[c-nsp] unicast IPv4 packets punted on Cisco 4500

[Martin T]

Hi,

I have a following topology:

"Ethernet tester" <-> [Gi6/45]WS-C4506[Gi6/48] <->
[Gi0/15]ME-3600X-24FS-M[Gi0/23] <-> HW-loop


"Ethernet tester" sends out test packets(IPv4 header on top of DIX
frame), but for some reason those packets are punted in WS-C4506:

Index 0:
12 days 7:16:15:714130 - RxVlan: 900, RxPort: Gi6/45
Priority: Medium, Tag: No Tag, Event: SA Miss, Flags: 0x40, Size: 512
Eth: Src 00:00:00:00:00:11 Dst 00:18:63:00:32:76 Type/Len 0x0800
Ip: ver:IpVersion4 len:20 tos:0 totLen:494 id:0 fragOffset:0 ttl:255 proto:254
    src: 192.168.1.1 dst: 192.168.1.2 firstFragment lastFragment
Remaining data:
 0: 0x79 0x6B 0xEB 0x5D 0x47 0xDA 0x89 0xB0 0x0  0x2
10: 0x0  0x1  0x37 0x62 0x0  0x0  0xAA 0xAA 0xAA 0xAA
20: 0xAA 0xAA 0xAA 0xAA 0xAA 0xAA 0xAA 0xAA 0xAA 0xAA


This obviously causes very high CPU utilization and dropped packets
according to "sh platform cpu packet statistics". As seen in "show
platform cpu packet buffered"  output above, it's unicast IPv4
traffic. Any ideas why such packets hit the CPU?


thanks,
Martin