Switches Juniper

[Jack Bates]

On 10/19/2011 7:28 AM, Mark Tinka wrote:
> I think you (and the OP) meant EX. ERX is, as you know, the BRAS side 
> of things (Unisphere, et al). AFAIK, only the EX2500 was an 
> acquisition. The rest of the EX line, particularly the launching 
> EX3200/4200 were all built from the ground-up. 
Ahh, my understanding was the ERX was acquired, too. Good to know.

> 3) EX is enterprise level, definitely not carrier grade,
> and it has an extra license to support ISIS/BGP (though
> IPv6 is a freebie)
> I suspect the OP was talking about the EX3200. It's possible
> it requires an IPv6 license, but I'm running v6 on them with
> no issue. IS-IS complains of needing a license, though, as
> does BGP, but it still runs.
I've only had the EX4200 for a year or so. I've been running IPv6 on it 
since day 1. It has an honor/nag license on it's Advanced IP services 
license.  It seems to have stabilized better in later 10.x line, and the 
dual root is nice, plus the inclusion of ingress IPv6 firewall filters.

> IOS XR now has comparable support.
Yeah, Cisco never called me back. Guess they don't like us anymore since 
we had the bad sales guy (and a bad CTO) that bought millions of junk 
(Serial A of VS3, really?) and both got fired and Cisco ate their 
hardware. Decades of working with IOS doesn't give me have much 
confidence in IOS XR, though.

>> issu
> Never been sold by the ISSU circus. I still run upgrades in
> maintenance windows :-).
Oh, definitely. Junos even broke ISSU for me from 9.4 to 10.4. I know it 
was something in ISIS that broke NSR, but never did hear the specific. 
Wonder if it was my IPv6 config, as I thought it strange that small old 
me was the first reporting it and they had 10.4 out already at the time.

However, it is really nice when it works even during maintenance 
windows. I like the windows for "just in case", but I still prefer to 
not have an outage, and definitely prefer not to flap routes too many 
times. People do still dampen out there, and there isn't 1am exclusions. lol

> You know what, I've never really checked, but I have an inkling 
> feeling Cisco don't support that anymore in their newer kit, e.g., 
> CRS, ASR9000, e.t.c. Let me ask my SE. Cheers, Mark. 

You could be right on the CRS/ASR, though I've heard they've had a lot 
of problems with the ASR line.

My current fun playing is actually with LFA, as I'd prefer to retain 
50ms cutovers without having to put my normal ISP traffic on  MPLS, 
especially since implemented MPLS is not very IPv6 friendly and 6PE is a 
nightmare if all you want to do is retain uptime for normal global 
traffic. Not that my SLAs to DSL customers require it. It's just really 
cool.


Jack