[e-nsp] Extreme switch "show iparp" - IP Rejected

[root net]

Correction - to ping Switch C on vlan provider not transport.

On Fri, Jul 20, 2012 at 11:16 AM, root net <rootnet08 at gmail.com> wrote:

> The secondary IP is only configured because it's the /30 between the
> provider and that BGP peering router.
>
> interface Port-channel1.2
>  description transport vlan
>  encapsulation dot1Q 2
>  ip address 192.168.0.1 255.255.255.224
>
> interface Port-channel1.3
>  description provider vlan
>  encapsulation dot1Q 3
>  ip address 192.168.1.1 255.255.255.252 secondary
>  ip address 172.16.0.2 255.255.255.252
>
> One thing I forgot to mention is that VLAN transport is a L3 VLAN. This
> was really only to ping Switch C on VLAN transport.
>
>
>
> On Fri, Jul 20, 2012 at 3:12 AM, Robert Lister <robl at lentil.org> wrote:
>
>>
>> Config snippets may help to work this out.
>>
>> By 'secondary IP' how is this configured on the cisco, and why?
>>
>> Rob
>>
>> --
>> Robert Lister
>>
>>
>> Provider assigned a /30 say 172.16.0.0/30 -> his IP is say 172.16.0.1/30
>> Switch A is not assigned an IP on the /27. This switch is simple all L2
>> (tagged/untagged or trunk/access ports)
>> Switch B is assigned an IP from a /27 say 192.168.0.4/27
>> Switch C is assigned an IP from a /27 say 192.168.0.2/27
>> Main Router is assigned an IP from a /27 say 192.168.0.1/27 and the
>> secondary IP is 172.16.0.2/30
>>
>>
>> sh iparp
>> Destination     Mac                Age Static  VLAN    [VID]   Port
>> 192.168.0.1  mac-address-here    0   NO  vlan-name-here  [0002]  1
>>      Dynamic Entries:        1              Static Entries:       0
>>      Pending Entries:        0
>>          Out Request:       16                Out Response:      11
>>           In Request:     1875                 In Response:      19
>>       Proxy Answered:        0
>>             Rx Error:        0                 Dup IP Addr:       0
>>       Rejected count:      480                 Rejected IP: 172.16.0.2
>>        Rejected Port:        1                Rejected I/F: transport
>>
>>
>
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