Re: IS-IS issue over ethernet subinterface

ES-IS instead of IS-IS adjacencies form in most cases due to IS-IS hellos
not being processed - either due to MTU mismatch somewhere along the link or
invalid authentication.

I would try and simplify my scenario by eliminating the switches between the
two routers first and then work my way out to the full topology.

Regards,

W.

On Wed, Apr 8, 2009 at 7:04 PM, Dheven <dheven_at_gmail.com> wrote:

> Hi GS,
>
> After adding the isis network point-to-point get the clns adj.
>
> R1#sh clns neighbors
>
> System Id Interface SNPA State Holdtime Type
> Protocol
> 0000.0000.0002 Fa0/0.12 c20f.20fb.0000 Up 274 IS *
> ES-IS*
> R1#
>
> It is forming ES-IS instead of IS-IS
>
>
> BUT still cannot get IS-IS to form adj.
>
> R1#sh isis neighbors
>
> System Id Type Interface IP Address State Holdtime Circuit Id
> R1#
>
>
> Regards
>
> Dheven
>
>
>
> On Wed, Apr 8, 2009 at 3:33 PM, Dheven <dheven_at_gmail.com> wrote:
>
>> Reza,
>>
>> Ran wireshark but not seeing strange. Can anyone simulate this issue? BTW
>> im running Dynamips 3725 with ios
>> c3725-adventerprisek9-mz.124-15.T5.bin
>>
>> Dheven
>>
>>
>> On Wed, Apr 8, 2009 at 2:55 PM, Reza Toghraee <reza_at_toghraee.com> wrote:
>>
>>> As a debug method I suggest to turn the switch ports which are connected
>>> to
>>> the routers as a span input, and send it to a wireshark and check what's
>>> going on,
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>>> Dheven
>>> Sent: Wednesday, April 08, 2009 4:50 PM
>>> To: Dishan Gamage
>>> Cc: Ernest Wambari; ccielab_at_groupstudy.com
>>> Subject: Re: IS-IS issue over ethernet subinterface
>>>
>>> Firstly I assume hardware issue... but its not. configured OSPF over the
>>> link and adjacencies formed no issue.
>>>
>>> R1#
>>> *Mar 1 00:18:22.567: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2.2 on
>>> FastEthernet0/0.12 from LOADING to FULL, Loading Done
>>> R1#
>>>
>>> R1#sh ip ospf neighbor
>>>
>>> Neighbor ID Pri State Dead Time Address
>>> Interface
>>> 2.2.2.2 1 FULL/DR 00:00:35 10.10.10.2
>>> FastEthernet0/0.12
>>> R1#
>>>
>>>
>>>
>>>
>>> On Wed, Apr 8, 2009 at 2:45 PM, Dishan Gamage <dishanlg_at_gmail.com>
>>> wrote:
>>>
>>> > seems that its sending but not receiving any agj-packets from remote
>>> router
>>> >
>>> >
>>> >
>>> > On Wed, Apr 8, 2009 at 3:40 PM, Dheven <dheven_at_gmail.com> wrote:
>>> >
>>> >> R1#ping 10.10.10.2
>>> >>
>>> >> Type escape sequence to abort.
>>> >> Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds:
>>> >> !!!!!
>>> >> Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/4 ms
>>> >>
>>> >> R1#sh isis neighbors
>>> >>
>>> >> System Id Type Interface IP Address State Holdtime Circuit
>>> Id
>>> >> R1#
>>> >>
>>> >>
>>> >> On Wed, Apr 8, 2009 at 2:29 PM, Ernest Wambari <ewambari_at_gmail.com
>>> >wrote:
>>> >>
>>> >>> Hello Dheven,
>>> >>>
>>> >>> Please provide the following:
>>> >>>
>>> >>> 1.sh clns nei
>>> >>> 2.debug isis adj-packet
>>> >>>
>>> >>> Regards,
>>> >>>
>>> >>> W.
>>> >>>
>>> >>> On Wed, Apr 8, 2009 at 2:57 PM, Dheven <dheven_at_gmail.com> wrote:
>>> >>>
>>> >>>> Hi GS,
>>> >>>> I am having a issue setting up IS-IS over ethernet subinterfaces.
>>> >>>>
>>> >>>> here is my setup:
>>> >>>>
>>> >>>> R1 (trunk) ---(trunk) SW1 (trunk) ----(trunk) SW2 (trunk) -----
>>> (trunk)
>>> >>>> R2
>>> >>>>
>>> >>>>
>>> >>>> R1 Configs:
>>> >>>>
>>> >>>> int fa0/0.12
>>> >>>> encapsulation dot1q 12
>>> >>>> ip address 10.10.10.1 255.255.255.0
>>> >>>> ip router isis
>>> >>>>
>>> >>>> router isis
>>> >>>> net 47.0001.0000.0000.0001.00
>>> >>>>
>>> >>>>
>>> >>>> SW1 configs:
>>> >>>>
>>> >>>> fa0/1
>>> >>>> switchport trunk encap dot1q
>>> >>>> switch port trunk allowed vlan 12
>>> >>>> switch mode trunk
>>> >>>>
>>> >>>> vlan 12 is carried across the trunk link between SW1 and SW2
>>> >>>>
>>> >>>> R2 configs:
>>> >>>>
>>> >>>> Int fa0/0.12
>>> >>>> encapsulation dot1q 12
>>> >>>> ip address 10.10.10.2 255.255.255.0
>>> >>>> ip router isis
>>> >>>>
>>> >>>> router isis
>>> >>>> net 49.0001.0000.0000.0002.00
>>> >>>>
>>> >>>> SW2 configs:
>>> >>>> int fa0/2
>>> >>>> switchport trunk encap dot1q
>>> >>>> switch port trunk allowed vlan 12
>>> >>>> switch mode trunk
>>> >>>>
>>> >>>>
>>> >>>> Please help.
>>> >>>>
>>> >>>> Regards
>>> >>>>
>>> >>>> Dheven
>>> >>>>
>>> >>>>
>>> >>>> Blogs and organic groups at http://www.ccie.net
>>> >>>>
>>> >>>>
>>> _______________________________________________________________________
>>> >>>> Subscription information may be found at:
>>> >>>> http://www.groupstudy.com/list/CCIELab.html
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>
>>> >>
>>> >>
>>> >> --
>>> >> Always forgive your enemies - Nothing annoys them so much.
>>> >>
>>> >>
>>> >>
>>> >
>>>
>>>
>>> --
>>> Always forgive your enemies - Nothing annoys them so much.
>>>
>>>
>>> Blogs and organic groups at http://www.ccie.net
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> __________ Information from ESET NOD32 Antivirus, version of virus
>>> signature
>>> database 3981 (20090401) __________
>>>
>>> The message was checked by ESET NOD32 Antivirus.
>>>
>>> http://www.eset.com
>>>
>>>
>>>
>>> __________ Information from ESET NOD32 Antivirus, version of virus
>>> signature
>>> database 3981 (20090401) __________
>>>
>>> The message was checked by ESET NOD32 Antivirus.
>>>
>>> http://www.eset.com
>>>
>>>
>>>
>>
>>
>> --
>> Always forgive your enemies - Nothing annoys them so much.
>>
>>
>>
>
>
> --
> Always forgive your enemies - Nothing annoys them so much.

Blogs and organic groups at http://www.ccie.net
Received on Wed Apr 08 2009 - 19:24:03 ART