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| joatsaint 2002-07-29, 9:59 pm |
| Hey guys, I have run up on a question that I cannot find a clear answer for. I have read the Cisco Press book, searched the Cisco site and searched around the net. I cannot seem to find a clear answer to the following.
show IPX traffic - incrementing count in the format errors counter usually mean?
A. Host requests an unknown server type
B. A hardware problem with the network interface card
C. An encapsulation type mismatched on one or more hosts
D. A corrupted header in the packets that encountered a bad hop count
E. A request from hosts for a packet encapsulation that the router cannot support
Explanation: The format error field shows the number of bad packets discarded. Includes IPX packets
received in an encapsulation for which this interface is not configured.
Chappell Page 335
The explanation is straight out of the Cisco Press book. However, I cannot see a corrolation with any of the answer choices. Any help will be greatly appreciated. | |
| cyscoguru 2002-07-29, 10:35 pm |
| its d. here is cisco explanation off of there site
Number of bad packets discarded (for example, packets with a corrupted header). Includes IPX packets received in an encapsulation that this interface is not configured for.
http://www.cisco.com/univercd/cc/td...htm#xtocid86640
there is the link also.
hope this helps | |
| joatsaint 2002-07-30, 12:18 am |
| Thanks for the help | |
| peterd 2002-07-30, 1:45 am |
| Hi Guys,
why would it not be 'E' also (or possibly in place of 'D')?
Does a bad hop count 'corrupt' the header?
regards
Peter | |
| cyscoguru 2002-07-30, 8:00 am |
| A request from hosts for a packet encapsulation that the router cannot support
you have to really pay attention the the answer on E. i had to stare at it to understand it and read it over like 1500 times. it says a that a host is asking a packet encapsulation that the router don't support. where cisco explanation says its most like that the router has recieve a sap encapsulated packet instead of the default novell-ether. but the only keyword is see on D is corrupted header. i maybe wrong but from what i am understanding i would pick D. this is has very skechty answers | |
| joatsaint 2002-07-30, 5:53 pm |
| Sketchy is the word! I was confused because of the "bad hop count" in one of the answers. There is a bad hop count field in the show ipx traffic output, so it was throwing me off. The answer "A request from hosts for a packet encapsulation that the router cannot support." is wierd because a host does not request an encapsulation from a router. And of course there is no clear cut answer in the Cisco Press books. The problem is that I know I will be seeing this question again. | |
| cyscoguru 2002-07-30, 8:15 pm |
| i would just go whatever your gut feeling is at the time. i do that sometimes. | |
| joatsaint 2002-07-31, 12:51 am |
| I think I finally found a satisfactory answer. I just ran across this on the Cisco site. So, I have to pick "C" as the answer. The question is asking what is the usual cause for incrementing format errors.
"Pay attention to the "format error" field. It will be incremented each time the router receives a packet with the wrong encapsulation. If this counter is increasing, you are very likely to have an encapsulation mismatch."
http://www.cisco.com/warp/public/473/33.html |
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