RE: Issue with RIPng over Frame Relay NBMA

From: Alex Steer (alex.steer@eison.co.uk)
Date: Thu Oct 11 2007 - 16:02:54 ART

I personally would configure option 3 unless I was forced then I would
config option 1

I don't think it really matters in your scenario to be honest (feel free
to jump in and shoot me) but you must have the statement to tell the
router where that link-local address is.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Toh Soon, Lim
Sent: 11 October 2007 18:00
To: Gustavo Novais
Cc: ccielab@groupstudy.com
Subject: Re: Issue with RIPng over Frame Relay NBMA

Hi Guys,

Thanks for all your inputs. If the lab doesn't prohibit from configuring
a
static link-local address and I proceed to configure routers R2 and R6
as
follows:

R2 

--
int s0/0/0
 ipv6 address 2001:1:1:26::2/64
 ipv6 address FE80::2 link-local

R6
--
int s0/0/0
 ipv6 address 2001:1:1:26::6/64
 ipv6 address FE80::6 link-local

Can you kindly verify which of the following map statements on R2 are
correct:

Solution 1
----------
frame-relay map ipv6 FE80::6 106
frame-relay map ipv6 2001:1:1:26::6 106 broadcast

Or

Solution 2
----------
int s 0/0/0
 frame-relay map ipv6 FE80::6 106 broadcast
 frame-relay map ipv6 2001:1:1:26::6 106

Or

Solution 3
----------
int s 0/0/0
 frame-relay map ipv6 FE80::6 106 broadcast
 frame-relay map ipv6 2001:1:1:26::6 106 broadcast

I'm keeping the maps for global unicast addresses to ensure other
routers
have reachability to these addresses. Am I right?

I'm currently using Solution 2 for the static maps and it works. I guess
all
3 methods should work. But which one is the correct configuration?

Appreciate further comments and guidance.

Thank you.

B.Rgds,
Lim TS

On 10/12/07, Gustavo Novais <gustavo.novais@novabase.pt> wrote:
>
> Have you tried to also map the remote link local address on the FR
Map?
>
> Gustavo Novais
>
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Toh Soon, Lim
> Sent: quinta-feira, 11 de Outubro de 2007 15:58
> To: ccielab@groupstudy.com
> Subject: Issue with RIPng over Frame Relay NBMA
>
> Hi Group,
>
> I'm facing an issue running RIPng over frame relay NBMA. Any help is
> welcome. My config as follows:
>
> R6
> --
> ipv6 unicast-routing
> !
> interface Serial0/0/0
> no ip address
> encapsulation frame-relay
> ipv6 address 2001:1:1:26::6/64
> ipv6 rip big enable
> frame-relay map ipv6 2001:1:1:26::2 601 broadcast
> no frame-relay inverse-arp
> !
> ipv6 router rip big
>
> R2
> --
> interface Loopback1
> no ip address
> ipv6 address 2000:1:2:2::2/64
> ipv6 rip big enable
> !
> interface Serial0/0/0
> no ip address
> encapsulation frame-relay
> ipv6 address 2001:1:1:26::2/64
> ipv6 rip big enable
> frame-relay map ipv6 2001:1:1:26::6 106 broadcast
> !
> ipv6 router rip big
>
> Verification:
> -------------
> R2#sh ipv int s 0/0/0
> Serial0/0/0 is up, line protocol is up
> IPv6 is enabled, link-local address is FE80::21B:54FF:FECE:2072
> Global unicast address(es):
>    2001:1:1:26::2, subnet is 2001:1:1:26::/64
>
> R6#pi FE80::21B:54FF:FECE:2072
> Output Interface: serial0/0/0
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to FE80::21B:54FF:FECE:2072, timeout is
2
> seconds:
> Packet sent with a source address of FE80::21B:54FF:FEBC:5EEE
> .....
> Success rate is 0 percent (0/5)
>
> R6#pi 2001:1:1:26::2
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 2001:1:1:26::2, timeout is 2
seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/56
ms
>
> R6#sh ipv ro ri
> R   2000:1:2:2::/64 [120/2]
>     via FE80::21B:54FF:FECE:2072, Serial0/0/0
>
> R6#pi 2000:1:2:2::2
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 2000:1:2:2::2, timeout is 2 seconds:
> .....
> Success rate is 0 percent (0/5)
>
>
> (1) I'm not able to ping to R2's link-local address from R6 but can
ping
> its
> global unicast address.
> (2) R6 learns R2's loopback1 subnet address via RIP but can't ping
R2's
> loopback1 address.
> (3) I notice the next-hop address of the RIP route is R2's link-local
> address. I guess the reason why R6 can't ping R2's loopback1 has to do
> with
> the issue of not being able to ping R2's link-local address.
> (4) I have no issue if I re-configured the frame relay to p2p
> subinterfaces.
>
> Did I miss anything in my config? Reloading both routers doesn't help.
> Please advise.
>
>
> Thank you.
>
> B.Rgds,
> Lim TS
>
>

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