Thanks Adam.
Rest inline.
On 2018-05-17 10:18, [email protected] wrote:
[email protected]
Sent: Wednesday, May 16, 2018 10:57 PM
Hi guys,
I'm trying something strange and funky in a lab and of course ending
up at
a
dead-end :)
I'm trying to configure OpenContrail to peer with ASR9K.
I've already found a sample configuration for ASR903 but that one has
IOS
XE.
Does anyone know if there is an equivalent for the following commands
on
IOS XR?
So far I can't find anything and am knocking my head against the wall
a
bit (I
did find that MGRE should be supported though and MPLS over it).
l3vpn encapsulation ip MGRE
transport ipv4 source GigabitEthernet0/4/7
route-map SELECT_UPDATE_FOR_L3VPN permit 10
set ip next-hop encapsulate l3vpn MGRE
ASR9k does support mGRE but only in Draft-Rosen-MVPNs.
-so the tunnel endpoints and the necessary overlay encapsulation is all
determined via BGP (so no route-maps or NHRP).
You could try to follow this guide:
https://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r6-1/lxvpn/co
nfiguration/guide/b-lxvpn-cg-crs-61x/b-lxvpn-cg53xcrs_chapter_0100.html
and just substitute L2TPv3 with GRE encapsulation and see how far you
can
get.
-but the guide is for CSR and I haven't found anything relevant on
L2TPv3 on
ASR9k.
I have a feeling that in the end my struggle would bring more headaches
than
results.
The light at the end of the tunnel is not clearly visible :)
Well you should ask Juniper folks as they claim vendor neutral support
-would like to see how they tested this with XR :)
Most likely p2p GRE.
I suspect this was not tested with IOS XR or at least from what can be
found
via the Opencontrail site.
I really like the main idea of Contrail (or tungsten) - MPLS L2/L3VPNs
all
the way down to VMs, but the execution is terrible.
Why MPLSoUnicorns?? -and then you got to have this nonsense at the DCI
PEs
trying to stitch whatever crazy overlay encapsulation DC folks come up
with
with the good old MPLS VPNs in the core (it makes my life miserable).
Totally agreed but you know, it's this crazy industry push..does not
really
follow logic.
If you have the chance (new DC POD, green-field deployment), then go
with
the unified fabric - MPLS from DC-to-Core-to-Aggregation it's very easy
to
deploy and you'll love it.
No green-field but rather a PoC with this mixed setup..not too much
flexibility to go around.
And then if you want to do the contrail thing just spin up vMX or
XR9000v on
the compute hosts -this way you can build your DC fabric using very
cheap
P-router type switches.
And if VMx or XR9000v eats too much resources on your Host then you can
do
the proper contrail thing but instead of vRouter you can program OVS
from
the ODL (yes the same SDN controller you use for the MPLS core -aint
that
nice) to do the L2/L3VPN label pushing/popping.
Just waiting for the DC world to wake up and realize Frame-Relay et al.
is
dead -that's why we have MPLS now.
:)) I'm just wondering what other crazy thing will follow and re-invent
the
wheel :)
Thanks for the long, detailed e-mail and for all the help!!
mihai
adam
netconsultings.com
::carrier-class solutions for the telecommunications industry::
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