Switching

Hi allI can configure router to allow external access to internal server by static NAT. Are there any way to configure without static NAT, and we can use ACL to prevent them from some services?Thanks for all your adviseHere is the example configurati...

Does anyone have an idea why this is happening. I am doing a packet capture and am seeing a totally different conversation of 2 hosts on the same vlan. I checked the arp table and the ip address  and mac address are in the arp table. I am in a small ...

We currently have 3 VLANsVlan1 - All servers, network devices and a few special cases of PC'sVlan2 - Building BVlan3 - Building AAre server room is in building b with our virtual and storage solution but we moved our archiving storage solution to bui...

Hi,I'm no expert in switching so I'll try to be as clear as possible.I have a Catalyst 3560 switch (IOS 12.2) which is already connected to an Alcatel switch through a trunk (802.1q). This trunk carries 2 VLANs: 10 and 20.I have to add a new VLAN (id...

We have a pair of 6509 w/SUP720-3BXL switches running HSRP and are connected via trunk using the sup 1G interfaces.  We did not create a channel-group, just direct connected.  We're now starting to realize this interface is not enough bandwidth and w...

Dear friendsCan someone explains how routers bind subnet mask to routing updates received from other routers when they themselves have some interface of that class itself and what are the different cases and treatment.Like1. when routers dont have en...

Can someone explain with example the following points1. Difference between classful routing and classful forwarding2. Difference between classless routing and classless forwarding

Hello,Recently we bought a cisco RV180 to manage the company's internal comunications, and also to implement features like VPN.However we cant even configure the workgroups because the computers cannot see each other in the LAN, this didnt happened p...

Please someone describe how routing protocols update their routing table with entries from their neighbors using classful routing protocolsBreak the explanation in two parts1. Theory in short2. ExamplePlease help

hi,i have one WAN router (i.e. juniper router). on internal port i have configured two public ip( 56.10.45.225/27 & 56.10.246.97/28)i have connect this router to my switch 2960-s by  fiber uplink and created SVI on switch VLAN 1.all ports of switch b...

  Hi Everyone      Wat's the router's cpu on line cards used for ? Like Punt pactet 、ARP、CDP this kind of control level of information is handled by the linecard CPU or the CPU on Router engine。                                                        ...

One of our enclosures lost one of it's backup links to a Nexus5548.   Looking at the interfaces the status reads "faulty".  The interface in  question is Eth1/5, but what I also noticed there were a couple  interfaces not in use w/ the same status. I...

Hello,If I have switch A that has 3 vlans with ip addresses in other words 3 switch virtual interfaces and I configure one  port as a switchport trunk that has the following commands switchport trunk mode and encapulasation dot1q.   Now if I want con...