[j-nsp] 2x EX4200 Virtual Chassis Layer2/3 - Which JunOS Version ?

[Bill Blackford]

> Also important to note: You might not plan to carry the full table, but if you plan to accomplish that by rejecting any route from your ISP other than the default, you'll have a performance problem when the EX has to reject thousands (full table now at ~350k routes) of routes. Be sure to have your ISP send you JUST the default. ;)

+1

I use EX4200's in some aggregation roles. I found that I had to filter
routes on my borders sitting above these. For what ever it's worth, I
had to do the same for Cisco LAN switches (3750G) in agg roles too.

-b





On Fri, Mar 4, 2011 at 8:37 AM, Paul Zugnoni <paul.zugnoni at onlive.com> wrote:
> Hope a 2-week later reply is still relevant for you:
>
> I've had good experience with 10.0S1.1 and 10.1R3.7 in setups that include your 3 requirements below. As noted earlier in the thread, upgrades on a EX VC are not hitless, so keep that in mind. The VC will not provide HA for a code upgrade.
>
> Also important to note: You might not plan to carry the full table, but if you plan to accomplish that by rejecting any route from your ISP other than the default, you'll have a performance problem when the EX has to reject thousands (full table now at ~350k routes) of routes. Be sure to have your ISP send you JUST the default. ;)
>
> Don't forget to get the right license to run BGP on the EX.
>
> Paul Z
>
> On Feb 19, 2011, at 08:13 , Giovanni Bellac wrote:
>
>> Hello all
>>
>> I have now spend a lot of time to find out the optimal version of JunOS for our
>> newly ordered 2x EX4200s.
>>
>> 1) We will run a 2x EX4200 Virtual Chassis.
>> 2) We will run BGP default routes (NO full table) and announce our /21.
>> 3) We will connect our rack-switches to the Virtual Chassis.
>>
>> So, we will do Layer2 and some (basic) Layer3.
>>
>> Should we use the latest service release of 10.0 (= 10.0s11 / 10.0s12) or use
>> directly 10.4R2.6 ?
>>
>> My eyes are on 10.0 and 10.4 because these are longer supported releases.
>>
>> Thank you in advance.
>>
>> Regards
>> Giovanni
>>
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>
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-- 
Bill Blackford
Network Engineer

Logged into reality and abusing my sudo privileges.....