Switching

Hi,have a 3560 switch and the ip phone reboots sometimes... how can i find out the cause? the phone draws power inline and about 26 phones...Thanks

I do not know if this is the right forum for this but here it goes. I am trying to configure FE0/0 on my 2621 to be a DHCP client and get it ip address from my Cable Modem. I am stumped on why the option is not present under the interface ip tree. Co...

I've added a server (Proliant 3000, WIndows 2000 SP4) in the DMZ, but the PIX doesn't answer his ARP request. The access-list are OK. If i enter statics entries in the ARP tables (PIX and Server), they can communicate normally, but without these line...

I need to configure point to point serial connections on 3 routers. One is a 2811 and the other 2 are 2801's. The Point to point lines are in place and are terminated with Kentrox 656 CSU/DSU's at each location. I was thinking of using ppp authentic...

Hi,Can this scenario work? Assuming I have a flat network, a computer with 2 NICs and are connected to 2 different routers. I configure the routers to run HSRP between them. But the routers do not have any layer 2 or layer 3 interconnects between ...

im brand new to cisco, and ive just purchased a catalyst 1900 to start learning on. im trying to get some switching started, and i cant seem to get things working.what i did was create an ip address for the switch, which is the same ip address for in...

We have one GigEth and we configure many vlan initerfaces using this. when we allow a new vlan, other vlans allowed get disconnected for some seconds....To counter this problem, we put a comma at the end of the following command line and then add new...

hi, not sure if is the corretc area for posting this: I have a cisco account and i think i must to upgrade it in order to gain access do IOS sofware?do i have to get a new account or how can i upgrade my current account?does it cost?can i upgrade to ...

I have an ethernet device that's manually configured in 100Mbps/HalfDuplex with a static IP address, and when I plug it into my Cisco Catalyst 2955 switch I get the following behavior:1. The green light eventually comes on for the port, signifying t...

Am I right in thinking that a dynamic internet connection, with its frequently changing IP Address, is more secure than a static one? Is there any difference at all, in terms of security?

The flash on my switch houses 2 ios images. The new image is in my new created directory(drwx)and the current image is in the root of flash(-rwx)I want to use the "boot system & reload" command but must my new IOS image be located in the root of the ...

I'm working on labs for my CCNA and I'm curious about the stp update time. All the books that I'm reading tell me that STP will be in blocking mode for 20 seconds, listening for 15, and learning for 15, for a total of 50 seconds before ports were for...

Is there a way to setup https access for a Catalyst 2950? I've setup the switch for http access in order to provide network assistant connectivity, but would like to secure this access [somewhat] with https.

I have seen this on my main router, what does it actually do, and used for ?thanks