From: Magmax (magmax@bigpond.net.au)
Date: Mon Apr 17 2006 - 00:55:20 GMT-3
You can simulate this problem in your home lab. You will only see this
problem with Ethernet interfaces and not fast Ethernet interfaces. I think
native VLAN option does not work with Ethernet interfaces
Ubaid
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Magmax
Sent: Monday, 17 April 2006 1:30 PM
To: 'sheng li'; ccielab@groupstudy.com
Subject: RE: CCIE Lab Questions - Mock Lab questions
My fault (typing mistake)
> Interface ethernet0/0.6
> Encapsulation dot1q 6
> Ip address 193.7.6.6 255.255.255.0
>
> Interface ethernet0/0.263
> Encapsulation dot1q 263 native
> Ip address 204.12.8.6 255.255.255.0
-----Original Message-----
From: sheng li [mailto:slilxn@yahoo.com]
Sent: Monday, 17 April 2006 8:23 AM
To: Magmax; ccielab@groupstudy.com
Subject: RE: CCIE Lab Questions - Mock Lab questions
Looking at your initial config, something doesn't look
right. Your e0/0.6 and e0/0.263 should never have the
same IP address:
> Interface ethernet0/0.6
> Encapsulation dot1q 6
> Ip address 193.7.6.6 255.255.255.0
>
> Interface ethernet0/0.263
> Encapsulation dot1q 263 native
> Ip address 193.7.6.6 255.255.255.0
>
Your arp debug complains about "wrong cable", and you
might want to check to see if your network masks and
other stuffs are correct.
Cheers!
Frank
--- Magmax <magmax@bigpond.net.au> wrote:
> Guys,
>
> I just reproduced the problem on my home rack and
> here is the output of
> debug Arp ------------ very interesting but I am not
> impressed with myself
>
>
>
> IP ARP: sent req src 204.12.8.6 0002.b9be.2570,
> dst 204.12.8.2 0000.0000.0000
> Ethernet1/0.263
> IP ARP rep filtered src 204.12.8.2 0004.274d.02a0,
> dst 204.12.8.6
> 0002.b9be.2570 wrong cable, interface Ethernet1/0.
> IP ARP throttled out the ARP Request for 204.12.8.2.
> IP ARP: sent req src 204.12.8.6 0002.b9be.2570,
> dst 204.12.8.2 0000.0000.0000
> Ethernet1/0.263
> IP ARP rep filtered src 204.12.8.2 0004.274d.02a0,
> dst 204.12.8.6
> 0002.b9be.2570 wrong cable, interface Ethernet1/0.
> IP ARP: sent req src 204.12.8.6 0002.b9be.2570,
> dst 204.12.8.2 0000.0000.0000
> Ethernet1/0.263
> IP ARP rep filtered src 204.12.8.2 0004.274d.02a0,
> dst 204.12.8.6
> 0002.b9be.2570 wrong cable, interface Ethernet1/0.
> IP ARP: sent req src 204.12.8.6 0002.b9be.2570,
> dst 204.12.8.2 0000.0000.0000
> Ethernet1/0.263
> IP ARP rep filtered src 204.12.8.2 0004.274d.02a0,
> dst 204.12.8.6
> 0002.b9be.2570 wrong cable, interface Ethernet1/0.
> Success rate is 0 percent (0/5)
>
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> Magmax
> Sent: Sunday, 16 April 2006 9:23 AM
> To: 'Magmax'; ccielab@groupstudy.com
> Subject: RE: CCIE Lab Questions - Mock Lab questions
>
> Guys,
>
> These are from a mock lab
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> Magmax
> Sent: Sunday, 16 April 2006 9:17 AM
> To: ccielab@groupstudy.com
> Subject: CCIE Lab Questions
>
> Guys,
>
> I was doing one of the my last lab and I came across
> follow issues
>
>
> Q1. R6 -- BB1 -- R2
>
> All these routers are connected by Ethernet (R6) or
> fast Ethernet ports
>
> Interface connected to R6 was trunk port (allow only
> required vlan) and make
> vlan 263 native
>
> R6 config
>
> Interface ethernet0/0
> No shut
>
> Interface ethernet0/0.6
> Encapsulation dot1q 6
> Ip address 193.7.6.6 255.255.255.0
>
> Interface ethernet0/0.263
> Encapsulation dot1q 263 native
> Ip address 193.7.6.6 255.255.255.0
>
>
> Switch Config (SW1 port 6)
>
> Interface fastethernet0/6
> Switchport trunk encapsulation dot1q
> Switchport mode trunk
> Switch trunk allowed vlan 6,263
> Switch trunk native 263
>
>
>
> Problem
>
> From R6 unable to ping backbone router or R2
>
> I don't know what I did wrong here but I found my
> self in miserable
> situation and since I thought it was core component
> of my lab and I never
> recovered after that
> Can anyone tell me any useful commands to
> troubleshoot this issue?
> Apparently on normal Ethernet interface if you take
> out native keyword it
> will work and also from switch config it works
>
> I wasted 2 hours on this........ Imagine if it was
> real lab exam :(
>
>
>
> Q2.Where can I find NTP in Cisco documentation DVD
> (under what section)
> A.I still believe NTP is still confusing topics and
> I always forget the
> right way
>
>
>
> Q3.Another question sometime practice labs are
> unclear about when they say
> advertise R1, R2, R3 loopback in OSPF
>
> Does this mean I need to redistribute them or
> configure in ospf areas (my
> common mistake)
>
> Q4.Where are VLAN access maps in documentation DVD?
>
>
> Happy Easter everyone :)
>
>
> Regards,
>
> Ubaid
>
>
This archive was generated by hypermail 2.1.4 : Mon May 01 2006 - 11:41:57 GMT-3