Re: Getting rid of frame maps

From: Fahad Khan (fahad.khan@gmail.com)
Date: Sun Aug 10 2008 - 14:58:16 ART

Next message: Roger RPF: "AW: limit BGP prefixes sent to a neighbor"
Previous message: Scott Strobeck: "Re: Getting rid of frame maps"
Maybe in reply to: John: "Getting rid of frame maps"
Next in thread: Huan Pham: "RE: Getting rid of frame maps"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

Yes, "no frame inverse-arp" disables the inverse-arp request but not the
reply. I think there is no way to block reply. Thats why by enabling
inverse-arp just at one end you get the mappings on the other end.

On 8/10/08, Scott Strobeck <scott@strobeck.net> wrote:
>
> John,
>
> "no frame-relay inverse-arp" keeps the interface from sending arp requests
> out. It doesn't, however, keep the router from creating dynamic mappings
> based on incoming arp requests. (Or at least it maps based on somthing, . .
> I assume it's incoming arp requests.)
>
> Anyway, try disabling inverse arp on only one side of a FR link and clear
> the inarp, then bounce the opposite end and watch the map reappear on the
> side with inarp disabled. . . .
>
> I got bit by this on a mock lab and it makes a very good point. IF IN YOUR
> LAB YOU ARE USING DYNAMIC MAPPINGS, DISABLE INVERSE ARP ON ALL OTHER DLCI'S.
> If you don't, you may end up with dynamic mappings elsewhere in your lab you
> didn't even expect. After setting up all your frame relay in your lab, I
> STRONGLY suggest issuing "show frame-relay map" on EVERY router running FR
> to make sure you don't have unwanted dynamic mappings. YOU WILL LOSE POINT
> FOR THIS!
>
> Scott
>
>
>
> John wrote:
>
>> Maybe someone can explain this to me. I enterd the no frame inverse
>> commands
>> and reloaded the router. When I do a show frame map it appears that I
>> have
>> gotten rid of the unwanted dynamic mappings. When I do a sh frame pvc |
>> inc
>> dlci. I see dlci's that should not be there because of the no frame inv
>> commands. Why is this???
>>
>>
>> interface Serial0/0/0
>> ip address 54.4.2.6 255.255.255.0
>> encapsulation frame-relay
>> no frame-relay inverse-arp IP 61
>> no frame-relay inverse-arp IP 63
>> no frame-relay inverse-arp IP 601
>> no frame-relay inverse-arp IP 604
>> no frame-relay inverse-arp IP 605
>> no frame-relay inverse-arp IP 621
>> no frame-relay inverse-arp IP 624
>> no frame-relay inverse-arp IP 625
>> end
>>
>> R6(config-router)#DO SH FRAME MAP
>> Serial0/0/0 (up): ip 54.4.2.254 dlci 62(0x3E,0xCE0), dynamic,
>> broadcast,, status defined, active
>> R6(config-router)#DO SH FRAME PVC | INC DLCI
>> DLCI = 61, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 62, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 63, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 64, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 65, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 66, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 601, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 602, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 603, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 604, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 605, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 607, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 608, DLCI USAGE = UNUSED, PVC STATUS = INACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 609, DLCI USAGE = UNUSED, PVC STATUS = INACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 613, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 621, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 622, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 623, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 624, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 625, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 627, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 628, DLCI USAGE = UNUSED, PVC STATUS = INACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 629, DLCI USAGE = UNUSED, PVC STATUS = INACTIVE, INTERFACE =
>> Serial0/0/0
>> DLCI = 633, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE =
>> Serial0/0/0
>> R6(config-router)#
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>>
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>

-- *FAHAD KHAN

BE Computer Systems NED,

CCNA,CCDA,CCNP,FOUNDFE,CLSE,QOS,JNCIA,JNCIS,MCP,CCIE (Written)

Systems Support Engineer, Premier Systems (Pvt) limited,

Karachi, Pakistan

92-321-2370510*.

Blogs and organic groups at http://www.ccie.net

Next message: Roger RPF: "AW: limit BGP prefixes sent to a neighbor"
Previous message: Scott Strobeck: "Re: Getting rid of frame maps"
Maybe in reply to: John: "Getting rid of frame maps"
Next in thread: Huan Pham: "RE: Getting rid of frame maps"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

This archive was generated by hypermail 2.1.4 : Mon Sep 01 2008 - 08:15:30 ART