i like this thing :)

rossonieri#1

a little bit out of the topic,
but i thought this could be an interesting discussion for some who likes juniper stuff

discovering/exploring product features is the most greatest thing that ever happened to me, following my ER track , so i start reading these bunch of juniper product/tech docs - and i've spotted a tiny little topic called logical-router.
JUNOS Release 8.5 Feature Guide

i've found it very interesting i guess, even though not all features can be enabled using LR (depends on junos version) - but, most of important stuff like routing and the like can fully operate under an LR.


the questions :
1. this LR compares to Solaris : Zones or Xen emulated?
2. if junos has been build upon FreeBSD - then which BSD software can emulate this LR? Xen? Dom0 DomU?
3. if it was emulated based on Xen Domain, then should the Virtual Router/VR routing instances build upon this too?

any opinion appreciated, thanks

Aldur

I have no idea about your questions but I do have to say that logical routers rock when it comes to studying for the certs. I remember when I was studying for the IP, I had 3 olives and all the routers needed was split up between those 3 via LR's. Granted I had more then 3 olives at the time but I decided to do this to cut down on the heat that they were generating... It was summer time in Utah, around 100 F, and no air conditioning in my little guest house that I lived in. Anything creating heat was to much

Even now I still use logical routers with the olives that I use. They make great outside/other AS routers that help simulate a real environment. Plus since they are outside routers you configure them once and just let them pass traffic, it's a beautiful thing

rossonieri#1

aldur,

It was summer time in Utah, around 100 F, and no air conditioning in my little guest house that I lived in. Anything creating heat was to much

hahaha, well, its a free work out but using different gym LOL
not to mention saving the electric bill, double saving!
and, you've passed the lab with lower cost considering above, so - it was a triple saving! LOL hahahahaha )

just kidding my friend )

Aldur

Very interesting, when I was playing around with LR's and VRRP I didn't see this issue, could be that I was using 7.2 or possible the use of a different switch. What kind of switch did you use during the VRRP test?

Aldur

I think I have a cisco 2950 XL for the switch that I used and I'm also using hardware olives which will make a difference.

Hmm, interesting that you can't configure LR's in 8.0 with quemu, my hardware olives are running 8.0R2 and have about 10 or 12 LR's configured between them.

I'm guessing it's just a quemu problem, you got one more level of virtualization going on there Especially with the commit issues that your seeing.

Let me know how BGP and OSPF goes with the LR's.

Aldur

Very interesting, I know a guy who had troubles getting ISIS adjencies up until he put the links in P2P but I had no idea that this problem would exist with LR's and OSPF.

Nice catch there

Aldur

could be the MTU, well, probably not to tell the truth, the adjencies wouldn't form if it was an MTU problem. Did you by chance have any traceoptions running while you had these problems?

zoidberg

you're running a couple virtual olives on a pc right? i had issues maintaining adjacencies and slow route exchange or slow db sync when doing this with just a couple olives running on my desktop. i think the issue is cpu and memory. i was dropping packets, including hellos, between the two virtual machines on my pc. i assume that's the problem? i never had these issues when running olives on hardware.