Hi Can you elaborate the concept of L3 vs L2? I was thinking to have L2 versus the server in A/A (vc or mclag) or A/P (plain vlan among two switches) and a vrrp over the two switches.
Are you talking to have L3 (routed port) on each switch interface versus server ? Cheers James Il Lun 28 Set 2020, 09:42 <[email protected]> ha scritto: > > james list > > Sent: Saturday, September 26, 2020 11:57 AM > > > > Dear experts > > I have a project to connect at layer2 level 16 servers (two interfaces > > each) with a total of 32 x 10Gbs server interfaces in order to setup a > big > data > > solution. > > > > These interfaces must have in normal conditions full L2 bandwidth > available > > to transmit among themselves and redundancy of switch (if there is a > fault > > condition 160 Gbs is enough). > > > > Since this kind of huge bandwidth requirement could cause bottlenecks in > > Datacenter Lan environment I was thinking to setup a separate lan > > architecture. > > > > I was thinking to setup a virtual chassis environment with 2 x qfx5100 > with > > multiple 40 Gbs interfaces to set vc ports. > > > Couple of thoughts, > > Routing vs switching > First of all try to push for a L3 solution if the app itself doesn't > support > it look into routing on host (cRDP, etc...) -so that all you need to worry > about outside of hosts is routing (not switching). > With L3 you don't need to worry about split brain scenarios with virtual > chassis or multi-chassis lag, > > Scalability and throughput, > Note that creating a dedicated 2 x qfx5100 pod will limit the solution to > the bandwidth of a single qfx5100, which may or may not be sufficient to > grow the solution in future. > Migration to a standard folded Clos fabric will then be complicated if > needed. > Also note that qfx5100 might have throughput limitations at smaller than > 1500B packet sizes, so check with the app team on expected packet size and > compare that with the switch specs or best do your performance testing. > > Buffers, > If you start to mix and match 40s and 10s (in failure condition) you need > to > worry about buffers in the stepdown from 40 to 10. > > > adam > > > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
