TCP Reset

From: Robert Maras (Robert.Maras@tdc.se)
Date: Tue Jan 22 2008 - 15:48:19 ARST


Hello,

I have problem regarding TCP reset. I think I have the switch span configured
right as well as the IPS 4215. But the reset packet does not seem to get
through. When I issue the command below I have the 200 packets No Dest,
unicast and 200 Minimum size frames. Any body encountered the same problem?

When I choose alternate tcp reset interface it works fine.

IPS version is 6.0 and switches are 3550 with version 12.2(40)SE.

W2-Rack2#sh contr

SW2-Rack2#sh controllers eth

SW2-Rack2#sh controllers ethernet-controller f0/19

Transmit FastEthernet0/19 Receive

59249562 Bytes 38400 Bytes

140601 Unicast frames 0 Unicast frames

620988 Multicast frames 0 Multicast frames

318 Broadcast frames 0 Broadcast frames

0 Discarded frames 200 No dest, unicast

0 Too old frames 0 No dest, multicast

0 Deferred frames 0 No dest, broadcast

0 1 collision frames

0 2 collision frames 0 FCS errors

0 3 collision frames 0 Oversize frames

0 4 collision frames 0 Undersize frames

0 5 collision frames 0 Collision fragments

0 6 collision frames

0 7 collision frames 200 Minimum size frames

0 8 collision frames 0 65 to 127 byte frames

0 9 collision frames 0 128 to 255 byte frames

0 10 collision frames 0 256 to 511 byte frames

0 11 collision frames 0 512 to 1023 byte frames

0 12 collision frames 0 1024 to 1518 byte frames

0 13 collision frames

0 14 collision frames 0 Flooded frames

0 15 collision frames 0 Overrun frames

0 Excessive collisions 0 VLAN filtered frames

0 Late collisions 0 Source routed frames

0 Good (1 coll) frames 0 Valid oversize frames

0 Good(>1 coll) frames 0 Pause frames

0 Pause frames 0 Symbol error frames

0 VLAN discard frames 0 Invalid frames, too large

0 Excess defer frames 0 Valid frames, too large

0 Too large frames 0 Invalid frames, too small

719902 64 byte frames 0 Valid frames, too small

13094 127 byte frames

6761 255 byte frames

20108 511 byte frames

228 1023 byte frames

1820 1518 byte frames

Robert Maras

Konsult

TDC AB

S:t Persgatan 19

SE-601 86 Norrkvping

Tel +46 8 519 810 00 vxl

Fax +46 11 4954801

Mobile + 46 11 4954823

Email robert.maras@tdc.se

Web tdc.se



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