Re: PPP multilink over Frame relay

Hi Tyson,

Thanks for you awnser
I know that multilink does this. But I'm talking about the differences in
configuring multilink on a virtual-temp with or without a multilink
interface. Is the only functionality to create more multilink bundles on a
router (with a mutlink group and interface) or are there some other
conceptual differences

!
interface Virtual-Template1
 ip address 9.9.12.1 255.255.255.0
 fair-queue
 ppp multilink
 ppp multilink interleave
 ppp multilink endpoint none
 ppp multilink fragment delay 9
!
=========OR=========

interface Virtual-Template1
 no ip address
 fair-queue
 ppp multilink
 ppp multilink group 1
!
interface Multilink1
 ip address 9.9.12.1 255.255.255.0
 fair-queue
 ppp multilink
 ppp multilink interleave
 ppp multilink group 1
 ppp multilink endpoint none
 ppp multilink fragment delay 9
end
!

Kind regards,

Maarten Vervoorn

2010/7/14 Tyson Scott <tscott_at_ipexpert.com>

> The only time it would be really important is if a question stated you
> needed to ping your local interface. If that is the case you need the
> multilink. Beyond that they effectively provide the same functionality.
>
> Regards,
>
> Tyson Scott - CCIE #13513 R&S, Security, and SP
> Managing Partner / Sr. Instructor - IPexpert, Inc.
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> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Maarten Vervoorn
> Sent: Wednesday, July 14, 2010 9:44 AM
> To: Cisco certification
> Subject: PPP multilink over Frame relay
>
> For PPP multilink over frame relay you can configure it two ways. With a
> multilink interface or only on the virtual-template. Whats the difference
> between them? Below are the two configurations'I'm talking about. The only
> difference I can see is that the multilink interface is different (virtual
> access and multilink 1) and the multilink haas one inactive interface
> (virtual-temp1, is always down). When shall I choose a multilink interface
> and when shall I choose to do the commands on the virtual-template?
>
> ==============With Multilink interface================
> interface Serial1/0
> encapsulation frame-relay
> frame-relay traffic-shaping
> no frame-relay inverse-arp
> !
> interface Serial1/0.1 point-to-point
> snmp trap link-status
> frame-relay interface-dlci 102 ppp Virtual-Template1
> !
> interface Virtual-Template1
> no ip address
> ppp multilink
> ppp multilink group 1
> !
> interface Multilink1
> ip unnumbered Loopback1
> fair-queue 64 256 0
> ppp multilink
> ppp multilink interleave
> ppp multilink group 1
> !
>
> I can see the virtual-temp is inactive (its always down so its correct
>
> R1#sh ppp mul
> Multilink1
> Bundle name: R2
> Remote Endpoint Discriminator: [1] R2
> Local Endpoint Discriminator: [1] R1
> Bundle up for 00:00:21, total bandwidth 28, load 1/255
> Receive buffer limit 12000 bytes, frag timeout 3428 ms
> Interleaving enabled
> 0/0 fragments/bytes in reassembly list
> 0 lost fragments, 0 reordered
> 0/0 discarded fragments/bytes, 0 lost received
> 0x2 received sequence, 0x3 sent sequence
> Member links: 1 active, 1 inactive (max not set, min not set)
> Vi1, since 00:00:21, 105 weight, 95 frag size
> Vt1 (inactive)
> No inactive multilink interfaces
>
>
> ==============Only virtual-template interface================
> !
> interface Serial1/0
> encapsulation frame-relay
> frame-relay traffic-shaping
> no frame-relay inverse-arp
> !
> interface Serial1/0.1 point-to-point
> snmp trap link-status
> frame-relay interface-dlci 201 ppp Virtual-Template1
> !
> interface Virtual-Template1
> ip unnumbered Loopback1
> fair-queue
> ppp multilink
> ppp multilink interleave
> !
>
> R2#sh ppp mul
> Virtual-Access4
> Bundle name: R1
> Remote Endpoint Discriminator: [1] R1
> Local Endpoint Discriminator: [1] R2
> Bundle up for 00:02:27, total bandwidth 28, load 1/255
> Receive buffer limit 12192 bytes, frag timeout 3483 ms
> Interleaving enabled
> 0/0 fragments/bytes in reassembly list
> 0 lost fragments, 0 reordered
> 0/0 discarded fragments/bytes, 0 lost received
> 0x3 received sequence, 0x2 sent sequence
> Member links: 1 (max not set, min not set)
> Vi1, since 00:02:27, 105 weight, 95 frag size
> No inactive multilink interfaces
> ===========================================================
>
>
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Received on Wed Jul 14 2010 - 19:01:28 ART