RE: Where can we find the ethertype value for IPv6 in IOS

Chris-

Bridge between two interfaces (think irb) and debug bridging until you get it....

Have you tried that?

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Chris Proctor
Sent: Monday, April 04, 2011 7:55 PM
To: Aaron
Cc: Dave Serra; ccielab_at_groupstudy.com
Subject: Re: Where can we find the ethertype value for IPv6 in IOS

I tried solving this same problem. The issue with debug ip(v6) packet
is it only shows the information in the IP datagram. I have been unable
to locate an IOS command which would show the contents of the Ethernet
payload itself. (Short of mirror and WireShark) Anything off the DocCD
is unreliable (read useless) in the actual lab.

In all honesty, I'd love to know if anyone has ever found a way to
output the complete layer 2 payload of any of the media types.

Regards,

Chris

On 4/4/2011 6:11 PM, Aaron wrote:
> I wonder if putting an ipv6 address on an interface and pinging it and debugging ip packet details would show the ether type field on the debug output...?
>
> Aaron
>
> On Apr 4, 2011, at 4:47 PM, Dave Serra<maybeedave_at_yahoo.com> wrote:
>
>> Hey Guys,
>>
>> I came across a task in one of my practice labs to make sure only
>> IPv6 traffic
>> is traversing Vlan 40. Is there any where in IOS that will show
>> us the
>> ethertype for IPv6? I tried to find it in the extended MAC
>> access-list output
>> of my 3560 but no luck. Any help is much appreciated.
>> Thanks!
>>
>> SW03(config)#mac access-list extended TEST
>> SW03(config-ext-macl)#perm
>> SW03(config-ext-macl)#permit any any ?
>> <0-65535> An arbitrary EtherType
>> in decimal, hex, or octal
>> aarp EtherType: AppleTalk ARP
>>
>> amber EtherType: DEC-Amber
>> appletalk EtherType:
>> AppleTalk/EtherTalk
>> cos CoS value
>> dec-spanning EtherType:
>> DEC-Spanning-Tree
>> decnet-iv EtherType: DECnet Phase IV
>> diagnostic
>> EtherType: DEC-Diagnostic
>> dsm EtherType: DEC-DSM
>> etype-6000
>> EtherType: 0x6000
>> etype-8042 EtherType: 0x8042
>> lat EtherType:
>> DEC-LAT
>> lavc-sca EtherType: DEC-LAVC-SCA
>> lsap LSAP value
>>
>> mop-console EtherType: DEC-MOP Remote Console
>> mop-dump EtherType:
>> DEC-MOP Dump
>> msdos EtherType: DEC-MSDOS
>> mumps EtherType:
>> DEC-MUMPS
>> netbios EtherType: DEC-NETBIOS
>> vines-echo EtherType:
>> VINES Echo
>> vines-ip EtherType: VINES IP
>> xns-idp EtherType: XNS
>> IDP
>> <cr>
>>
>>
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-- 
Chris Proctor
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