![]() ![]() Assuming the server that issued the lease originally can still be contacted, then it will respond to this request, returning a DHCP Ack to the client, renewing the lease & rebinding the client to the same IP address. At this point, technically the client (broadband router) is classed as renewing its IP address. When this lease time is 50% expired after 7.5 minutes, the router (DHCP client) sends a DHCP Request to the server to extend the lease. At this point, the client is classed as being bound to the allocated IP address. ![]() ![]() When a DHCP client (broadband router in this case) is assigned a WAN IP address from the DHCP server on the network, it is also assigned a lease time (typically 15 minutes in this case – to conserve IPv4 addresses). That said, perhaps some chipsets do not request a link extension or are wrongly configured as PPPoE.Ĭonsider what happens when the DHCP lease is 50% expired That paragraph above is also not true, because the DHCP client (router in this case) has no control over the lease, all they can do is request its extension. Some people think that if you if you have a Broadcom chipset the lease should be permanent but with Lantiq and with others, it may be 15 minutes. This only affects customers using some 3rd party routers and it might be down to the chipset manufacturer used by that router. The Connection Type field in this section of the configuration should be set to IPoE with TalkTalk, not PPPoE. Some of the information I have provided below is taken from Charles previous posts (full credit to him), he has plenty of experience with 3rd party routers used on broadband, I do have an extensive knowledge of routers but only those used in the commercial arena, not on broadband links.įirst off check the routers WAN or Internet configuration. Hi have been thinking this through some more & whilst I don't have a direct answer this may clear up (I hope) some confusion.įirst off I totally agree with the DHCP Option 60 setting is not important here at all. ![]()
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