Re: how does your company bring multicast traffic from external

Video streams on an interface without any communication with provider.
Basically multicast will just "appear" at the interface - static config from
the provider's side. ISP on the receiver side will then operate with it
according to the service requirements. But with video streams it comes down
to "trusted" provider.

On Tue, May 12, 2009 at 8:10 PM, Joseph L. Brunner
<joe_at_affirmedsystems.com>wrote:

> I have worked with many financial companies here in NYC. I can tell you a
> lot of it comes in from secure providers, and exchanges, such as BT RADIANZ,
> SFTI (NYSE), etc.
>
> We often don't firewall the multicast traffic, and simply hand it off to a
> limited dmz type network where the only interfaces touching it are market
> data servers, which take the feeds, extract commodity, equity, bond pricing,
> etc and then send it back out, often repackaged as a new service or directly
> to traders and others who act on the data...
>
> An example would be a small provider of market data taking in CBOE options
> pricing and repackaging that data as a new service, like QUOTRON (remember
> that?)
>
> There are several books you can pickup on market data, multicast and such
> but more from a general standpoint than something like "ip pim rp-address
> 2.2.2.2", etc.
>
> -Joe
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Gao, Qingli
> Sent: Tuesday, May 12, 2009 1:49 PM
> To: Cisco certification; Cisco certification
> Subject: OT: how does your company bring multicast traffic from external
> into internal network
>
> Hi all,
>
> Nowadays multicast traffic is used in many places, such as stock market
> data and stream media. How do your companies bring those external sourced
> traffic into your internal network?
>
> If we use firewall to pass the data, then latency will be a concern. If
> let the multicast come in directly, how will you ensure the security?
> Please let me know your idea. Thanks a lot!
>
> Thanks,
> Qingli
>
>
>
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