Virgin Media is a significant provider of broadband to the buyer and enterprise markets within the UK. In reality on the time of writing this text, Virgin Media was second solely to British Telecom (BT), the most important participant.
As an Web Service Supplier (ISP), Virgin Media facilitates allocation of dynamic Web protocol (IP) addresses to routers in its community. These routers are sometimes the Tremendous Hubs equipped by Virgin Media themselves. A Tremendous Hub is a mixture of a modem with wired and wi-fi routers in-built.
Dynamic IPs are assigned on Large Space Networks (WAN) by Dynamic Host Configuration Protocol (DHCP) servers. On the router stage, this one WAN IPs could be translated into many Native Space Community (LAN) IPs by the router in a course of known as Community Handle Translation (NAT). These LAN IPs are spawned on demand for community equipments resembling computer systems as they hook up with the router by wire or wirelessly.
The dynamic IP usually comes with a seven day lease time. Theoretically, when the lease on the IP expires, a brand new IP ought to be allotted to the router. Nonetheless, in actuality, the router “renews” it is allotted IP half-way by means of its lease and is allotted the identical IP tackle.
For those who wished to vary the dynamic WAN IP allotted to your router, you solely want to change off your router for not less than fifteen minutes then on once more and that might usually suffice. Nonetheless, with Virgin Media Tremendous Hub, this doesn’t usually do the trick as I discovered for myself.
The ISPs want to offer out dynamic IP addresses versus static IPs solely as a result of dynamic IPs characterize minimal administrative overhead which is essential for preserving prices down. Moreover, because the present IPv4 addresses have gotten more and more scarce because of the persevering with explosion in new networked locations coming on-line, dynamic IPs permits the “recycling” of IPs. That is the method by which IPs are launched to a “pool” of IPs when routers are offline thus enabling these launched IPs to be taken up and utilized by these which come on-line.
Generally, even when the router goes offline, or the lease time on the IP tackle to the router expires, the identical IP tackle from the “pool” of IP addresses might be allotted to the router. In such circumstances, the dynamic IP tackle is behaving extra like a static IP tackle and is claimed to be “sticky”.
Different occasions it is usually doable for a “duff” IP tackle, i.e. an IP tackle that’s “corrupted” ultimately to be assigned to you because it occurred to me just lately. Regardless of numerous makes an attempt at restarting the Tremendous Hub, I saved on getting the identical dynamic tackle from the “pool”. This example was fully unsatisfactory to me because the IP tackle prevented me from accessing my very own exterior websites! The answer I examine talked about altering the Media Entry Management (MAC) tackle of the receiving ethernet card, which in my case was that of the Tremendous Hub.
Sadly, the Tremendous Hub does not have an possibility for “cloning” of MAC addresses i.e. does not present an interface the place the MAC tackle of a pc in your community could be put by which would drive the present IP to vary. The one method to current a distinct MAC tackle to the DHCP servers could be to connect an exterior Community Web Card (NIC) to the Tremendous Hub. In different phrases, flip the Tremendous Hub right into a modem solely and fasten an exterior router to it. Fortunately, the Tremendous Hub equipped to me, the VMDG480 by Netgear, allowed the Tremendous Hub to be switched to modem solely mode.
Thankfully, I additionally had a spare router, the wonderful Vigor 2820 Collection ADSL 2/2+ Safety Firewall with the most recent Firmware, Model three.three.5.2_232201. Though a wonderful modem/router in its personal proper, the kind of router isn’t essential for the issue we are attempting to resolve right here.
I adopted these fast and easy steps beneath to get every little thing working.
1. On the Tremendous Hub person interface, allow the Modem Mode.
2. Connect the ethernet cable from the desired port on the Tremendous Hub to WAN 2 port on the router.
three. On the Router Management Panel, make sure the Bodily Mode is ready to Ethernet.
four. On the WAN 2 interface, the IP Handle, Subnet Masks and Gateway IP Adress ought to routinely be obtained from the modem.
5. Go away the MAC tackle as default.
6. For future points with a duff IP, I’ve the choice of cloning a MAC tackle which ought to drive a alternative of the WAN IP.
And this sorted out the difficulty of the sticky IP with Virgin Media. Thankfully, the brand new IP tackle was “clear” and allowed me to the websites which have been unobtainable with the earlier corrupted IP tackle.