Hi good people,
We have a rather intersting situation. Here's an "sh ver" snippet from first
half of 7576 box:
cisco RSP4 (R5000) processor with 262144K/2072K bytes of memory.
R5000 CPU at 200Mhz, Implementation 35, Rev 2.1, 512KB L2 Cache
Last reset from power-on
G.703/E1 software, Version 1.0.
G.703/JT2 software, Version 1.0.
X.25 software, Version 3.0.0.
Chassis Interface.
1 VIP2 controller (4 Ethernet)(4 Serial).
1 VIP2 R5K controller (1 FastEthernet)(1 Fddi).
4 VIP4-80 RM7000 controllers (1 FastEthernet)(1 GigabitEthernet)(1 ATM)(4
POS).
4 Ethernet/IEEE 802.3 interface(s)
2 FastEthernet/IEEE 802.3 interface(s)
1 GigabitEthernet/IEEE 802.3 interface(s)
4 Serial network interface(s)
1 FDDI network interface(s)
1 ATM network interface(s)
4 Packet over SONET network interface(s)
Busiest interfaces on this one are two POS interfaces on VIP4-80 in Slot5 and
one FE interface in VIP4-80 in Slot0. By "busy" I mean that during peak times
load on them looks like this:
FastEther1: in - 18Mbit, out - 32Mbit
POS OC3-1: in - 53Mbit, out - 77Mbit
POS OC3-2: in - 120Mbit, out - 63Mbit
Total load (mind that POS PA to POS PA traffic does go through MEMD on RSP,
even if they are on the same VIP) comes to: 363Mbit times 2 (because all of
this is on the same cybus) = 726Mbit.
Considering cybus capacity is 1066Mbps, we get 726Mbps ~ 68% cybus
utilization.
Could somebody please verify that my assuptions are correct?
P.S. Yes, I know that not all of the traffic is between these interfaces and
there are others, with inter-cybus traffic, but just for simplicity sake take
my numbers at face value. ;)
Thanks,
-- D.K.
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