Server Fault Stack Exchange
Server Fault Stack Exchange

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:

, , , , ,

2629 questions
5
votes
1 answer

Stacking 2960 with either 3560 or 3750?

Can a Cisco 2960S be stacked with a 3560 or 3750? If possible how? If not, why not?
AL_alagu
  • 61
  • 2
5
votes
5 answers

Mixing SAN iSCSI Traffic with core network traffic, Am I asking for trouble?

I am configuring a new network and had a couple questions I am finding hard to find good answers about best practices on using VLANs to separate Core network traffic and iSCSI traffic. The switches for the core network are a Cisco 24 port 3560X…
Hunterprime
  • 95
  • 1
  • 6
5
votes
3 answers

Unable to connect on natted server from a host computer on the same LAN using public IP address

I have a server statically NAT’d using a registered IP address and it is accessible from the outside. The problem is I cannot access my server from the inside using the registered IP address with a host computer that is connected on the same LAN as…
Rafty
5
votes
2 answers

ScreenOS ip6in4 tunnel over transport mode ipsec?

I have setup a point to point transport ipsec session between a ScreenOS router (SSG-5) and a Cisco 3925. The ipsec transport itself works great, but as soon as I try to direct the protocol 41 traffic over the transport, the packets don't transit…
Peter Grace
  • 3,456
  • 1
  • 27
  • 43
5
votes
2 answers

What is a Cisco BVI interface? What is it used for?

I have been Google'd and searched for the answer to these questions, but I cannot find a simple answer. So my questions are about BVI interfaces. What are they? Why do you use them? In what scenario are they useful? I've searched through CCNA books,…
Inf.S
  • 153
  • 1
  • 1
  • 3
5
votes
8 answers

File transfer problems through VPN when Cisco IPS is enabled

We have a Cisco ASA 5510 firewall with the IPS module installed. We have a customer that we must connect to via VPN to their network to exchange files via FTP. We use the Cisco VPN client (version 5.0.01.0600) on our local workstations, which are…
Richard West
  • 2,978
  • 12
  • 44
  • 49
5
votes
3 answers

Trying to understand why VLANs need to be created on intermediate switches

I'm currently studying for the Cisco switching exam and having trouble understanding exactly how 802.1q tagging works. Given three daisy chained switches (A,B, and C) with trunk ports between them and VLAN 101 defined on both end switches (A and C),…
Jon Reeves
  • 438
  • 2
  • 8
5
votes
8 answers

Cisco VPN Client on Vista - Virtual Adapter

I have used the Cisco VPN client for years, and on XP it is pretty much rock solid, on Vista, not so much. You might be able to connect, but unless you set up a constant ping to something, it usually will disconnect, with this error: Reason 442:…
ScaleOvenStove
  • 285
  • 6
  • 11
5
votes
3 answers

Port statistics on Cisco switch

Where I work at, we have a bunch of Cisco Catalyst 3560 switches (plus two routers), which no one knows how to administer (the guys who installed them, it turns out, don't like doing tech support for free), so I'm stuck trying to figure out how to…
Martin
  • 143
  • 1
  • 2
  • 11
5
votes
6 answers

Router IP (Best Practice)

I learnt that routers shall have the last IP for the subnet, eg: 192.168.1.0/24 -> router IP shall be 192.168.1.254, and so on. But... why is this? Is this merely preferential or there is also other reason? Thanks!
Andre
5
votes
4 answers

Help me understand the 'ip route' command for cisco routers

I just can't wrap my head around it. For example: I want the left-most router to be able to ping my computers on the left and vice-versa. Where would I set up ip route and to what address. I feel like I'm just guessing and don't really understand…
Sergio Tapia
5
votes
2 answers

Cisco IOS: Segregating VLANS

I am trying to segregate the traffic on the VLANs, as one is our visitor VLAN (VLAN 3 is the guest lan). It is a Cisco 881W router. Here is my VLAN configuration: interface Vlan2 ip address 10.10.100.1 255.255.255.0 no ip redirects no ip…
Dan McClain
  • 6,563
  • 1
  • 21
  • 24
5
votes
3 answers

Making an ASA TFTP backup through VPN

I have a site to site VPN configured between two ASA 5520s. I have a TFTP server behind ASA1, with an IP of 172.16.1.1 on the "inside" network. I'd like to be able to copy the running config of ASA2 through the VPN to 172.16.1.1, but am unable to…
Victor Trac
  • 277
  • 2
  • 3
5
votes
2 answers

lacp, cicso 3550, 3560, help with configuration

Hey all this is a repost from a question I asked on the cisco forums but never got a useful reply. Hey I'm trying to convert the FreeBSD servers at work to dual-gig lagg links from regular gigabit links. Our production servers are on a 3560. I have…
Flamewires
  • 433
  • 2
  • 10
5
votes
3 answers

Aironet 1200's Auto-Channel Feature: When should it be used?

In our building we have around 25 1200 series Aironets, with a bit of overlap in some areas. Up until this point, we have had them deployed in alternating 1/6/11 channels, but we are wondering if we would get better performance if we used the…
Josh Brower
  • 1,669
  • 3
  • 18
  • 29
1 2 3
…
99 100