[c-nsp] Portchannel DCEF across different VIPS in 75xx

[Joe Maimon]

Hello All,

Is there any advantage or disadvantage to spreading members of an 
ethernet portchannel across different vips?

So you would have an OC3 and a 2FE in VIP 0, a DS3 and 2FE in VIP 1 and 
so on so forth.

Since portchannel members are limited to 4 would you be better off with 
spreading 4 members of four VIPs even with 2FE, instead of only 2 VIPS?
(One nice thing about port channels is their support for hot 
reconfiguration of members)

I imagine that any answer would be very dependant on traffic pps 
patterns. So assume heavy and largely targetting Ethernet adjancencies 
in a few tier1 vlans and some tier2.

Would traffic from the OC3 to the portchannel be VIP only switched and 
not touch the CBUS?

Could you construct this in such a way as to avoid switching over the 
CBUS in favor over routing across a 3550 with a larger backplane? (10 
OC3 and 2FE should quickly overwhelm the 75xx capacity)

Thanks in advance,
Joe