RE: No prefixes from EIGRP neighbor

From: Aaron <aaron1_at_gvtc.com>
Date: Thu, 2 Feb 2012 10:28:47 -0500

Thanks for the feeback Dee

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
DN817
Sent: Thursday, February 02, 2012 9:58 AM
To: Adam Booth
Cc: Arista Wirawan; Cisco certification; aaron1_at_gvtc.com
Subject: Re: No prefixes from EIGRP neighbor

Thanks All for you help.

Apparently this seems to be caused by an IOS bug

CSCtj00039

Headline: EIGRP:some prefixes are not being passed from PE to CE router
It got resolved we did an IOS upgrade.

Cheers,
Dee

On Wed, Feb 1, 2012 at 8:42 PM, Adam Booth <adam.booth_at_gmail.com> wrote:

> Hi Arista,
>
> I think that Redistribution or route targets would be unlikely to be
> components of a L2VPN service.
>
> I would certainly suggest Aaron's questions as ones worth checking, things
> like multicast support and split horizon at the "hub" site may be closer
to
> determine where the problem lies if the SP did not build a full mesh l2
> topology.
>
> Cheers,
> Adam
>
>
> On Thu, Feb 2, 2012 at 3:29 AM, Arista Wirawan <aristaw_at_gmail.com> wrote:
>
>> It could be ISP do not redistribute the routes correctly, such as
>> incorrect
>> route target on rd or something else.
>> On Feb 1, 2012 3:00 PM, "DN817" <ndheeraj.ccie_at_googlemail.com> wrote:
>>
>> > Hi Experts,
>> >
>> > We got an new EtherVPN (Layer 2 VPN) network and run EIGRP between all
>> > routers connected to this.
>> > For example: If R1,R2,R3,R4,R5 &R6 are 6 sites, each router is
>> configured
>> > with an IP address from the subnet 192.168.251.0/24 on the
>> > WAN interface.
>> >
>> > If I do a show ip eigrp neighbor on router, I can see all other 5
>> routers
>> > as the neighbors.
>> >
>> > But if I do a show ip eigrp neighbor detail, it doesn't show prefix
for
>> > certain neighbors.
>> > For example, if R6 advertises 3 prefixes, I can see them all on R1 but
>> > none on R2.
>> >
>> > Our Service Provider mentioned they can't see any fault as we have IP
>> > connectivity between all sites.
>> >
>> > We are using ISR G2 routers (Cisco 2951 & 1921s;
>> > IOS universalk9-mz.SPA.150-1.M4).
>> > Any help with this is much appreciated.
>> >
>> > Thanks,
>> > Dee
>> >
>> >
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Received on Thu Feb 02 2012 - 10:28:47 ART

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