Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread Mark Tinka


On 4/May/20 12:21, Gert Doering wrote:

> This is *not* funny.
>
> The work that IETF/IDR is doing these days is truly and deeply scaring
> me.  "Hey, we have this nice reliable protocol to transport information
> from here to there.  Why not add tons of different other things we want 
> to be transported from routers to collectors, or between routers, to
> BGP, because, you know, we can?".
>
> Trying to understand what a BGP speaker is doing is difficult enough
> today.  Or, for that matter, get an implementation right.

I wasn't kidding.

For years, I've been saying it won't be long until BGP is transporting DNS.

Mark.



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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread adamv0025



> Gert Doering
> Sent: Monday, May 4, 2020 11:22 AM
> 
> Hi,
> 
> On Mon, May 04, 2020 at 11:36:09AM +0200, Mark Tinka wrote:
> > Of course, all going over BGP :-).
> 
> This is *not* funny.
> 
> The work that IETF/IDR is doing these days is truly and deeply scaring me.
> "Hey, we have this nice reliable protocol to transport information from
here
> to there.  Why not add tons of different other things we want to be
> transported from routers to collectors, or between routers, to BGP,
because,
> you know, we can?".
> 
> Trying to understand what a BGP speaker is doing is difficult enough
today.
> Or, for that matter, get an implementation right.
> 
Well how I see it is that no matter how hard IETF (or "IDR Elders") tries,
certain percentage of junk always gets past the "short-sighted idea filter"
and eventually makes it into and RFC.
It's just these days there seem to be overall increase in junk ideas with
hypes around let's put everything through BGP (or EVPN-VXLAN for that
matter) -so I guess the filter gets overloaded and naturally the overall
number of bad ideas that makes it through increases at times. 
To be fair to IETF folks though, 
On the latest IDR (virtual) session on march 30, a number of new "let's use
BGP for..." ideas where straight up "slapped", yeah wasn't pretty (or
professional in one case, in my opinion) - but I guess one gets pretty tired
of stupid ideas after a while).  

adam


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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread cnsp


> On Mon, 4 May 2020 at 12:15,  wrote:
> 
> > Just my 0.01$
> 
> Can I get a refund?

 just come and collect a ningi in my shed on Kakafroon Kappa,
but beware the vogon's.

Yes, you'll get a free  Pan Galactic Gargle Blaster.

Juergen.

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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread Gert Doering
Hi,

On Mon, May 04, 2020 at 11:36:09AM +0200, Mark Tinka wrote:
> Of course, all going over BGP :-).

This is *not* funny.

The work that IETF/IDR is doing these days is truly and deeply scaring
me.  "Hey, we have this nice reliable protocol to transport information
from here to there.  Why not add tons of different other things we want 
to be transported from routers to collectors, or between routers, to
BGP, because, you know, we can?".

Trying to understand what a BGP speaker is doing is difficult enough
today.  Or, for that matter, get an implementation right.

gert

-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
 Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany g...@greenie.muc.de


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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread Mark Tinka



On 4/May/20 11:23, Saku Ytti wrote:

>
> Can I get a refund?

Can I mail it to your WFH :-)?

Mark.
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread Mark Tinka


On 4/May/20 11:17, Nick Hilliard wrote:

>  
>
> as long as you can encapsulate all that mess in json, I'm good.

Well, I'll leave that up to my SDN to wrap into my Segment Routing and
move it into my SD-WAN over my 5G :-).

Mark.
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread Mark Tinka



On 4/May/20 11:11, c...@marenda.net wrote:

> Today everything must  go over https (like dns, ...) 
> but do not forget to use XML to over bloat everything 
> and use at least TLS Rev. 9.11 . 
>
> Will be punted into the dollar-note big cards (Hollerith) (80 Characters
> wide) 
> Fragmentation will be managed by punting a "C" in Column 5 . 
>
> So we will soon see MPLS over HTTPS with fancy XML-Schemes- 
> Network-devices will be CHROMOS-Browser-Devices, 
> Don't think of performance or saleable implementation in hardware, 
> When that would be ready, the standard has been obsoleted and replaced by 

Over course, all going over BGP :-).

Mark.
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread Mark Tinka



On 4/May/20 11:11, c...@marenda.net wrote:

> Today everything must go over https (like dns, ...) but do not forget
> to use XML to over bloat everything and use at least TLS Rev. 9.11 .
> Will be punted into the dollar-note big cards (Hollerith) (80 Characters
> wide) Fragmentation will be managed by punting a "C" in Column 5 .
> So we will soon see MPLS over HTTPS with fancy XML-Schemes-
> Network-devices will be CHROMOS-Browser-Devices, Don't think of
> performance or saleable implementation in hardware, When that would be
> ready, the standard has been obsoleted and replaced by 

Of course, all going over BGP :-).

Mark.

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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread Saku Ytti
On Mon, 4 May 2020 at 12:15,  wrote:

> Just my 0.01$

Can I get a refund?

-- 
  ++ytti
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread Nick Hilliard

c...@marenda.net wrote on 04/05/2020 10:11:

So we will soon see MPLS over HTTPS with fancy XML-Schemes-
Network-devices will be CHROMOS-Browser-Devices,
Don't think of performance or saleable implementation in hardware,
When that would be ready, the standard has been obsoleted and replaced by


as long as you can encapsulate all that mess in json, I'm good.

Nick

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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread cnsp



>[...] 
> DC-folks# This STP sucks, let's MC-LAG/VSS everything, ok that sucks let's
do 
> TRILL et, al., that sucked let's do VXLAN, wait, how do we do CP-based mac

> learning? Let's do EVPN VXLAN, Oh has anyone reserved VXLAN header field 
> that can be used for micro-segmentation? Tumbleweed ... 
> SP-folks# no way we'll have STP to core, let's sue VPLS, that sucked let's
use 
> EVPN/PBB-EVPN.. 
> 
> adam 

Today everything must  go over https (like dns, ...) 
but do not forget to use XML to over bloat everything 
and use at least TLS Rev. 9.11 . 

Will be punted into the dollar-note big cards (Hollerith) (80 Characters
wide) 
Fragmentation will be managed by punting a "C" in Column 5 . 

So we will soon see MPLS over HTTPS with fancy XML-Schemes- 
Network-devices will be CHROMOS-Browser-Devices, 
Don't think of performance or saleable implementation in hardware, 
When that would be ready, the standard has been obsoleted and replaced by 

Just my 0.01$ 

Juergen 


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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-05-04 Thread adamv0025
> From: Nick Hilliard 
> Sent: Thursday, April 30, 2020 7:14 PM
> 
> adamv0...@netconsultings.com wrote on 30/04/2020 13:14:
> > Never understood this VXLAN nonsense in DC universe (not the comics),
> > in SP space this was a solved problem and is a well-trodden path since
> > ever -PWs,
> 
> everything has its use. PWs have major problems loadbalancing over multiple
> links.
>   
Yes back in the days, but one can use flow labels now,

> Also the complexity of mpls + associated control plane is a drawback in
> situations.  
> 
Well if you compare EVPN VXLAN -there's not that much of a difference compared 
to EVPN MPLS, oh and with VPN labels you get micro-segmentation for free and 
not as an afterthought.
  
> Sometimes vxlan provides the required functionality.  Why use a
> more complicated protocol when a simpler one is a 100% match for your
> requirements?
> 
Futureproofing.
DC-folks# This STP sucks, let's MC-LAG/VSS everything, ok that sucks let's do 
TRILL et, al., that sucked let's do VXLAN, wait, how do we do CP-based mac 
learning? Let's do EVPN VXLAN, Oh has anyone reserved VXLAN header field that 
can be used for micro-segmentation? Tumbleweed ...  
SP-folks# no way we'll have STP to core, let's sue VPLS, that sucked let's use 
EVPN/PBB-EVPN..

adam  


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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-30 Thread Robert Blayzor
On 4/29/20 12:23 PM, Sander Steffann wrote:
> That combined with the whole mess with "your PSU and fan tray are not 
> compatible with the 64-bit OS a few years ago" makes me avoid the platform.

We got bit by this, not just by the 64-bit thing, but when Cisco
deprecated and stopped supporting the whole original chassis in favor of
the V2 chassis. Like fork trucking a whole 1/2 rack DC powered chassis
is easy to do or something you want to deal with. Big peeve when
everything we were running in the chassis was still well within the
power budget of what we had wired to the PEM's... yet, they wanted us to
replace all of it to get is back under support. NEVER again.

-- 
inoc.net!rblayzor
XMPP: rblayzor.AT.inoc.net
PGP:  https://pgp.inoc.net/rblayzor/
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-30 Thread Gert Doering
hi,

On Thu, Apr 30, 2020 at 07:13:32PM +0100, Nick Hilliard wrote:
> everything has its use. PWs have major problems loadbalancing over 
> multiple links.  Also the complexity of mpls + associated control plane 
> is a drawback in situations.  Sometimes vxlan provides the required 
> functionality.  Why use a more complicated protocol when a simpler one 
> is a 100% match for your requirements?

Which actually makes me wonder why I'm not ditching EVPN completely
and going back to VXLAN with configured VTEPs on the Aristas - the
system knows where it's peers are, and it MUCH MUCH simpler to figure
out all the moving pieces...

*sigh*

(The idea behind using EVPN was twofold - one: it would interop with
A9K.  Ditch that.  Two: if I add  into the same VLAN/VXLAN
mesh, I only need configure *that* node, and it will BGP-signal to
all the other nodes "hey, I'm part of it!".  OTOH, most affected
VLANs will only ever see 2 or 3 clusters, and the provisioning knows
which devices are part of it...  meh)

((Now, if all these ugly hypervisors would actually speak EVPN/whatever,
in a reasonably interoperable way, I could just leave the mess to them, 
and provide a default gateway in some place(s), not bothering with all 
this layer2 thinking at all.  But that's not going to happen either))

Can I retire yet?

gert
-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
 Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany g...@greenie.muc.de


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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-30 Thread Gert Doering
Hi,

On Thu, Apr 30, 2020 at 01:14:12PM +0100, adamv0...@netconsultings.com wrote:
> > On Sun, Mar 29, 2020 at 11:52:03AM +0200, Gert Doering wrote:
> > > I'm trying to make EVPN via VXLAN encapsulation work between two
> > > ASR9001 (with the goal of eventually making it work between ASR9001
> > > and Arista boxes, but right now I'm failing ASR9001 <-> ASR9001
> > > already).
>
> Would it be feasible to go the EVPN over MPLS route? Arista might support
> some basic MPLS forwarding (most Data-Centre switches do).

Hah!

As in: the Trident 2+/Trident 3 boxes *could* do MPLS P, but Arista says
that their MPLS capabilities are too limited so they do not provide any
MPLS support for these boxes.  Not sure if it actually could do enough
actual encap/decap for the MPLS PE bits required for EVPN/MPLS - but if
it can't even do P, no good asking.

The Jericho boxes can do "all of this", but given the price difference,
we run the "customer edge" on Trident boxes - no need for full tables
there, rarely a need for extra large buffers or detailed QoS ("these
links are never full").

OTOH, Trident 2+ does 802.1q<->VXLAN perfectly well, and T3 even does
"routed into VXLAN" without performance impact, so this is where the
journey is headed to.  Whether we like it or not.


Now, as a side note: of course ASR9k does VXLAN with multicast underlay
and "MAC learning from the data plane" just fine, but *this* is not
supported on the Arista side.  Of course.

Arista could statically configured VXLAN VTEP neighbours, but *that* is
not supported on the ASR9k side.  Of course.

So, EVPN/VXLAN was the promise "hey, we have an IETF standard here, and
both vendors claim to support it".  And of course some other BUs inside
Cisco actually support this.  Yeah.  (#include )


> Never understood this VXLAN nonsense in DC universe (not the comics), in SP
> space this was a solved problem and is a well-trodden path since ever -PWs,
> VPLS now EVPN (even with traffic engineering possibilities -you know the
> mice around elephant flows...)
> MPLS to DCs is my answer.

Unfortunately, vendors still think MPLS is something for people with
deep pockets... (like, Juniper charging tons of extra money for the
MPLS license for their QFX5k gear...)

I'm totally fine with MPLS...  we've run that for like 10+ years with
lots of cludges around our 6500/sup720s... (like, looped ports from
the box to itself to be able to EoMPLS-away a single VLAN which is
also routed on the box itself)

In the end, I do not really care.  The box config and the linkage 
between "boxes in the same distributed VLAN" is coming from the 
provisioning magic box, I just need to figure out which of the parts
actually work.

gert
-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
 Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany g...@greenie.muc.de


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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-30 Thread Nick Hilliard

adamv0...@netconsultings.com wrote on 30/04/2020 13:14:

Never understood this VXLAN nonsense in DC universe (not the comics), in SP
space this was a solved problem and is a well-trodden path since ever -PWs,


everything has its use. PWs have major problems loadbalancing over 
multiple links.  Also the complexity of mpls + associated control plane 
is a drawback in situations.  Sometimes vxlan provides the required 
functionality.  Why use a more complicated protocol when a simpler one 
is a 100% match for your requirements?


Nick
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-30 Thread adamv0025
> Gert Doering
> Sent: Wednesday, April 29, 2020 4:22 PM
> 
> remember me...?  Fighting with this "simple task" since quite a few
weeks...
> 
> On Sun, Mar 29, 2020 at 11:52:03AM +0200, Gert Doering wrote:
> > I'm trying to make EVPN via VXLAN encapsulation work between two
> > ASR9001 (with the goal of eventually making it work between ASR9001
> > and Arista boxes, but right now I'm failing ASR9001 <-> ASR9001
already).
> 
Would it be feasible to go the EVPN over MPLS route? Arista might support
some basic MPLS forwarding (most Data-Centre switches do).

Never understood this VXLAN nonsense in DC universe (not the comics), in SP
space this was a solved problem and is a well-trodden path since ever -PWs,
VPLS now EVPN (even with traffic engineering possibilities -you know the
mice around elephant flows...)
MPLS to DCs is my answer.

adam

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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-30 Thread Mark Tinka



On 29/Apr/20 18:16, Saku Ytti wrote:

> Just because the new NPU can do 40x400GE, doesn't mean we don't still
> have applications for 1GE optimised devices with the same features and
> functions as the latest and greatest chip.

This!

Mark.
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-29 Thread Gert Doering
Hi,

On Wed, Apr 29, 2020 at 07:16:29PM +0300, Saku Ytti wrote:
> I think for Gert committing on such an old platform was matter of
> density, no need for 9901 density, 

Right.  9001 is officially still supported, and while I could use a
few more 10GE ports, it does what is needed in these POPs - namely,
transport about ~6-8 Gbit/s (!!!) with a decent number of 10 Gbit/s
ports (so we can go over 1 Gbit on each of them, even if the total
throughput is not all that much), full BGP table, proper incoming 
anti-DDoS rate limiting (the usual reflective UDP crap).

We're a small shop - our BGP edge is all 10Gbit/s, but due to 
"we want it distributed so no box has all the links" the total
traffic in the box is much much lower than it could do - so the 
extra bang of the 9901 and the accompanying price tag makes it not
very interesting.

gert
-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
 Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany g...@greenie.muc.de


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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-29 Thread Sander Steffann
Hi,

>> Oh, the joy of ASR9k… I'm so glad we have chosen another platform.
> 
> I think this is a bit unfair, of course vendors drop support to older
> platforms.

Oh, I'm not commenting on something not being supported on older hardware. 
That's totally understandable. What does annoy me is the lack of documentation, 
the CLI accepting commands that aren't implemented without warning and stuff 
like that. That combined with the whole mess with "your PSU and fan tray are 
not compatible with the 64-bit OS a few years ago" makes me avoid the platform.

Cheers,
Sander



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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-29 Thread Gert Doering
Hi,

On Wed, Apr 29, 2020 at 05:11:46PM +0100, Nick Hilliard wrote:
> Gert Doering wrote on 29/04/2020 16:21:
> > But anyway.  In case someone stumbles across this thread in the archives -
> > it's not implemented and not expected to work.
> 
> now that this is documented, it's a feature, right?

This is all just to save power consumption in the NPU!

gert

-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
 Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany g...@greenie.muc.de


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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-29 Thread Saku Ytti
On Wed, 29 Apr 2020 at 18:36, Sander Steffann  wrote:

> Oh, the joy of ASR9k… I'm so glad we have chosen another platform.

I think this is a bit unfair, of course vendors drop support to older
platforms. And this whole problem with tomahawk and lightspeed
transition isn't exactly new news, this has been known for 5years or
so. It's a balance between being an early adopter and being supported
for many years.

I think for Gert committing on such an old platform was matter of
density, no need for 9901 density, and I think this is where vendors
need to wake up. Less dense and lower speed interface doesn't mean we
can get away with TH1 or such ASIC, we still need full-blown NPU,
large FIB, large RIB, large buffers. Vendors should release 1GE, 10GE,
100GE, 400GE optimised front-plates with latest gen NPU when ever new
NPU happens, so what if you have 1% of NPU capacity in the
front-plate, that's good problem to have, you can maybe cost optimise
bit, by accepting from fab NPU which has lot of cores broken, or book
less off-chip memory for delay buffer (less front-plate, less off-chip
memory).

Just because the new NPU can do 40x400GE, doesn't mean we don't still
have applications for 1GE optimised devices with the same features and
functions as the latest and greatest chip.

-- 
  ++ytti
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-29 Thread Nick Hilliard

Gert Doering wrote on 29/04/2020 16:21:

But anyway.  In case someone stumbles across this thread in the archives -
it's not implemented and not expected to work.


now that this is documented, it's a feature, right?

Nick
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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-29 Thread Sander Steffann
Hi,

> After some more research, this is what came back today...
> 
>  "... Typhoon supports VXLAN EVPN features that were introduced up to
>   6.2.2.   Features that were introduced after 6.3.1 are not supported.
>   Ingress-replication bgp is not supported in Typhoon LCs"
> 
> Which is slightly annoying, given that this seems to be not documented
> anywhere AND that the ASR9001 is still not EOLed (as far as my google
> fu can find)...
> 
> But anyway.  In case someone stumbles across this thread in the archives -
> it's not implemented and not expected to work.

Oh, the joy of ASR9k… I'm so glad we have chosen another platform.

Cheers,
Sander



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Re: [c-nsp] EVPN/VXLAN on ASR9001 - BGP announcements not working

2020-04-29 Thread Gert Doering
Hi,

remember me...?  Fighting with this "simple task" since quite a few weeks...

On Sun, Mar 29, 2020 at 11:52:03AM +0200, Gert Doering wrote:
> I'm trying to make EVPN via VXLAN encapsulation work between two ASR9001
> (with the goal of eventually making it work between ASR9001 and Arista
> boxes, but right now I'm failing ASR9001 <-> ASR9001 already).

... so, whatever I did, it wouldn't work.  Unicast packets actually do
work (provided the B end is not using ESIs, in that case I can see them
in the "show evpn evi mac" table, but never in the hardware table), but
most prominently, flooding never worked in the

  local AC --> VXLAN peers

direction (while everything in BGP and EVPN and etc. was displaying the 
expected results).

So, long story short, TAC time.  XR TAC engineer (very competent) did
not bother much with looking at my RDs and ESIs and what not, but looked 
at NPU packet drops instead - and lo and behold, packet drops in the 
"RSV_DROP_IPM4_ING_RTE_DROP" category, which could be identified as 
"yes, these are the ARP packets that are not flooded".


After some more research, this is what came back today...

  "... Typhoon supports VXLAN EVPN features that were introduced up to 
   6.2.2.   Features that were introduced after 6.3.1 are not supported.
   Ingress-replication bgp is not supported in Typhoon LCs"

Which is slightly annoying, given that this seems to be not documented
anywhere AND that the ASR9001 is still not EOLed (as far as my google
fu can find)...

But anyway.  In case someone stumbles across this thread in the archives - 
it's not implemented and not expected to work.

gert
-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
 Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany g...@greenie.muc.de


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