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Thread: Telecity

  1. #31
    Registered User Array
    Thanks connected,

    We are using 1GB NIC Ports (NetXtreme BCM5719) at the moment as we only having 1GB feeds from the two providers

    So you suggesting putting in a Dedicated network switch for the ISP to connect directly too and then run a feed from the switch to each software router? whats the advantage in doing that except not needing so many ports on the server?
    Last edited by uk26; 21st January 2016 at 11:13 PM.

  2. #32
    Registered User Array
    @Ricky
    No it wasn't, it was typed really quickly while doing something else - I just read back a sentence of it and noticed how poor it was! It *used* to be. Mailing lists or maybe twitter are usually where public discussions happen these days and they're dreadful methods for these kind of topics for several reasons. A well run forum would be better!

    Quote Originally Posted by uk26 View Post
    Thanks connected,

    We are using 1GB NIC Ports (NetXtreme BCM5719) at the moment as we only having 1GB feeds from the two providers

    So you suggesting putting in a Dedicated network switch for the ISP to connect directly too and then run a feed from the switch to each software router? whats the advantage in doing that except not needing so many ports on the server?
    So your plan is two software routers, one for each ISP port, BGP between them and then what OSPF/BGP on the server switches??

    So if a server sends out a packet destined for Amsterdam to router 2 but ISP1 has the best route, your packet might go Server > Switch > Router 2 > Router 1 > ISP1 Router if you use one ISP per router. If both routers have sessions with both ISPs then it'd be Server > Switch > Router 2 > ISP1 router.

    Honestly I'm sure you know how to set up networks and there are plenty of options when doing this.

    The switches just allow you to take on more ISPs and make it a bit more resilient I'd say but it totally depends how you setup your network and where you build the resiliency. You know your network better than me, so take no notice of me you're best to design whatever you've got to do. I was just saying really. You also need switches before your routers (or two connections from each ISP) if you used CARP for your redundancy.
    Last edited by connected; 21st January 2016 at 11:30 PM.

  3. #33
    Platinum Member
    Host Consult (Not Certified)
    Posts 6218
    Post rank 61 (-5)
    Array
    Some people find it really hard to take compliments
    Ricky Blaikie - Senior Hosting Consultant -Host Consult Ltd
    TEL: +44 (0) 20 3002 7992 WEB: http://www.host-consult.net
    * Colocation * Dedicated and Cloud Hosting * Connectivity * VDC * VOIP *

  4. #34
    Platinum Member
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    Posts 6218
    Post rank 61 (-5)
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    Best post on WHC for ages.

    Bring back WHC.

    Please.

    (not you)
    Ricky Blaikie - Senior Hosting Consultant -Host Consult Ltd
    TEL: +44 (0) 20 3002 7992 WEB: http://www.host-consult.net
    * Colocation * Dedicated and Cloud Hosting * Connectivity * VDC * VOIP *

  5. #35
    Registered User Array
    Quote Originally Posted by connected View Post

    So if a server sends out a packet destined for Amsterdam to router 2 but ISP1 has the best route, your packet might go Server > Switch > Router 2 > Router 1 > ISP1 Router if you use one ISP per router. If both routers have sessions with both ISPs then it'd be Server > Switch > Router 2 > ISP1 router.
    Would that not double the number of network hops having one isp per router and put more strain on the network?

    i was thinking of two feeds to each router so second router is just a hot backup in case the first dies

    what else am I missing on basic bgp setup to get the first router up with both isp's

  6. #36
    Registered User Array
    Quote Originally Posted by uk26 View Post
    Would that not double the number of network hops having one isp per router and put more strain on the network?

    i was thinking of two feeds to each router so second router is just a hot backup in case the first dies

    what else am I missing on basic bgp setup to get the first router up with both isp's
    Oh sorry, I assumed/interpreted you only had one feed per ISP not two from each , that's fine for a single carp pair (hot standby).

    No offence, but quite a bit - may I suggest you spend a little bit of time reading up on BGP best practices and OpenBGPD and then build a config from scratch, that way you know exactly why each line is there and what it does. Where are you filtering what your upstream sends you to filter out bogons and so on? will you be filtering what you send? Restricting to nothing longer than a v4 /24 or v6 /48? Is it a good idea to be setting max prefixes from an upstream? Do you want to be doing things like private AS removal or BCP38 now or later if you scale up ect.

  7. #37
    132 rating
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    Something to bear in mind with using an intermediate device such as a switch and therefore not terminating the layer 2 connection from your upstream provider(s) directly on your router is that your router won't have visibility of link state and therefore will be relying on BGP keepalive messages and the hold timer to tear down sessions in case of a physical loss of connectivity for any reason.
    Freethought Internet
    Freethought Internet Limited registered in London No. 5862996. Registered office: The Old Church Hall, 2A Cromwell Street, Lincoln, LN2 5LP. VAT number GB 987 0952 66.

  8. #38
    Registered User Array
    We will only be running software routers for a few months as we have spent a fair amount of decent Servers to run our core business applications.

    I know you are going to advise against it, but i might just go with 1 Software Router with a second one per-configured for emergencies (This is only a DR Site at the moment)

    We have had our AS Number approved with ripe this morning and the rack will be ready on Tuesday / Wednesday of next week.

    turns out we are only getting one feed from each provider, which is fine for the moment. one of the providers as offered at a later date to rent us a pair of decent med-range routers to replace our software solution.




    Quote Originally Posted by Ed-Freethought View Post
    Something to bear in mind with using an intermediate device such as a switch and therefore not terminating the layer 2 connection from your upstream provider(s) directly on your router is that your router won't have visibility of link state and therefore will be relying on BGP keepalive messages and the hold timer to tear down sessions in case of a physical loss of connectivity for any reason.

  9. #39
    Array
    I love the way this went from a cheapy rack in mer with TC transit (which I would be a bit suspicious of), to a lovely solution in a new, shiny DC with transit from two diverse providers who will look after you. I got the warm and fuzzies reading this.

    Very late to the party but we are in Volta, Virtus Enfield and Meridian Gate (amongst others) and with the information you gave, Volta is the site I would have recommended.

    Hardware-wise, just my 2c but we have several customers running the Ubiquiti EdgeRouter Pros. I have seen them handle up to 800 - 900Mbps throughput and they haven't fallen over yet.

  10. #40
    Registered User Array
    Telecity was not too pleased as we was to sign contracts today. asked why we changed our minds of which i said, the upcoming sale put me right off etc. His reply was, I can get you a rack in HEX for £830 a month. within a space of 15 minutes had 3 emails from them saying can we have a chat etc, we can sort something out etc. lol

    do you know what model of the Ubiquiti EdgeRouter Pros as there are a few?

    Quote Originally Posted by EXN-Stef View Post
    I love the way this went from a cheapy rack in mer with TC transit (which I would be a bit suspicious of), to a lovely solution in a new, shiny DC with transit from two diverse providers who will look after you. I got the warm and fuzzies reading this.

    Very late to the party but we are in Volta, Virtus Enfield and Meridian Gate (amongst others) and with the information you gave, Volta is the site I would have recommended.

    Hardware-wise, just my 2c but we have several customers running the Ubiquiti EdgeRouter Pros. I have seen them handle up to 800 - 900Mbps throughput and they haven't fallen over yet.
    Last edited by uk26; 22nd January 2016 at 10:10 PM.

  11. #41
    Registered User Array
    Been busy day, normal work load and trying to configure OPEN BGP during quite periods to which i have manged to get sorted apart from IPv6. soon as i add IPv6 to the BGP config, it fails

    (1) Sorted out Ripe and got the ASN Number approved and assigned to our IP Ranges for both IPV4 and IPV6.
    (2) Sorted out contracts for the two providers
    (3) arranged the cross connects to our rack at Volta
    (4) Ordered a few Dell Poweredge R430 Servers with Dual 8 core Xeon® E5-2630 CPUs with 96GB Ram and 8 Hard Disks ready to go in the rack plus a few network switches

    Software Routers
    Had a few Dell Poweredge 1950 V3 Servers with 2 x Intel(R) Xeon(R) CPU E5450 @ 3.00GHz 8 CPUs Cores: and 16GB Ram laying around so thought i would turn them into temp routers as spent this months budget on servers. but will be on the look out for a good hardware based router. does not have to be new if it means can get more for the money if getting a used router.

    Could i have some recommendations on a good used router? Make / model budget £1000-£2000

    if it can support full BGP Table for 2 providers and 3-4 peering partners each with 1 Gbps Ports. so that be at least 3 to 4 GB of Ram at min. with good spec cpus.
    Last edited by uk26; 22nd January 2016 at 10:52 PM.

  12. #42
    Array
    Do your research on Hardware routers. Just because its a dedicated box doesnt mean its actually a hardware router.

    The main difference between the 2 is in the forwarding plane, if your router is doing forwarding in software then it is susseptable to being knocked offline with high volume of small packets which is a common Ddos attack vector.

    All Juniper J series routers are software routers and will fare no better than a linux box running your choice of BGPd

    I cannot comment on Cisco as im not overly famiiar with their range, but if your going Juniper you need to go for an MX but that is likely to be quite a way above your budget.

  13. #43
    Registered User Array
    Thanks Joe-HT

    What model routers do you currently use?

    alot of our end users use BT Internet and will therefore be connecting to our service via BT, is it easy to get a direct feed to BT? or is it not worth while?

    Quote Originally Posted by Joe-HT View Post
    Do your research on Hardware routers. Just because its a dedicated box doesnt mean its actually a hardware router.

    The main difference between the 2 is in the forwarding plane, if your router is doing forwarding in software then it is susseptable to being knocked offline with high volume of small packets which is a common Ddos attack vector.

    All Juniper J series routers are software routers and will fare no better than a linux box running your choice of BGPd

    I cannot comment on Cisco as im not overly famiiar with their range, but if your going Juniper you need to go for an MX but that is likely to be quite a way above your budget.
    Last edited by uk26; 23rd January 2016 at 11:20 AM.

  14. #44
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    Quote Originally Posted by uk26 View Post
    alot of our end users use BT Internet and will therefore be connecting to our service via BT, is it easy to get a direct feed to BT? or is it not worth while?
    You can pay BT for IP transit and then filter the BGP feed so that you only use routes for their ASNs, but that will be *very* expensive. Peering with BT either publicly or privately has pretty strict requirements.
    Freethought Internet
    Freethought Internet Limited registered in London No. 5862996. Registered office: The Old Church Hall, 2A Cromwell Street, Lincoln, LN2 5LP. VAT number GB 987 0952 66.

  15. #45
    Registered User Array
    So its better to choose a provider who already has a direct feed with BT to keep costs down?

    the two providers we have, i don't think they have BT

    Quote Originally Posted by Ed-Freethought View Post
    You can pay BT for IP transit and then filter the BGP feed so that you only use routes for their ASNs, but that will be *very* expensive. Peering with BT either publicly or privately has pretty strict requirements.

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