From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Tue Oct 12 2004 - 16:56:09 GMT-3
Yes, you can use the "frame-relay interface-dlci" command under
a multipoint subinterface to assign the circuit, and then allow
inverse-arp to resolve the layer 3 to layer 2 address. The problem in
your configuration is that you have disabled frame relay inverse-arp
with the "no frame-relay inverse-arp" command. Take the following
configuration:
R1#
interface Serial0/0
encapsulation frame-relay
!
interface Serial0/0.1 multipoint
ip address 10.0.0.1 255.0.0.0
frame-relay interface-dlci 102
R2#
interface Serial0/0
encapsulation frame-relay
!
interface Serial0/0.1 multipoint
ip address 10.0.0.2 255.0.0.0
frame-relay interface-dlci 201
Note that there are no static mappings configured, however
inverse-arp has not been disabled on the multipoint subinterfaces.
Therefore, output from the "show frame-relay map" command will show that
dynamic resolution has occurred through frame relay inverse-arp:
R1#show frame-relay map
Serial0/0.1 (up): ip 10.0.0.2 dlci 102(0x66,0x1860), dynamic,
broadcast,, status defined, active
R2#show frame-relay map
Serial0/0.1 (up): ip 10.0.0.1 dlci 201(0xC9,0x3090), dynamic,
broadcast,, status defined, active
R1#ping 10.0.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/6/8 ms
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Jongsoo.Kim@Intelsat.com
> Sent: Tuesday, October 12, 2004 2:30 PM
> To: network.cisco@gmail.com; ccielab@groupstudy.com
> Subject: RE: Frame-relay interface-dlci and Inv ARP
>
> Under multipoint sub interface, frame-rlay interface-dlci doesn't do
> mapping
> between L2 and L3.
> You must do "frame-relay map command" under multipoint sub interface.(
you
> don't need point-to-point)
> But "frame-relay interface-dlci" needs under multipoint sub interface
> if you want to enter some configuration to a specific DLCI such as
FRTS
> map
> class, VoFR, etc.
>
> "Show Frame-relay map" will tell you what's going on.
> With frame-relay inverse-arp, it will work dynamically without any
> additional config but with no frame-relay inverse-arp, you have to add
> statically by using frame-relay map command
>
> Regards
>
> Jongsoo
>
>
> -----Original Message-----
> From: Cisco Net [mailto:network.cisco@gmail.com]
> Sent: Monday, 11 October, 2004 8:28 PM
> To: Group Study
> Subject: Frame-relay interface-dlci and Inv ARP
>
>
> Hi
> One basic question,
> When i enable interface-dlci command on a main interface or
> on a multipoint sub interface, do i need to enabel INV ARP.
>
> In my case it did not work fine and i am assuming that "frame-rlay
> interface-dlci" is expecting some kind of mapping with staic or
> dynamically in case of multipoint interfaces.... I just want to see
> this is expected or not.
>
> R1:
> ip address 148.1.35.3 255.255.255.0
> encapsulation frame-relay
> clockrate 64000
> no arp frame-relay
> frame-relay interface-dlci 123
> no frame-relay inverse-arp
>
> R2:
> interface Serial1/0
> ip address 148.1.35.5 255.255.255.0
> encapsulation frame-relay
> no arp frame-relay
> frame-relay interface-dlci 321
> no frame-relay inverse-arp
>
> Ping between these IP add does not work.
> Please advice
> Thanks
> Regards
> Cert
>
>
This archive was generated by hypermail 2.1.4 : Sat Nov 06 2004 - 17:11:46 GMT-3