Other Network Architecture Subjects

I encounterd a strange sitoution. Since I upgraded switch stack from 12.1(19)EA1D to 12.2(25)SED last thursday I am seeing unicast converations from other hosts on my port.No SPAN is currently active. I tried setting the port back to its defaults, ho...

For the life of me, I cannot find what GIG modules I need to chain my 2950 to my 3650 when it comes in. I have dug through the whitepapars, etc and cannot find a reference. I was just wanting the gig ethernet model numbers. Fiber can be used later...

Folks, Tring to convert the switch from catos to native. When i loginto the msfc and try to download the new image it tells me that i have a socket error. i can not even ping the tftp server from msfc. All configs are default as it is a brand...

We've just added second Full T1 line tothis router to dedicate full T1 bandwidth our two database servers.We are still experiencing the slow performance to our remote location such as file copying and acceessing applications.below are configs and sh ...

I cannot get any of my Cisco switches to sync with an NTP server. I have configured a Windows Server to be the NTP server for all of my network equipment but it will not work. Here is the config:version 12.2no service padservice timestamps debug upti...

I have 4 6148A-45F, in slots 1,2,3,4.When i boot the switch they do not show up in the config and i get an error message when the switch is booting up which saysNO IDB allocated for unsupports cards???Any ideas?Thanks

Hi,I have a 3500XL Catalyst switch and it has just stopped working.The LED's on the front show up as:-1,2,3,4 - no light5,6 - Orange light7-24 - Green lightSystem LED is flashingRPS - no lightSTAT, UTIL, DUPLEX, SPEED - Green lightAll network activit...

I have got a query regarding adding an additional L2 switch to a network.I look after a manufacturing site which has 1 main comms room and 5 subcomms.A total of 25 L2 switches and 2 L3 switches with redundant ISDNI needed to had an additional L2 swi...

I am confused about what happens when you clear and/or prune VLAN 1 from a trunk. The literature says that you can clear VLAN 1 from a trunk, and that will stop VLAN 1 user traffic and BPDUs from traversing the trunk. However, management protocols ...

when i use show ip dhcp bind command on switch. the mac address is two bit more than normal.such as 0100.0039.2821.b1what mean of b1 .how could this happen.do you have some idea?

I am having one subnet of many not showing up in the Windows Browse list. I just moved this subnet from being directly on my 6509 switch to being connected through a fiber port on the Sup 1A module to some brand new switches. I can not see where my i...

Dear all expertsI have a trouble when configure the pix 515. I have config a public address (218.103.43.88) to allow a internal machine to access internet, this config is working fine. Now, i want to allow internet users to access the internal mach...

Hi, I have noticed that two of my switches has "spanning-tree vlan 1002-1005" in my running configuration. Since we are not using those vlans, I was thinking of removing it from our running configuration by doing "no spanning-tree vlan 1002-1005". Is...

Hello friends. I have a router 805 with 1 ethernet and 1 serial interface. I'm trying to use the ethernet like a wan connection because my ISP give me the access to Internet through an ethernet cable. I have 2 valids IP's, one is in the ISP and the o...