley
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Adding a new vlan to a pair of Cisco 4948E that are standby - any pitfalls?

at a branch office, we have a pair of 4948E as the network core. I need to add a new VLAN and haven't done so on these devices before. Here's an existing config on one of the pair: interface Vlan20 description DC-Guest ip address 10.2.80.3…
mfinni
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VMware VDS ERSPAN decapsulation on Cisco Nexus 7k and mirrored to local port

We are setting up a mirror/span/rspan/erspan to get traffic (DC's live as VMs in ESX Cluster) to our Microsoft ATA server. The problem that we are running into is that a traditional RSPAN is not working because all unicast messages are getting…
BillMorton
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Cisco SG200-26 - Can't change management VLAN

I've purchased a new SG200-26 switch and upgraded it to the newest possible version: I configured multiple VLANs - nothing special - however if I try now to change the management VLAN (as I did multiple times for my SG200-8 switches) I simply…
Omegavirus
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