Other Network Architecture Subjects

I have a cisco 1721 which is part of a network of many others cisco1721. Suddenly I was unable to telnet it and a router replacementdidn't help. I can only telnet into it only by using vty 4. If I useall the vty the telnet doesn't work. Then I have a...

Hello,i have a little Problem, so i hope one can help me.My Problem:I want to create a Login for Users, who will connect to my local LAN over an Cisco 17xx-Router.The User will connect to an LAN-Server with the IP-Adress of 192.168.1.253 over an IP-A...

Hello,first of all sorry for my bad english, i am writing from germany.I have the following situation here:- 2 Server- 4 PCs- Cisco 836- DSL Line- 8 fixed IPs- 1 assigned to router additionalSo my router is dialing in at the isp, and gets an IP assig...

I am creating vlans at a site and Cisco documentation states that Cisco prefers ISL over Dot1q. Can someone explain to me the difference and what's wrong with encapsulating with dot1q?

I have an a network with Catalyst 3550-12T like backbone.From it I have ten links to 2950G-24 switches all in trunk.I have configured 25 Vlan on Catalyst 3550 but I don't want propagate for whole network.How can I don't forward vlan for all VTP domai...

Hi.I have a dedicated network for backuptraffic. That is, a 6506 sup2/msfc2 with a backupserver directly connected to giga1/1. Access-switches is enclosed to private-vlan 10/20 and port-secure is enabled on all access-switches.Running a VACL on my 65...

How can I specify that port # x only can use xMBps/bandwidth using QoS? At least I think I have to use QoS for that...if not, how?TIA.

Hi,I've had a couple of instances where ports have discovered additional MAC addreses and been disabled, as they should, but workstations/NICs on the ports have not been changed.2 MAC addresses have come up which I don't recognised, they are:30-1c-08...

Hello,We have a requirement to connect a W2K server having 1 physical NIC, that is aliased to multiple IP addresses (all ip addresses are on same VLAN). This server will connect to a switchport on a 6509 switch.The STP enviroment is running MST and t...

I don't know much about static/dynamic VLAN.While to use static or dynamic VLAN ?thanhks

I am creating vlans at a site and Cisco documentation states that Cisco prefers ISL over Dot1q. Can someone explain to me the difference and what's wrong with encapsulating with dot1q?

Hi All,I look for the MIB CISCO-AIC-MIB. This is for NM-AIC-64 module, but don't find this MIB on CCO or FTP site. If you can help me.RegardsStephen

I don't understand the concepts Switch port modeI only know that it have 3 mode : - access mode - dynamic mode - trunk modecould you explain to me ?thanhks

I have a legacy AS5200 that I want to use for out-of-band access onto the network in the event of Internet VPN. However I want to restrict this access to only a VT100 session. I want to allow engineers dial-in to the network and have only the a VT1...

Hi all,I have a problem with the distribution of images on my Catalysts 2950 & 3500XL with CiscoWorks.I have configured tacacs+ authentication & authorization on my switches as follows:"aaa new-modelaaa authentication login default group tacacs+ line...