Other Network Architecture Subjects

Is anyone aware of any documents on CCO of how to transition an enterprise network from regular legacy Spanning Tree Protocol to Rapid Spanning Tree Protocol? I found this document that describes RSTP, but it doesn't give any conversion advice:http:...

Setting a rspan for one of our customer. After reading through the document, what confused me is the reflector port. What's the purpose to have a reflector port? Is this for a local monitor device? The way I am looking at the mechinism of the rspan, ...

I'm looking for suggestions on my config for a 3700 router utilizing atm. For an upcoming disaster recovery test, we want to be able to swing the circuit from AT&T directly to the DR Hot Site for the Network test portion. Any advice on the best way t...

i have a NT1 PLUS B , it has U interface ,two line interface and a So/t interface. i connect the So/t interface to the 2600's isdn bri s/t interface ,but it didn't work.the isdn port on 2600 cann't get active at all.when i connect the 2600's ISDN por...

hai all, In cat 3550 everybody knows vlan 1 is management vlan . is there any way can we configure other than vlan 1 as a management vlan ?if your answer is yes , pls let me know how to configure .Thanx&regards,Rajesh

hi, we found a ubr10012 with a LED module above processors. there are a lot of key pad like "enter" "->" "<-" and so on . they seems no function. Dose anyone has similiar situation ?best regards.fred.

Hello, I have a 2509 and am trying to use it as a reverse telnet server for my other routers. I have everything connected and followed the Cisco Example but when I connect it just sits. It does say the connection it open and the remote router gets a ...

Hi,I have a big problem.I have a MGX 8850 switch with PXM45B.and The swich have AXSM and AXSME card.I have tried to configure as following. AXSME_oc3 (line 1) ---- AXSME_oc3 (line 2) : Local ATM PVC conncetion.but I can't find out the configuration f...

Hi,I've a customer environment with the following setup :(Branch)Internal LAN->FW->ADSL Router->ISP->Internet->ISP->ADSL Router->FW->Internal LAN(HQ)The branch need to setup a tunnel with the HQ with the help of the firewall (not a Cisco), then only ...

Hi,Is there any easy way to check all our switches if their subnet mask are correct or not. we have arround a 1000 switches and I don't want to telnet to each one.Thanks

I've just recently inherited an undocumented network (*.vfde.org) after a recent black out with the company. Talk about a two for one special.The clients have not been able to receive email from external sources for about a week after a recent NIC bu...

I'm try to find out what this command is used for. It is on by default on my 3550 switch. switchport mode dynamic desirableany information would be greatly appreciated.thank you.

Hi,I inserted an AIM-ATM module in the AIM slot 0 (tried also slot 1...) of a 3745 router witrh 128 MB of RAM and 32 MB of flash.I tried following IOS versions:- c3745-entbase-mz.123-8.T.bin- c3745-entbase-mz.123-4.XD.bin- c3745-is-mz.123-9.binbut mo...

I administrate a network whith an ATM / Frame Relay / TDM technologie.I need to optimize all the nodes network (Ports and Slots occupied/total) and the trafficnetwork (traffic matrix).Could you help me to find the best way to make the network optimiz...

Hi, I've got IDS 4235 running software ver 4.1(4)S97 installed in my network. Yesterday I installed VMS 2.2 basic (including CSCsa16682 and CSCee60913 patches). I upgraded the IDS MC Server to the 4.1(4)S97 and added my IDS sensor successfully. BUT w...