Hi Bernd
My question was, if the memory is enough. I know, that you wrote, that for ddos problem, this solution isn't recommended. But I only want to know, if 512 MB is enough to hold two full routing tables and some prefixes from swiss-ix. The router will only run bgp and some acl. Also, we will implement some QoS.
Kind Regards
Patrick Studer
-----Ursprüngliche Nachricht----- Von: Bernd SPIESS [mailto:bernd.spiess@ascus.at] Gesendet: Montag, 12. Oktober 2009 19:20 An: 'Patrick Studer' Betreff: RE: [swinog] Follow Up Full BGP Routing Router Requirments
look for my mails - i would not recommend this solution -
but of course it depends on your bandwith needs - for very low bandwith and no chance to hold a ddos you can go with this solution - no problem
bernd
-----Original Message----- From: swinog-bounces@lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] On Behalf Of Patrick Studer Sent: Monday, October 12, 2009 4:42 PM To: 'swinog@lists.swinog.ch' Subject: [swinog] Follow Up Full BGP Routing Router Requirments
Hi
As allready requested (see our post from 17.09.), we are looking for a solutions, which will bring us the possibility to be multi homed and get full routing table from two isp and peerings to an exchange point.
We now have an offer for an refurbished 7206VXR with NPE-400 and 512 MB Memory. Would that be enough, to hold two full routing table (if needed) and peerings? We think, there are around 300K prefixes around know, so it should be okay? Right?
We will install two of them (each one connected to one of the upstream provider). Between both, we will do IBGP. On the router, we just will have BGP, some small ACLs, perhaps some QoS. That's it.
The idea behind that solutions is, that if the NPE-400 wouldn't be enough in 1-2 years, we can just exchange the NPE-400 against a NPE-G2. Since the NPE-400 is really cheap, we don't lose too much money, when we will exchange it in 1-2 years.
Thanks for any inputs.
Kind Regards
Patrick Studer
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On 2009-10-13 13:18, Patrick Studer wrote:
Hi Bernd
My question was, if the memory is enough. I know, that you wrote, that for ddos problem, this solution isn't recommended. But I only want to know, if 512 MB is enough to hold two full routing tables and some prefixes from swiss-ix. The router will only run bgp and some acl. Also, we will implement some QoS.
The 512MB will be enough with correctly choosen IOS (12.2S or 12.4), and without soft-config for two full BGP feeds. As for "little" QoS on NPE400 I'd be very careful to focus on "little" depending on the links bandwidth.
Patrick,
To avoid calculations and approaching your question empirically memory-wise: this is from a C7200 loaded with 2xBGP feeds (IPv4 only, no VPNv4/6 or IPv6) coming from a pair of RRs:
xxx-xxx-xxx#sho ip bgp sum [ ... ] BGP using 64846521 total bytes of memory
xxx-xxx-xxx#sho ver [ ... ] cisco 7206VXR (NPE-G1) processor (revision B) with 491520K/32768K bytes of memory.
xxx-xxx-xxx#sho processes memory sorted Total: 439578720, Used: 250155420, Free: 189423300 PID TTY Allocated Freed Holding Getbufs Retbufs Process 188 0 3172456404 327505564 162849436 12096 0 BGP Router [ ... ]
Essentially the answer is yes - 512MB is enough for your specific scenario. It would leave some spare room for growth of the routing tables; not really for adding a 3rd full BGP feed. Hope this helps. Overrall, good choice the VXR with NPE-400, if fits the pocket.
Cheers, Paolo
On Tue, Oct 13, 2009 at 01:18:00PM +0200, Patrick Studer wrote:
Hi Bernd
My question was, if the memory is enough. I know, that you wrote, that for ddos problem, this solution isn't recommended. But I only want to know, if 512 MB is enough to hold two full routing tables and some prefixes from swiss-ix. The router will only run bgp and some acl. Also, we will implement some QoS.
Kind Regards
Patrick Studer
-----Urspr?ngliche Nachricht----- Von: Bernd SPIESS [mailto:bernd.spiess@ascus.at] Gesendet: Montag, 12. Oktober 2009 19:20 An: 'Patrick Studer' Betreff: RE: [swinog] Follow Up Full BGP Routing Router Requirments
look for my mails - i would not recommend this solution -
but of course it depends on your bandwith needs - for very low bandwith and no chance to hold a ddos you can go with this solution - no problem
bernd
-----Original Message----- From: swinog-bounces@lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] On Behalf Of Patrick Studer Sent: Monday, October 12, 2009 4:42 PM To: 'swinog@lists.swinog.ch' Subject: [swinog] Follow Up Full BGP Routing Router Requirments
Hi
As allready requested (see our post from 17.09.), we are looking for a solutions, which will bring us the possibility to be multi homed and get full routing table from two isp and peerings to an exchange point.
We now have an offer for an refurbished 7206VXR with NPE-400 and 512 MB Memory. Would that be enough, to hold two full routing table (if needed) and peerings? We think, there are around 300K prefixes around know, so it should be okay? Right?
We will install two of them (each one connected to one of the upstream provider). Between both, we will do IBGP. On the router, we just will have BGP, some small ACLs, perhaps some QoS. That's it.
The idea behind that solutions is, that if the NPE-400 wouldn't be enough in 1-2 years, we can just exchange the NPE-400 against a NPE-G2. Since the NPE-400 is really cheap, we don't lose too much money, when we will exchange it in 1-2 years.
Thanks for any inputs.
Kind Regards
Patrick Studer
-
Paolo Lucente -
Patrick Studer -
Łukasz Bromirski