[c-nsp] Multicast Core
Jim McBurnett
jim at tgasolutions.com
Wed Mar 17 19:39:56 EDT 2010
What about the new 3750X and 3560X models?
Jim
-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Alexander Clouter
Sent: Tuesday, March 16, 2010 5:46 PM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Multicast Core
Tony Bunce <tonyb at go-concepts.com> wrote:
>
>> Ours definiately do, otherwise I would imagine all that IPTV traffic on
>
> Are you using the 3750s for layer3 or just layer2? If just layer2
> what are you using as your as your multicast router?
>
Mixed, but generally L3. The uplink links are port-channel'd 'hybrid'
L2/L3 links:
----
interface Port-channel1
switchport trunk encapsulation dot1q
switchport trunk native vlan 979
switchport trunk allowed vlan 127-130,901,979
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
end
----
The native VLAN carries all the L3 routing and thus obviously also the
multicast traffic up to the access layer. FYI, VLAN's 127->130,901 are
the L2 and RSPAN bits, but those carry next to no multicast traffic.
> ...but the 3750 can do stacking.
>
Cross stack channel bonding is *very* nice. We use it for our servers
and our uplinks with great success; especially handy when you want to be
clever with your UPS and hook up half of your stack to the UPS feed and
the other to raw mains.
Cheers
--
Alexander Clouter
.sigmonster says: Sorry. Nice try.
_______________________________________________
cisco-nsp mailing list cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/
More information about the cisco-nsp
mailing list