[c-nsp] unknow packets on 7505 FastEthernet when config trunk

[Church, Chuck]

Broadcasts, multicasts if switch isn't doing CGMP, and switch-created
traffic such as BPDUs, VTP, CDP, etc.  Although that seems rate coming
in seems very high.  The interface is only expecting frames with VLAN
tag 100, so clear all other VLANs off the trunk from the Cat side.  I'm
not sure if non-VLAN-100 frames are the cause of the giants or not.
Once you verify that all the incoming traffic is really from VLAN 100,
start looking at all the devices on that VLAN for a possible cause.  It
doesn't seem normal.


Chuck Church
Lead Design Engineer
CCIE #8776, MCNE, MCSE
Netco Government Services - Design & Implementation Team
1210 N. Parker Rd.
Greenville, SC 29609
Home office: 864-335-9473
Cell: 703-819-3495
cchurch at netcogov.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4371A48D 


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of kim
Sent: Wednesday, November 10, 2004 3:24 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] unknow packets on 7505 FastEthernet when config trunk

hi
i config fastethernet on 7505 with RSP4 + VIP2-50
i connect fastethernet  to catalyst5500 isl trunk port
this is 7505 config
interface FastEthernet0/0/0
 no ip address
 full-duplex
!
interface FastEthernet0/0/0.1
encapsulation isl 100

this is  show interface output 
 GW#sh int f0/0/0
FastEthernet0/0/0 is up, line protocol is up 
  Hardware is cyBus FastEthernet Interface, address is
0060.836f.6f00 (bia 0060.836f.6f00)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, 
     reliability 255/255, txload 1/255, rxload 14/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:02, output 00:00:01, output hang
never
  Last clearing of "show interface" counters 03:59:52
  Input queue: 0/75/0/0 (size/max/drops/flushes);
Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 5817000 bits/sec, 5148
packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     63829637 packets input, 350759187 bytes, 0 no
buffer
     Received 0 broadcasts, 0 runts, 119945 giants, 0
throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0
ignored
     0 watchdog
     0 input packets with dribble condition detected
     1703 packets output, 167628 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers
swapped out

There has a lot of in put packet  i don't config
interface ip where is packets come from?
and when i show ip cache flow from interfce  it
doesn't show any packet

Regards,
Kim.. 





		
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