06-25-2013 03:07 PM - edited 03-04-2019 08:18 PM
Hi,
I have to set up a VDSL2 connection (G.993.2) using an EHWIC-VA-DSL-B adapter on a 2911 ISR G2 router.
Could someone please explain why this is beeing configured using the Ethernet - Interface (in my case ethernet0/0/0) instead
of the ATM interface (beeing used in "old school" ADSL installations)?
Is there really Ethernet running between the Controller and the DSLAM? If so, why do we need a specific Controller for it?
I did not find a document which explains this in more detail.
Example:
interface Ethernet0/0/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip pim sparse-dense-mode
ip flow ingress
no ip route-cache
load-interval 30
!
interface Ethernet0/0/0.7
description VDSL2 Internet Connection German Telekom - VLAN 7 tagged
encapsulation dot1Q 7
no ip route-cache
pppoe enable group global
pppoe-client dial-pool-number 1
!
!
interface Dialer0
description Internet
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
ip tcp adjust-mss 1412
dialer pool 1
dialer-group 1
ppp authentication pap chap callin
ppp chap hostname ***removed***
ppp chap password ***removed***
ppp pap sent-username ***removed***
ppp ipcp dns request
no cdp enable
Thanks
Heinz
Solved! Go to Solution.
06-28-2013 02:04 PM
Ethernet can work on many different medias.
In this case layer 2 is Ethernet, layer 1 is VDSL2.
06-27-2013 12:11 AM
Correct, VDSL2 is Ethernet First Mile technology, and there is no more ATM.
Note your adjust-mss value is wrong, should be 1452. Also, ppoe enable and dialer-group are not needed, and virtual reassembly should be disabled.
06-28-2013 12:26 PM
But isn´t the maximum cable length for Ethernet over copper just 100 meters?
06-28-2013 02:04 PM
Ethernet can work on many different medias.
In this case layer 2 is Ethernet, layer 1 is VDSL2.
06-29-2013 11:48 PM
Ok, understood.
Thank you!
Heinz
06-29-2013 11:53 PM
Hi Paolo,
Note your adjust-mss value is wrong, should be 1452. Also, ppoe enable and dialer-group are not needed, and virtual reassembly should be disabled.
why should virtual reassembly be disabled?
Thanks
Heinz
06-29-2013 11:56 PM
Because is deleterious.
Thank you for the nice rating and good luck!
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