Overblog Suivre ce blog
Administration Créer mon blog
10 avril 2012 2 10 /04 /avril /2012 16:58

Small tips for analyse the fabric stats. I mean packets stats (IN/OUT/Drops) between each PFE and the Fabric. Usually fabric stats can be observe by using the following cli command. Remember, that there are only 2 streams at fabric level: High and Low...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans Tips&Tricks
commenter cet article
8 mars 2012 4 08 /03 /mars /2012 16:15

OAM LFM: Part 2 - Junos implementation
This post covers: - OAM implementation on Junos - Default value of OAM LFM parameter (in relation with the Part 1) - Configuration / understanding: Neighbor discovery phase - Configuration / understanding: Remote loopback operation - Configuration / understanding:...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans Posts
commenter cet article
5 mars 2012 1 05 /03 /mars /2012 23:05

OAM LFM: Part 1 - The theory
1/ Some terms, before: OAM for Operations Administration and Maintenance LFM for Link Fault Management EFM for Ethernet in the First Mile 2/ Introduction: OAM is intended for point-to-point or emulated p2p Ethernet links. The OAM block is optional, so...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans Posts
commenter cet article
14 février 2012 2 14 /02 /février /2012 14:43

I've scheduled to write a post regarding Junos load balancing but I must carry out more tests before writing it. So I decided to post my code of a troubleshooting 'op' script which allows to display in one command all protocols related information of...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans Posts
commenter cet article
1 février 2012 3 01 /02 /février /2012 20:48

Sometimes you may need to have some additional interface statistics, for example the amount of packets per range of sizes. You can use netflow to collect some stats like these. But if you don't have netflow on all your router interfaces or for troubleshooting...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans Tips&Tricks
commenter cet article
31 janvier 2012 2 31 /01 /janvier /2012 09:00

MX960 and E-SCB: Full Power
The aim of this post is to provide the detailed procedure for upgrading the Switch Control Boards (SCB) of an MX960 chassis in order to overcome some limitations of the old SCB that are : - Unable to use the full load of the 16x10GE card and to keep fabric...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans Posts
commenter cet article
21 janvier 2012 6 21 /01 /janvier /2012 16:59

Sometimes it may be very useful to monitor only protocol and link events especialy during maintenance windows. Hereafter, I monitor : - Link UP/DOWN - ISIS adj UP/DOWN - OSPF neighbor UP/DOWN - LDP neighbor/session UP/DOWN - MPLS LSP UP/DOWN - RSVP neighbor...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans Tips&Tricks
commenter cet article
18 janvier 2012 3 18 /01 /janvier /2012 21:10

I've planned to write posts during the next weeks regarding these subjects: - Enhanced-SCB's detailed migration procedure on MX960: get the full power of your MX and your 3D cards. - Understanding Hashing / Load-balancing on MX: for ichip/TRIO based cards....
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans News
commenter cet article
16 janvier 2012 1 16 /01 /janvier /2012 21:06

Hello, I've opened this blog to share my passion for networking and especially networking on Junos platform. I provide technical information only based on my experience, my tests in Lab and the public documentations. I'm a french guy and my english is...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans News
commenter cet article
16 janvier 2012 1 16 /01 /janvier /2012 21:00

Multicast Replication
I spent time on Junos routers (T and MX series) to understand how multicast replication works. I carried out some tests in lab to better understand how the multicast replication is done at the PFE level. This study was very useful for some multicast issues...
Lire la suite

Partager cet article

Repost 0
Published by junosandme - dans Posts
commenter cet article