[j-nsp] Why should I not buy an MX?

Sat Nov 8 15:56:04 EST 2008

We have had kind of mixed experience with this platform. Used to M7i/M10i
which seems inheritantly more stable.

A couple of log entries that really fill up the logs;

kernel: RT_PFE: NH IPC op 35 (CHANGE FLOOD NEXTHOP) failed, err 1 (Unknown)
rpd[4786]: RPD_OS_MEMHIGH: Using 2151293 KB of memory, 101 percent of
available

Oh, and
rpd[4786]: RPD_ABORT: abort rpd[4786] version 8.5R3.4 built by builder on
2008-04-24 03:46:20 UTC: Cannot allocate memorytask_page_set_brk:
brk(0x8879c000): Cannot allocate memory

which probably resulted in

routing (PID 4786) terminated by signal number 6. Core dumped!

Half an hour ago..

/BT

-----Opprinnelig melding-----
Fra: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] På vegne av sthaug at nethelp.no
Sendt: 8. november 2008 15:03
Til: rubensk at gmail.com
Kopi: billf at mu.org; juniper-nsp at puck.nether.net
Emne: Re: [j-nsp] Why should I *not* buy an MX?

> >> Because it's expensive compared to possible alternatives outside
> >> J-Land, including, but not limited to, Force-10.
> >
> > force10's cost advantage is chipped away at by the OP's IPv6
requirement.
> 
> Yes, IPv6 and MPLS are not currently supported (and they might be or
> not, in the future) by Force-10. Pricewise that would lead to choosing
> Cisco Cat6K with or without DFCs depending on throughput requirements.

Cisco Cat6K with traditional "LAN" type cards = globally significant
VLAN IDs. That alone throws the solution right out the window for us.
There are many other features that Cisco Cat6K with LAN type cards do
not support, for instance dual tagged VLANs.

It all depends on your requirements, of course. For us, the MX looks
very attractive, both featurewise and pricewise. But again, we use it
as a router, now a switch.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no
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