On 05/23/2013 10:05 AM, Artur Skonecki wrote:
[...]
> What are EID loopbacks, how am I supposed to use them?
> EID loopback: 153.16.49.225
> EID loopback ipv6: 2610:D0:2164::153:16:49:225

This terminology is due to historical reasons.  In the early days of the
LISP Beta network, all xTRs were Cisco routers without hosts behind
them.  In order to have a pingable EID, a loopback interface was
configured with the first available EID from the prefix.

>
> I understand that a lispmob xtr is supposed to encapsulate/decapsulate
> all ingress/egress traffic.

Well, most of it.  It should only decapsulate traffic destined to an EID
prefix that it is responsible/configured for.  And it only encapsulates
all traffic, if it is configured with a proxy-ETR, otherwise it can also
forward natively traffic towards non-LISP destinations.

> Does it mean that nodes behind xtr do not need to be mobile nodes and
> they need to be assigned EIDs from xtr's EID-prefix (EID-prefix:
> 153.16.49.224/28, EID-prefix ipv6: 2610:D0:2164::/48)?

Yes.  Although recursive LISP encapsulation is also possible.

-Lori

>
> Regards,
> Artur

Reply via email to