To take a @packetlife lab (community lab), I prepare a little scenario about BGP and other features such as :
My lab looks like :
Level 2 :
Level 3:
BGP :
In this day of 29 March I have a thought for all the missing people missing horribly on those who remain on this earth. I thought this day for my father who died last year, but I think of him every day. May God bless you.
Life must go on, but it’s not the same without you. But I hope it will bring pleasant surprises to change.
Gagnez un Tour du Monde personnalisé et voyagez dans vos 10 pays préférés !
Vous avez bien compris, tout est GRATUIT !
Voici une petite astuce (ok à deux balles) afin de faire avec votre Linux préféré la même chose que vous faîtes avec votre IOS (Cisco) via la commande :
R# ping your_host size 1520 df-bit
Vous devrez faire avec votre linux :
LinuxBox:~# ping -M do -s 1520 your_host
[...]
LinuxBox:~#
Et avec un OpenBSD :
OpenBSDBox# ping -D -s 1520 your_host
I am lot of OpenBSD as servers, but I never take time to put it on my work laptop. This is done on this afternoon :)
I have a nice laptop under OpenBSD-4.8 with fluxbox.
I have before I install OpenBSD these systems have been on my hard drive :
I have used :
With all these tools my laptop is happy on this friday afternoon.
Good to take time to work at home without stress and under OpenBSD system.
An interesting useful tool available in IOS 12.4(20)T and prior : Embedded Packet Capture (EPC). This tool is useful to avoid configure SPAN and RSPAN to be able to capture and analyze trafic.
You can now do it by means of defining a capture buffer, then a capture point, link them and start the capture.
Then you can upload this capture (in pcap) and read analyze it with wireshark :)
R1#monitor capture buffer TEST_BUFFER size 512 max-size 128 circular
R1#sh monitor capture buffer all parameters
Capture buffer TEST_BUFFER (circular buffer)
Buffer Size : 524288 bytes, Max Element Size : 128 bytes, Packets : 0
Allow-nth-pak : 0, Duration : 0 (seconds), Max packets : 0, pps : 0
Associated Capture Points:
Configuration:
monitor capture buffer TEST_BUFFER size 512 max-size 128 circular
Then configure the capture point :
If you are in extjs application designing and coding, you might need to use use ‘Ext.util.Cookies.*’ function.
You can :
In theory you can delete cookie by means of ‘clear’ function.
In practice, you should use :
Ext.util.Cookies.set('my_cookie', null, new Date("January 1, 1970"));
Ext.util.Cookies.clear('my_cookie');
Because you can be faced to a problem where you cannot delete your cookie and cannot understand why…
La version 6.0 est sortie en ce dimanche :)
De nombreux dist-upgrade vont être effectués durant la semaine…
I think it has been really often done in the past, but for fun :
For those of you whom use a lot of xterm, I think it have happen you mistake tape an ’ena’ command in your sh friend shell program :)
It can be funny to have a result on your stdout other than :
Commande « ena » non trouvée, vouliez-vous dire :
La commande « enna » issue du paquet « enna » (universe)
La commande « eva » issue du paquet « eva » (universe)
La commande « enca » issue du paquet « enca » (universe)
La commande « ent » issue du paquet « ent » (universe)
La commande « env » issue du paquet « coreutils » (main)
ena : commande introuvable
It can be funny to have :
If you meet a IOS crash bug such as :
Pool: Processor Free: 164996 Cause: Memory fragmentation
Alternate Pool: None Free: 0 Cause: No Alternate pool
-Process= "HQM Stack Process", ipl= 0, pid= 112
-Traceback= 26C41C 31CB0C 3222C8 B1FDF0 B08F50 35B764 351D2C
%SYS-2-MALLOCFAIL: Memory allocation of 36688 bytes failed from 0xB1FDEC, alignment 8
Pool: Processor Free: 164996 Cause: Memory fragmentation
Alternate Pool: None Free: 0 Cause: No Alternate pool
-Process= "HQM Stack Process", ipl= 0, pid= 112
-Traceback= 26C41C 31CB0C 3222C8 B1FDF0 B08F50 35B764 351D2C
And your environnment is MPLS/OSPF on this kind of hardware, you can be aware of that : When you add a new OSPF neighbor to mesh your network, you can meet memory problem and crash.