Other Network Architecture Subjects

Hi,I am running IP telephony (not Cisco) over Cisco LAN switches using the voice VLAN feature. Everything works fine. NOw, I want to use dot1x for port authentication. This is not supported on voice vlans or any type of trunking interface. Why not...

We have approx. 7 VLANs configured on our network using Catalyst 3550 switches and would like to allow multiple VLAN access for a few machines. Example: client is on the 10.25.21.0/24 VLAN while a server is on the 10.25.130.x/24 VLAN. We would lik...

Hello,I installed 4 cisco 2620 routers with the linux computers. Cisco 2620 router has two FastEthernet interfaces. There is a linux computer between two cisco routers. Without cisco routers, there is no problem between two linux machines. Because I ...

Hi all,I connect 2 Switches (Type Cat 3550-48) by using GigaStack GBICs (WS-X3550-XL).The result of using ONE single cable is 1Mbit/s Fullduplex, using TWO cables (without changing the configuration) it changes to 1Mbit/s HALFduplex.So far so good, ...

Guys,Need some help trying to understand this config (see attached).It looks simple enough but i just need some clarifications.1)Why are some ports being assigned to Vlan2 when there is no ip for Vlan 2 to begin with.2)is it really necessary to confi...

How do you decide which switch is blocking and which switch is non-blocking? Is there any calculation for this?

How Do I can download Image of the IOS 11.3(2) XA4 of the Router 2611 with 32MB DVRAM and 8MB Flash Memory?I need help you.Thanks you for allIng. Grave de Peralta

Hi,Is it possible to enable policy routing on an IP packet which is emitted by the router itself ?In example, can I set up Policy Routing on the packets emitted when I telnet or ping an IP from the console ?Thanks.

Is it possible to check windows registry entries and deny or permit, for example, network access depending on the value? ( if any key in HKLM\SOFTWARE\CSCOpx\** have a value=1 than deny network access or so)thanksArmin

I have a 4506 running 7.6.2. I have the following blades running in the chassis. WS-X4013 - SupII, and 4 WS-X4448-GB-RJ45 - 10/100/1000 blades. I have several devices on multiple blades that will not connect at 100mbs / Full Duplex. The devices show ...

Hi, I want to add a gigabit module to Catalyst 5500(WS-X5410), but i could not find if i can use the Cisco 1000BASE-T GBIC with it module, i need it for servers.someone've installed it ? Thanks, best regards.Luis.

When enable port security in cat4006 L3 IOS(IOS (tm) Catalyst 4000 L3 Switch Software (cat4000-I5K2S-M), Version 12.1(19)EW1, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)).interface FastEthernet4/3 switchport access vlan 2 switchport mode access switchpor...

Anyone know when this might be released?Thanks.

Do these hurt anything? If something keeps flapping alot, is there anyway to shut it down or do something about it?I keep getting these messages from our syslog box. Hard setting the duplex/speed has had no effect nor keeping it set to auto negotiate...