Juniper M10i sufficient for BGP, or go with M20?
I don't know much about Juniper but I'm about to learn with a new job. If I'm going to take full routes from a couple of upstreams and have a couple of peers will the M10i (768M max) be enough or is the M20 (2048M max) a better choice. Layout here is such that I'd expect to use a single quad gigabit port ethernet blade in each of a pair of M10i/M20 to achieve redundancy. Is there a pricing resource for this stuff online some where? I do *not* want to hear from any sales people over this comment ...
On 13-May-2007, at 15:33, Neal Rauhauser wrote:
I don't know much about Juniper but I'm about to learn with a new job. If I'm going to take full routes from a couple of upstreams and have a couple of peers will the M10i (768M max) be enough or is the M20 (2048M max) a better choice.
I think the quick answer based on just that requirement is "an M10i will do fine". I am not aware that Juniper sell a router which will struggle with a default configuration to handle a few views of the full table, but perhaps my rhetorical spectacles are unreasonably rosy right now.
Layout here is such that I'd expect to use a single quad gigabit port ethernet blade in each of a pair of M10i/M20 to achieve redundancy.
Is there a pricing resource for this stuff online some where? I do *not* want to hear from any sales people over this comment ...
Try checking the j-nsp archives at <https://puck.nether.net/pipermail/ juniper-nsp/>. Good luck with not hearing from sales people. Joe
I don't know much about Juniper but I'm about to learn with a new job. If I'm going to take full routes from a couple of upstreams and have a couple of peers will the M10i (768M max) be enough or is the M20 (2048M max) a better choice. Layout here is such that I'd expect to use a single quad gigabit port ethernet blade in each of a pair of M10i/M20 to achieve redundancy. The M10i is perfectly capable of handling the full table and then some. The only question is whether you want to buy more just in case your needs grow.
That said- Last time I spoke to a Juniper rep I was told that their 4 port GigE card for the M7/M10 is oversubscribed 4:1- ie the backplane connection is only gigabit. Check into that if it is important to you. I may have been misled or things may have changed- frankly I didn't look into it much as an equivalent Cisco solution with additional ports came in at 1/4 of the price :(
Is there a pricing resource for this stuff online some where? I do *not* want to hear from any sales people over this comment ... The pricing for all of this stuff is so ludicrously flexible it isn't funny. If the company wants you as a client (for marketing reasons or whatever) then suddenly a $50k router becomes a $25k (or less) router. If you point out a competitors router is xyz dollars less you may suddenly find yourself with yet another discount. Get quotes from everyone, compare features, and don't hesitate to push for better pricing from everyone.
-Don
On Sun, 13 May 2007, Donald Stahl wrote:
I don't know much about Juniper but I'm about to learn with a new job. If I'm going to take full routes from a couple of upstreams and have a couple of peers will the M10i (768M max) be enough or is the M20 (2048M max) a better choice. Layout here is such that I'd expect to use a single quad gigabit port ethernet blade in each of a pair of M10i/M20 to achieve redundancy. The M10i is perfectly capable of handling the full table and then some. The only question is whether you want to buy more just in case your needs grow.
That said- Last time I spoke to a Juniper rep I was told that their 4 port GigE card for the M7/M10 is oversubscribed 4:1- ie the backplane connection is only gigabit. Check into that if it is important to you. I
he said 'blade' to which I read '4 pics in a FPC'... maybe it's a terminology thing? Neal?
choice. Layout here is such that I'd expect to use a single quad gigabit port ethernet blade in each of a pair of M10i/M20 to achieve redundancy.
he said 'blade' to which I read '4 pics in a FPC'... maybe it's a terminology thing? Neal? The M10i doesn't have an FPC blade per se (it's built into the chassis) so in the context of the M10i I assumed "single quad gigabit port ethernet blade" meant a single card- though I could definitely be wrong. My knowledge of the Juniper line is sadly pretty limited.
-Don
If I remember correctly from M5/M10, they uses FEB (built-into-Chassis FPC version), and each FEB (row) has restriction up to 3.6Gbps rate. So total aggregated bandwidth can not go over this limit. If you install 4GE (4 of 1-port GigE PIC) in same FEB row, you can use 0.9Gbps in average per PIC with max 1Gbps. :-) Also, 4GE PIC (single PIC with 4-port GigE) has limitation for up to 1Gbps aggregated bandwidth, too. M7i/M10i has redundant RE options from M5/M10. So no differencce except M7i with built-in GigE into chassis. If you really wants to use GigE per trunk, you may have to use PE-1GE-SFP instead of single quad-port GigE PIC. For memory, it may be sufficient with 768MB memory for now, But if I were you, I would go with 1.5GB with new RE. It's pain in the XXX to add more memory later from production system. If you are concerned about the budget, you can use after-market memory. Hyun Donald Stahl wrote:
choice. Layout here is such that I'd expect to use a single quad gigabit port ethernet blade in each of a pair of M10i/M20 to achieve redundancy.
he said 'blade' to which I read '4 pics in a FPC'... maybe it's a terminology thing? Neal? The M10i doesn't have an FPC blade per se (it's built into the chassis) so in the context of the M10i I assumed "single quad gigabit port ethernet blade" meant a single card- though I could definitely be wrong. My knowledge of the Juniper line is sadly pretty limited.
-Don
If you read up on juniper.net you'll see that in addition to the one gigabit port PIC there is now a card with four SFP ports but only a gigabit available via the backplane slot. This oversubscription of the slot is good when you have several little switches you wish to drive and don't need the full line rate. Sorry for the PDF but it seems to be the only way to see the information: http://www.juniper.net/products/modules/100163.pdf Hyunseog Ryu wrote:
If I remember correctly from M5/M10, they uses FEB (built-into-Chassis FPC version), and each FEB (row) has restriction up to 3.6Gbps rate. So total aggregated bandwidth can not go over this limit. If you install 4GE (4 of 1-port GigE PIC) in same FEB row, you can use 0.9Gbps in average per PIC with max 1Gbps. :-) Also, 4GE PIC (single PIC with 4-port GigE) has limitation for up to 1Gbps aggregated bandwidth, too. M7i/M10i has redundant RE options from M5/M10. So no differencce except M7i with built-in GigE into chassis.
If you really wants to use GigE per trunk, you may have to use PE-1GE-SFP instead of single quad-port GigE PIC.
For memory, it may be sufficient with 768MB memory for now, But if I were you, I would go with 1.5GB with new RE. It's pain in the XXX to add more memory later from production system. If you are concerned about the budget, you can use after-market memory.
Hyun
Donald Stahl wrote:
choice. Layout here is such that I'd expect to use a single quad gigabit port ethernet blade in each of a pair of M10i/M20 to achieve redundancy.
he said 'blade' to which I read '4 pics in a FPC'... maybe it's a terminology thing? Neal? The M10i doesn't have an FPC blade per se (it's built into the chassis) so in the context of the M10i I assumed "single quad gigabit port ethernet blade" meant a single card- though I could definitely be wrong. My knowledge of the Juniper line is sadly pretty limited.
-Don
I don't know much about Juniper but I'm about to learn with a new job. If I'm going to take full routes from a couple of upstreams and have a couple of peers will the M10i (768M max) be enough or is the M20 (2048M max) a better choice. Layout here is such that I'd expect to use a single quad gigabit port ethernet blade in each of a pair of M10i/M20 to achieve redundancy.
As mentioned in another email, the M10i can use the RE-850 which has 1.5 GByte on the RE. As for the GigE cards: Note that the 4 port GigE PIC for M10i/M7i (PE-4GE-TYPE1-SFP-IQ2) has 1 GigE (full duplex) backplane capacity, thus you will *not* be able to run all 4 ports line rate at the same time. I haven't checked whether the same restriction also applies to the corresponding M20 card. Steinar Haug, Nethelp consulting, sthaug@nethelp.no
participants (6)
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Chris L. Morrow -
Donald Stahl -
Hyunseog Ryu -
Joe Abley -
Neal Rauhauser -
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