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Re: [rare-dev] [gn4-3-wp6-t1-wb-RARE] [freertr] [RARE-users] technical difficulties at par0101 internet access


Chronological Thread 
  • From: mc36 <>
  • To: , Frédéric LOUI <>
  • Cc: Mohácsi János <>, Visky Balázs <>, "" <>, "" <>
  • Subject: Re: [rare-dev] [gn4-3-wp6-t1-wb-RARE] [freertr] [RARE-users] technical difficulties at par0101 internet access
  • Date: Mon, 29 Aug 2022 13:01:09 +0200

be prepared that as i last checked, the par0101 node does not have the latest
dpdk libs,
that is, once the connection restored,
(_whoever_ will do that finally) it'll self destruct itself, see attached
screenshot: the p4emu restarts continously
the reason behind is that the new p4dpdk*.bin is linked against the dpdk21.11
libs which is missing at par0101...

sorry, i misunderstood something, because i saw the clearnet working and you
said geant cage and never mentioned that it's just the p4lab...

and exactly that's what i still dont understand:
why did _not_ configured the par0101 to use geant's clearnet and went the
nmaas wireguard tunnel?

here is a way to do so:
proxy-profile clearnet
vrf clearnet
exit
client http-proxy clearnet
client name-proxy clearnet
and the default nat config from the one-liner to have the linux also have
internet

we have it everywhere, the one-line installer, in alex's tofino images, the
prebuilts, and so on...



On 8/29/22 10:58, Fr d ric LOUI wrote:
Hi,

As it is a problem related to G ANT P4 lab I m stripping rare-users and

If you feel that it is related to these mailing list feel free to add them
again.

As mentioned PAR0101 problem was under G ANT responsibility.
The problem has been identified and confirmed my observation but also your
observation WRT PAR0101 inband management access working.
(Cf check thread below)

G ANT support ticket [TT#2022082434002594]

And here is their feedback:


<FEEDBACK FROM G ANT support>

Le 25 ao t 2022 07:19, GEANT Support <> a crit :

Dear Frederic,

The servers need repatching, following the move to a new location within the
data centre. Unfortunately this was not possible to do during the move due
to unforeseen circumstances. Engineers are scheduled to attend site on Monday
to complete these tasks.

Please let us know if you require further information at this time. We will
provide further updates as they become available.

Kind Regards,

William Barber
G ANT Operations Centre

Email:
Tel: +44 (0)1223 733033

GEANT CERT - PGP Key ID: 0x99833085 / Fingerprint: 3CBF F211 8305 635D 5839
BB27 BA6B F34A 9983 3085
Networks Services People
http://www.geant.org G ANT Vereniging (Association) is registered with the Chamber of Commerce in Amsterdam with registration number 40535155 and operates in the UK as a branch of G ANT Vereniging. Registered office: Hoekenrode 3, 1102BR Amsterdam, The Netherlands. UK branch address: City House, 126-130 Hills Road, Cambridge CB2 1PQ, UK.

24/08/2022 10:15 - Fr d ric LOUI wrote:
Please note that the RARE P4 switch is working well.



What is not working is PAR-BMS4 internet access.
Accessing PAR-BMS via guacamole is OK and we see the Linux interface is UP

Just in case please allow me to add Milos and Alexander who are GTS subject
matter
expert.

Maybe they can provide more details on what is broken at GTS_hardware@PAR

All the best,
Frederic

Le 24 ao t 2022 12:18, GEANT Support <> a crit :

Dear Frederic,

Sorry for the delay in this. We're currently working to try and resolve the
connectivity issues for the RARE servers in Paris and awaiting engineers
locally to be available to assist in this. We are chasing this at the moment
and will update you when we have durther information.

Kind Regards,

William Barber
G ANT Operations Centre

Email:
Tel: +44 (0)1223 733033

GEANT CERT - PGP Key ID: 0x99833085 / Fingerprint: 3CBF F211 8305 635D 5839
BB27 BA6B F34A 9983 3085


</END FEEDBACK FROM G ANT support>

By the way I cross check with NMaaS support team, and they were not involve
nor myself in shutting down the tunnel whatsoever.
Their firewall logs showed that the tunnel went down ~32 days ago which is
roughly when G ANT initiated cage move.

So the problem is identified and handled by G ANT, further investigation is
not needed from your part.
Thanks your help though !

Frederic

Le 28 ao t 2022 09:21, mc36 <> a crit :

and finally, it's a wg tunnel and at the moment i really have questions about
it...
i avoided using ec unless i absolutely had to with a reason: as it turned out,
most of the curves are backdoored ( https://safecurves.cr.yp.to/ ) and what
remains,
provides not too much bits and under the hood, and ec is just a
multiplication...
more about the question here:
https://lists.geant.org/sympa/arc/rare-dev/2022-08/msg00082.html



On 8/28/22 08:58, mc36 wrote:
okkk so just to summarize it up a bit for easier understanding:
-frederic said to me that it's a geant issue after a cage movement
-he configured the box to use the wg to nmaas for the oob's default
and as the wg code last changed 24 days ago (*) and the internet access is
down for 12 days:
he simply asked the nmaas friends of him to shut down the tunnels
*:
https://github.com/rare-freertr/freeRtr/blob/master/src/net/freertr/clnt/clntWireguard.java
On 8/28/22 08:11, mc36 wrote:
so we have a proverb for this in hungary: huzogatod a faszomon a bort de nem
nyeled le


On 8/28/22 08:00, mc36 wrote:
clearly frederic the fuck are you doing?!?!?!?!?!


{"date":"2022-08-25T11:31:40.000Z","who":"fl","text":"BTW PAR0101 is down, GEANT moved their cage physcally in PAROS and
obviously forgot things","flags":["incoming"],"remoteId":""}
{"date":"2022-08-25T11:31:43.000Z","who":"mc36","text":"hmm, then imho you'll send and i'll
receive","flags":["outgoing"],"remoteId":""}
{"date":"2022-08-25T11:32:11.000Z","who":"mc36","text":"par0101 it'll recover later
right?","flags":["outgoing"],"remoteId":""}
{"date":"2022-08-25T11:32:17.000Z","who":"fl","text":"I'm working with GEANT NOC in order to resolve that
issue","flags":["incoming"],"remoteId":""}




On 8/28/22 07:57, mc36 wrote:
okkk, btw at that point im pretty sure it was not geant btw.... :))))))))))

On 8/28/22 07:39, mc36 wrote:
well, so the box will die for sure as geant recovers but if you used
client proxy clearnet
instead of
client proxy oob
which, is a wg to poznan then you wouldn't have to reinstall it from
scratch...
clearly, what you had here is not oob but a tunneled one...


On 8/28/22 07:34, mc36 wrote:
well it cannot be a routing issue :))))))))))))))))))))))))

PAR0101#ping 1.1.1.1 vrf CLEARNET
pinging 1.1.1.1, src=null, vrf=CLEARNET, cnt=5, len=64, df=false, tim=1000,
gap=0, ttl=255, tos=0, sgt=0, flow=0, fill=0, sweep=false, multi=false
!!!!!
result=100.0%, recv/sent/lost/err=5/5/0/0, took 41, min/avg/max/dev
rtt=8/8.0/8/0.0, ttl 58/58.0/58/0.0, tos 164/164/164/0.0
PAR0101#ping 195.111.97.109 vrf CLEARNET
pinging 195.111.97.109, src=null, vrf=CLEARNET, cnt=5, len=64, df=false,
tim=1000, gap=0, ttl=255, tos=0, sgt=0, flow=0, fill=0, sweep=false,
multi=false
!!!!!
result=100.0%, recv/sent/lost/err=5/5/0/0, took 157, min/avg/max/dev
rtt=31/31.4/32/0.2, ttl 249/249/249/0.0, tos 0/0.0/0/0.0
PAR0101#




On 8/28/22 07:33, mc36 wrote:
my bad, i accidentally pinged in the wrong vrf, here is the good one:

PAR0101#show ipv4 route CLEARNET
typ prefix metric iface
hop time
S 0.0.0.0/0 1/0
sdn1.666 62.40.109.30 00:09:39
C 10.10.10.0/30 0/0 hairpin6661
null 11d19h
LOC 10.10.10.1/32 0/1 hairpin6661 null
11d19h
C 62.40.109.30/31 0/0 sdn1.666
null 00:09:39
LOC 62.40.109.31/32 0/1 sdn1.666 null
00:09:39

PAR0101#
PAR0101#ping 62.40.109.30 vrf CLEARNET
pinging 62.40.109.30, src=null, vrf=CLEARNET, cnt=5, len=64, df=false,
tim=1000, gap=0, ttl=255, tos=0, sgt=0, flow=0, fill=0, sweep=false,
multi=false
!!!!!
result=100.0%, recv/sent/lost/err=5/5/0/0, took 4, min/avg/max/dev
rtt=0/0.6/1/0.2, ttl 64/64.0/64/0.0, tos 0/0.0/0/0.0
PAR0101#

so from this point, i cannot say a word.... well i could.... :)


On 8/28/22 07:25, mc36 wrote:
so helping to the irc question of you, that geant is unable to provide
internet access for 12 days now...
fortunately the inband mgmt still works so you can help them find the issue
with the vlan666...
seemingly we have some traffic and the good arp entry so it must be a routing
or acl issue at geant mx...:)))))))))
bad news is that as today i unhold the dpdk21 packages and the box haven't
got the dpdk21.11 so it'll self destruct as geant recovers.... :(


PAR0101#show platform
freeRouter v22.7.26-cur, done by cs@nop.

name: PAR0101
hwid: Dell Inc. PowerEdge R430/0CN7X8
hwsn: null
uptime: since 2022-08-16 11:33:15, for 11d19h
reload: code#2=upgrade finished
rwpath: /rtr/
hwcfg: /rtr/rtr-hw.txt
swcfg: /rtr/rtr-sw.txt
cpu: 40*amd64
mem: free=519m, max=1073m, used=1073m
host: Linux v5.17.0-2-amd64
java: Debian v19-ea @ /usr/lib/jvm/java-19-openjdk-amd64
jspec: Oracle Corporation (Java Platform API Specification) v19
vm: Debian (OpenJDK 64-Bit Server VM) v19-ea+32-Debian-1
vmspec: Oracle Corporation (Java Virtual Machine Specification) v19
class: v63.0 @ /rtr/rtr.jar

PAR0101#show interfaces summary
interface state tx rx
drop
template1 admin 0 0
588
template666 admin 0 0
0
loopback0 up 2402 0
0
loopback20965 up 0 0
0
ethernet0 up 45335 115091610
0
ethernet1 up 780 4004
4004
hairpin6661 up 486+0 486+0
0+0
hairpin6662 up 486+0 486+0
0+0
sdn1 up 44351+0
114894232+0 0+0
sdn1.102 up 3628+0 3958+0
0+0
sdn1.103 up 26429+0 16116+0
0+0
sdn1.666 up 11930+0 114479534+0
0+0
sdn2 admin 0+0
0+0 0+0
tunnel123 up 670+0 0+0
0+0
tunnel2075 up 5462+0 4238+0
0+0

PAR0101#
PAR0101#show running-config interface sdn1.666
interface sdn1.666
description AMT RLY INTERNET facing interface
monitor-buffer 8192000
vrf forwarding CLEARNET
ipv4 address 62.40.109.31 255.255.255.254
ipv6 address 2001:798:dd:6::6 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc
ipv6 enable
no shutdown
no log-link-change
exit
!

PAR0101#show ipv4 arp sdn1.666
mac address
time static
a8d0.e5f7.8717 62.40.109.30 00:00:11 false

PAR0101#
PAR0101#ping 62.40.109.30 vrf oob
pinging 62.40.109.30, src=null, vrf=oob, cnt=5, len=64, df=false, tim=1000,
gap=0, ttl=255, tos=0, sgt=0, flow=0, fill=0, sweep=false, multi=false
.....
result=0.0%, recv/sent/lost/err=0/5/5/0, took 5001, min/avg/max/dev
rtt=10000/0.0/0/0.0, ttl 256/0.0/0/0.0, tos 256/0.0/0/0.0
PAR0101#


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