Other Network Architecture Subjects

Hi ,Cisco had lately anounced that the router configured with IPv4 are vulnerable to DOS attacks.This advisory is available at <http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml>. I'm having a router which is exposed to Internet . ...

I have one 2514(2*ethernet+2*serial), one mini hub, 2 PCs, I use rogers cable(toronto) connect internet, now I have to put two NICs in my PC, I want to use 2514 to get the IP from ISP, because the ISP bind the MAC and IP together, so if one of ethern...

what is the best and cheapest to bond 2 t1's into one 3m point to point pipe?, would it be better to do it internally in the router or using a mux, and what would be the smallest router that could handle this task?

Hello,I have 2 core routers running BGP,OSPF and injecting default route to 2 core switches (using command: default-info originate always). So, each switch has 2 default routes. These switches are running HSRP. Is this a bad practice?if so, what w...

I have a PA-A3-T3 in a 7204 Non Vxr. The LEC is installing my DS3 in a 10 story building, but will only put the DS3 shelf on the first floor.So my question is will it be ok to run about 250' of coax to my router from the telco's DS3 equipment?If this...

I am in the process of migrating a Nortel 5000BH backbone to a 6500 based backbone. I have a requirement to provide at least 400Mpbs interconnection between the two networks for the duration of the user/system migration to support client/server appl...

We have an NT server that that has Services for Macintosh running to share volumes to our Macintosh users on another subnet. This service is also advertising printers to the Mac's when they open their chooser and click on LaserWriter. We want to bloc...

When we try to estableshis the comunication which as too fax (source-destination). During the trasmition it present these error:"Aug 5 09:29:34.263: np_vsmgr_est_fax_msg_handler(): msg_id 0x1685 unknown."

Here is my config for the 3550 I am using for my default router:version 12.1 no service pad service timestamps debug uptime service timestamps log uptime service password-encryption ! hostname Switch ! ! ip subnet-zero no ip domain-lookup ! ! spannin...

Hi,I'm trying to setup port channel between Cat2900xl and Cat5500 so there would be 200mb connection between them.I issued "set port channel 4/23-24 mode on" on Cat5500 and issued "port group 2" on interface 23&24 on Cat2900xl.Well, it didn't work. ...

I am configuring a 2507 which has 1 - ethernet Port, 2 - Serial Ports and 16 - ethernet Hub ports.I am a newby to the Cisco world and have attempted to follow all the online docs I could find. I have been successful at configuring the router and will...

Is there a way to access a router CLI from a Unix station using rlogin? All of the documents that I have come across show how to use rlogin from within the IOS. Thanks,Todd

Location A has two routers communicating to each other with EIGRP on the LAN. One Router connects to Frame Relay and the Other Router connects to an ISP Circuit. Both Routers communicate with Hub and provide resilience in the event of a failure with ...

I have a Cisco 2621 that is reload continuously the IOS with the message system *** received a Bus Error Exception ***Can anybody help me to gain again the control of the router ?Thanks in advance for your help