From: Dustin (dusth@comcast.net)
Date: Tue Oct 12 2004 - 22:53:42 GMT-3
Thanks Brian,
As now, I remember this is in your audio class as well, but I just was
not sure should apply on physical or sub interface. Got it now.
Dustin
-----Original Message-----
From: Brian McGahan [mailto:bmcgahan@internetworkexpert.com]
Sent: Tuesday, October 12, 2004 5:46 PM
To: dusth@comcast.net; Brian McGahan; Cisco Net
Cc: jongsoo.kim@intelsat.com; ccielab@groupstudy.com
Subject: RE: Frame-relay interface-dlci and Inv ARP
Simply issue the "no frame-relay inverse-arp" command under the
multipoint subinterface. Keep in mind that this command only stops
inverse-arp requests, and does not stop inverse-arp replies.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987 x 705
Outside US: 775-826-4344 x 705
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> dusth@comcast.net
> Sent: Tuesday, October 12, 2004 4:49 PM
> To: Brian McGahan; Cisco Net
> Cc: jongsoo.kim@intelsat.com; ccielab@groupstudy.com
> Subject: RE: Frame-relay interface-dlci and Inv ARP
>
> Must we need to disable inverse-arp on sub interface instead of main
> interface?
> Dustin
>
> -------------- Original message --------------
>
> > No. Disabling Frame Relay Inverse-ARP on the main interface
> > does not automatically disable it on multipoint subinterfaces.
However,
> > as long as there is no layer 3 protocols configured on the main
> > interface (i.e. IP, IPX, IPv6), there is no reason to disable Frame
> > Relay Inverse-ARP on the main interface. This is because Frame Relay
> > Inverse-ARP requests and replies are only sent for protocols that
are
> > enabled on the interface.
> >
> >
> > HTH,
> >
> > Brian McGahan, CCIE #8593
> > bmcgahan@internetworkexpert.com
> >
> > Internetwork Expert, Inc.
> > http://www.InternetworkExpert.com
> > Toll Free: 877-224-8987 x 705
> > Outside US: 775-826-4344 x 705
> > 24/7 Support: http://forum.internetworkexpert.com
> > Live Chat: http://www.internetworkexpert.com/chat/
> >
> >
> > > -----Original Message-----
> > > From: Cisco Net [mailto:network.cisco@gmail.com]
> > > Sent: Tuesday, October 12, 2004 3:17 PM
> > > To: Brian McGahan
> > > Cc: jongsoo.kim@intelsat.com; ccielab@groupstudy.com
> > > Subject: Re: Frame-relay interface-dlci and Inv ARP
> > >
> > > Brian/Jongsoo
> > > Thank you for the explanation.
> > >
> > > Just one more clarification.
> > > If i am using multipoint sub interfaces with frame-relay
> > interface-dlci
> > > command
> > > and rely on on INV ARP. Now if i disable inv arp on the main
interface
> > > would it be disabling on the multipoint sub interface also ?
> > >
> > > So modifying ur example,
> > >
> > > interface Serial0/0
> > > encapsulation frame-relay
> > > no frame inv ------------> new addition
> > > !
> > > interface Serial0/0.1 multipoint
> > > ip address 10.0.0.1 255.0.0.0
> > > frame-relay interface-dlci 102
> > >
> > > Will it disable the inv arp on the sub interface also... Or
> > > still the multipoint sub interface will learn inv arp since has
not
> > > particularly disabled on this interface
> > > Thanks
> > > Regards
> > > Cert
> > >
> > > On Tue, 12 Oct 2004 15:56:09 -0400, Brian McGahan
> > > wrote:
> > > > 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
> > > > Toll Free: 877-224-8987 x 705
> > > > Outside US: 775-826-4344 x 705
> > > > 24/7 Support: http://forum.internetworkexpert.com
> > > > Live Chat: http://www.internetworkexpert.com/chat/
> > > >
> > > >
> > > >
> > > >
> > > > > -----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 - 17:11:47 GMT-3