[c-nsp] 1 gbit/sec limit on cat6k vlan interfaces?

[Darrell Root]

cisco-nsp,

I've got a pair of cat6k's with sup720-3b running s72033- 
ipservicesk9_wan-vz.122-18.SXF5
working as a L2/L3 distribution router.  Uplinks are 2x2gig L3  
etherchannels.
Downlinks to switches are 2x2gig L2 etherchannels.  We route  
downstream on
vlan interfaces.

The "show run int" and "show int" from one of our downstream vlan  
interfaces
are below.  During peak time we hit a 1-gig input rate (according to  
"show int").
I believe we would be exceeding 1-gig if we could.  We're showing  
significant
drops/flushes.  In addition the bandwidth metric is set to 1 gig  
(default).

Are we dropping packets due to a 1-gig limit on a vlan interface?  If  
yes,
what can we do to get more than 1-gig routing capability on a vlan  
interface
in native-ios?  Would changing the bandwidth parameter improve things  
or is
that just for routing protocol metrics (as I believe)?

Thanks!

Darrell Root
darrellrootjunk at nospam.mac.com

interface Vlan300
ip address 10.2.2.2 255.255.252.0 secondary
ip address 10.1.1.2 255.255.254.0
no ip redirects
no ip unreachables
no ip proxy-arp
mls rp vtp-domain censored
mls rp ip
standby 10 ip 10.2.2.1
standby 10 preempt
standby 90 ip 10.1.1.1
standby 90 preempt
end

mac0#sh int vl300
Vlan300 is up, line protocol is up
   Hardware is EtherSVI, address is 000a.421f.0000 (bia 000a.421f.0000)
   Internet address is 10.1.1.2/23
   MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
      reliability 255/255, txload 36/255, rxload 135/255
   Encapsulation ARPA, loopback not set
   Keepalive not supported
   ARP type: ARPA, ARP Timeout 04:00:00
   Last input 00:00:00, output 00:00:00, output hang never
   Last clearing of "show interface" counters never
   Input queue: 0/75/216102/187872 (size/max/drops/flushes); Total  
output drops: 0
   Queueing strategy: fifo
   Output queue: 0/40 (size/max)
   5 minute input rate 901905000 bits/sec, 119162 packets/sec
   5 minute output rate 144555000 bits/sec, 51058 packets/sec
   L2 Switched: ucast: 8667753272 pkt, 3752889966020 bytes - mcast:  
5448507 pkt, 423127315 bytes
   L3 in Switched: ucast: 7129066713 pkt, 6608608952977 bytes -  
mcast: 0 pkt, 0 bytes mcast
   L3 out Switched: ucast: 2986770591 pkt, 1065254245050 bytes mcast:  
0 pkt, 0 bytes
      7134340235 packets input, 6609029700244 bytes, 0 no buffer
     Received 5226971 broadcasts (927 IP multicasts)
      0 runts, 0 giants, 1043 throttles
      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
      2987090260 packets output, 1065321310317 bytes, 0 underruns
      0 output errors, 0 interface resets
      0 output buffer failures, 0 output buffers swapped out