Re: protocol type & ethertype

If you look at some of the older IBM SNA documentation, you'll find some
nice examples of the 200-series ACLs, a little with ethertype, but a lot
with LSAPs. :)

So let's start with what you believe you will need to know with the
ethertypes. And then move on from there. What values do you believe
will show up in the lab exam?

0x0800 and 0x0806 definitely will...
0x8100 may show up as a possibility to need to know to filter
0x86DD may show up as a possibility as well.

Protocol types sound like more an IP ACL thing, in which case the "?"
would pretty well be self-explanatory! (OSPF, IP, etc.)

If you want to know more about ethertypes, and learn about their usage
and importance, I'd suggest taking a look at some of the wireshark
(ethereal) videos that are floating around the web. Get familiar with
sniffers and the output and you'll learn a bit that way!

Then this stuff will be second-nature to you, and it'll be easy IF you
are asked about it! :)

HTH,

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

CCDE #2009::D, CCNP-Voice, JNCIE-SP #153, JNCIE-ER #102, CISSP, et al.

IPv6 Gold Certified Engineer, IPv6 Gold Certified Trainer

CCSI #21903, JNCI-SP, JNCI-ER

swm_at_emanon.com

Knowledge is power.

Power corrupts.

Study hard and be Eeeeviiiil......

On 6/4/12 7:02 AM, shekhar sharma wrote:
> Hi Experts,
>
> I have very little undersatnding for Ethertypes & protocols types.
>
> this is necessary for configuring access-list in switches and in routers
> for access-list range 200-299.
>
> i am not able to find in configuration guide also. How will we identify
> ethertype or protocol type code during LAB exam.
>
> IS there any show command avilable and nice document on the same.??
>
> Please help
>
> Regards,
> Shekhar
>
>
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Received on Mon Jun 04 2012 - 08:19:13 ART