Telecom

$ whois -h whois.ripe.net POEM-RIPE55-SONG
[...]

% Information related to 'POEM-RIPE55-SONG'

poem: POEM-RIPE55-SONG
form: FORM-PROSE
descr: At his first RIPE meeting, Gary wrote this and performed at
descr: the closing plenary. It was truly awesome.
descr: http://www.youtube.com/watch?v=_y36fG2Oba0
descr:
text: A long long time ago
text: I can still remember
text: when my laptop could connect elsewhere.
text:
text: And I tell you all there was a day
text: the network card I threw away
text: had a purpose - and it worked for you and me.
text:
text: But 18 years completely wasted
text: with each address we've aggregated
text: the tables overflowing
text: the traffic just stopped flowing...
text:
text: And now we're bearing all the scars
text: and all my traceroutes showing stars.
text: The packets would travel faster in cars
text: the day the routers died.
[... continued ...]

I don’t really easily documentary to configure BFD (RFC5880 and you could read precedent blog-post : BFD : Bidirectional Forwarding Detection (RFC5880)) between IOSXE and IOSXR boxes.

Here it comes :-)

 

IOSXE : 

R0# show run | sec bfd 
bfd fast-timers-on-slow-interface
bfd-template single-hop BFD
   interval min-tx 200 min-rx 200 multiplier 3
[...]
R0#show run int port-ch 14
Building configuration...

Current configuration : 373 bytes
!
interface Port-channel14
description *** Vers R1_Be10000 ***
mtu 9202
ip address 172.18.255.29 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 10 md5 7 XXXXXXXXXXXXXXXXXX
ip ospf network point-to-point
ip ospf bfd
ip ospf cost 20000
no negotiation auto
mpls ip
port-channel bfd destination ipv4 172.18.255.30 BFD
end

R0#

IOS XR : 

J’ai eu de bonnes intentions en début d’années de produire du contenu en Français sur différents sujets réseaux et télécoms de niveau basiques, mais j’avoue que cela s’est vite arrêté.

Le but était de fournir tout en un :

• Video explicative ;
• Une fiche d’étude rapide au format cheatsheet ;
• Un guide de travail ;
• Un accès à un lab guidé

Bon j’avoue cela prend énormément de temps et d’autres projets personnels sont venus s’intercalés.

If as me you have EVE-NG (2.0.3) and lab some Cisco XRV9K-Full on a virtualized box running AMD Ryzen processor, you have probably encountered problem to start the image. After reading lot of website, it seems the answer is change the command line.

My original command line is :

-enable-kvm -smbios type=1,manufacturer="cisco",product=\"Cisco IOS XRv 9000\",uuid=[...] -cpu host

I correct to :

-enable-kvm -smbios type=1,manufacturer="cisco",product="Cisco IOS XRv 9000",uuid=[...] -cpu qemu64,+ssse3,+sse4.1,+sse4.2

I am happy to share that I have achieved something that could be normal as usual but important to me : use different vendor in certification tracks.

I have passed JNCIA-Junos.

If you are newbie snmpb user. I used snmpb mib brower to check accros some SNMPv3 IOS XR config, you can be faced to :

You must only right click to white window such as :

That’s it ! Have fun…

If you are familiar with IOS XR and JunOS, it lacks a rollback to IOS and IOS XE. You can do it with “archive” such as :

1. Configure where your archive will be stored.
2. Say to your OS to “archive” at a point
3. Configure your router with a “revert timer”
4. Confirm if it is ok for you

Here we go in details now :

1. Configure where your archive will be stored.

Router# conf t
Router(conf)# archive
Router(conf-archive)# path bootflash:myconfig
Router(conf-archive)# maximum 10
Router(conf-archive)# end
Router# wr

2. Say to your OS to “archive” at a point

Thank you to gabanz (LinkedIn Profile)from CloudFlare to have developped : https://github.com/gabanz/cf-looking-glass

Simple and efficient, two traceroutes from sin02(singapore) and nrt01 (?) :

It will be with great pleasure to go tomorrow to Frnog 34. Happy yo see old friends there and new one perhaps at beer event :)

Hey,

For (perhaps) futur projet I read different documentations around Bird, FRR Routing, … and I am really happy to see in FRR Routing v8.0 the new ‘pathd’ daemon, which implement SR (Segment Routing). It is really cool to see this.

There is others new feature which have been implemented in this release and are major IMHO.

• TI-LFA for OSPF and IS-IS (great too for SR) ;
• VRF for OSPFv3 ;
• EVPN full-implementation.

It is really great work !!!