Re: Ethertype location

Hey Tim,

Yeah I have seen that one, but I navigate a different way:

   - Products
   - Wireless
   - Access Point
   - Cisco Aironet 350 Series
   - Configuration Guides
   - Cisco IOS Software Configuration Guide for Cisco Aironet Access
   Points, Cisco IOS Release 12.3(8)JA

But as you mentioned, this is by no means a complete list. It was my
understanding the 'Everything' in the Lab is documented on CCO. Granted we
should memorize like 80% of this, but for me I shy away from committing
ethertypes and every header value to memory. Looking this stuff up is just
a given for me.

Hopefully there will be a black hole in the docscd where this stuff hides
out :) lets see what crops up, after all its christmas and theres not much
else to do than look at the docscd.....

Cheers :)

\Sam

On Tue, Dec 24, 2013 at 11:46 AM, Tim Cribbs Jr. <tmcribbs_at_gmail.com> wrote:

> Here is a location for 'some' of the ethertypes you might run into (CDP,
> ARP from your list)...
>
> Products::Routers::Branch Routers::3200 Series Rugged ISR::Config
> Guides::3200 Series Wireless MIC Software::Protocol Filters
>
> But it does not include all of the ones we might run into. If someone
> else has a more inclusive source, I'm all ears.
>
> regards,
> Tim
>
>
> On Tue, Dec 24, 2013 at 6:28 AM, Sam Bibby <sammybibs_at_gmail.com> wrote:
>
>> Hey chaps,
>>
>> Here is my scenario:
>>
>> Looking at some tasks I often get asked things like this:
>>
>> Allow only the following Layer 2 protocols across VLAN 146
>> o STP BPDUs (consider both ISL and 802.1q trunks)
>> o CDP, VTP, and UDLD
>> o ARP
>>
>> Now this requires me to know, or be able to locate the ethertype values.
>> Being that brain capacity is currently at maximum I would rather look
>> these
>> values up:
>>
>> Config wise I know this is referenced via a mac access-list:
>>
>>
>> *mac access-list extended MAC_FILTER permit any any !ETHERTYPE*
>>
>>
>> In this particular scenario the values used were:
>>
>>
>> *permit any any lsap 0x4242 0x0permit any any 0x010B 0x0permit any any
>> 0x806 0x0*
>>
>>
>> I had no idea where to begin to find these values, are we expected to
>> memorize these !! :(
>>
>> So that brings me to the information I am looking to glean from you goo
>> people:
>>
>> 1. What I am looking for is a path in the DOCS-CD where I can reference
>> these should I require them. I have found a few links but nothing
>> complete.
>> Does anyone know where such a thing is?
>>
>> 2. Why do we always set the mask to 0x0, is there a case where this would
>> be different? (I may have skimmed this part of my studies!!)
>>
>> \Sam
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Tue Dec 24 2013 - 15:16:39 ART