Hi Nagendra,
1) Both the CE and PE can have the physical interface type as either DTE or
DCE since this is layer 1, though the general rule is that the SP device
(Frame Switch) should be the DCE
2) Since you have a Frame-Relay Switch and you probably have a UNI (User
Network Interface) facing both the CE and PE routers, both routers would
have a frame-relay intf-type of dte
3) Your pseudowires need to have the same VC-ID at each endpoint (the VC-ID
is of point-to-point signficance between PEs)
I have a config below that I put together which I think mimics what you were
describing. CE1 PVC 101 is crossconnected to CE2 PVC 202 between the PE
routers.
CE1----F1----PE1====PE2---F2---CE2
###Router CE1
hostname CE1
interface Serial2/1
description To F1 S2/1
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial2/1.101 point-to-point
ip address 192.168.1.1 255.255.255.252
cdp enable
frame-relay interface-dlci 101
!
###Frame Switch F1 as implemented on a router
hostname F1
frame-relay switching
interface Serial2/1
description CE1 S2/1
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 128000
frame-relay intf-type dce
frame-relay route 101 interface Serial2/2 101
!
interface Serial2/2
description PE1 S2/2
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 128000
frame-relay intf-type dce
frame-relay route 101 interface Serial2/1 101
!
###PE1 performing FR transport over MPLS
hostname PE1
mpls label protocol ldp
interface Loopback1
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
ip address 192.168.100.1 255.255.255.252
duplex auto
speed auto
mpls ip
!
interface Serial2/2
description To F1 S2/2
no ip address
encapsulation frame-relay
serial restart-delay 0
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 1.1.1.1 0.0.0.0 area 0
network 192.168.100.0 0.0.0.255 area 0
!
connect FRoMPLS Serial2/2 101 l2transport
xconnect 2.2.2.2 1 encapsulation mpls
!
!
###PE2 performing FR transport over MPLS
hostname PE2
mpls label protocol ldp
interface Loopback1
ip address 2.2.2.2 255.255.255.255
!
interface FastEthernet0/0
ip address 192.168.100.2 255.255.255.252
duplex auto
speed auto
mpls ip
!
interface Serial2/2
description To F2 S2/2
no ip address
encapsulation frame-relay
serial restart-delay 0
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 2.2.2.2 0.0.0.0 area 0
network 192.168.100.0 0.0.0.255 area 0
!
connect FRoMPLS Serial2/2 202 l2transport
xconnect 1.1.1.1 1 encapsulation mpls
!
!
###Frame Switch F2 as implemented on a router
hostname F2
frame-relay switching
interface Serial2/1
description CE2 S2/1
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 128000
frame-relay intf-type dce
frame-relay route 202 interface Serial2/2 202
!
interface Serial2/2
description PE2 S2/2
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 128000
frame-relay intf-type dce
frame-relay route 202 interface Serial2/1 202
!
###Router CE2
hostname CE2
interface Serial2/1
description To F2 S2/1
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial2/1.202 point-to-point
ip address 192.168.1.2 255.255.255.252
cdp enable
frame-relay interface-dlci 202
!
PE1#show xconnect all
Legend: XC ST=Xconnect State, S1=Segment1 State, S2=Segment2 State
UP=Up, DN=Down, AD=Admin Down, IA=Inactive, NH=No Hardware
XC ST Segment 1 S1 Segment
2 S2
------+---------------------------------+--+---------------------------------+--
UP ac Se2/2:101(FR DLCI) UP mpls 2.2.2.2:1
UP
PE2#sh xconnect all
Legend: XC ST=Xconnect State, S1=Segment1 State, S2=Segment2 State
UP=Up, DN=Down, AD=Admin Down, IA=Inactive, NH=No Hardware
XC ST Segment 1 S1 Segment
2 S2
------+---------------------------------+--+---------------------------------+--
UP ac Se2/2:202(FR DLCI) UP mpls 1.1.1.1:1
UP
F1#show frame-relay pvc 101 | inc STATUS
DLCI = 101, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE =
Serial2/1
DLCI = 101, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE =
Serial2/2
F2#sh frame-relay pvc 202 | inc STATUS
DLCI = 202, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE =
Serial2/1
DLCI = 202, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE =
Serial2/2
CE1#sh cdp ne
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
CE2 Ser 2/1.101 125 R 7206VXR Ser
2/1.202
CE1#ping 192.168.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/17/28 ms
Below is the dynamips .net file for the topology
autostart = false
ghostios = true
[localhost]
workingdir = /home/adam/cisco/work_lab1
[[7200]]
image =
/opt/ios/unzipped/c7200-adventerprisek9-mz.124-24.T.bin
npe = npe-225
ram = 160
idlepc = 0x6307ad74
disk0 = 128
[[ROUTER CE1]]
model = 7200
console = 2001
slot0 = PA-C7200-IO-2FE
slot2 = PA-4T
s2/1 = F1 s2/1
[[ROUTER PE1]]
model = 7200
console = 2002
slot0 = PA-C7200-IO-2FE
slot2 = PA-4T
f0/0 = PE2 f0/0
s2/2 = F1 s2/2
[[ROUTER PE2]]
model = 7200
console = 2003
slot0 = PA-C7200-IO-2FE
slot2 = PA-4T
s2/2 = F2 s2/2
[[ROUTER CE2]]
model = 7200
console = 2004
slot0 = PA-C7200-IO-2FE
slot2 = PA-4T
s2/1 = F2 s2/1
[[ROUTER F1]]
model = 7200
console = 2005
slot0 = PA-C7200-IO-2FE
slot2 = PA-4T
[[ROUTER F2]]
model = 7200
console = 2006
slot0 = PA-C7200-IO-2FE
slot2 = PA-4T
I hope that's of some help.
Cheers,
Adam
On Tue, Aug 10, 2010 at 4:17 PM, NN Kumar <nagendra.cisco_at_gmail.com> wrote:
> Hi,
>
> Can someone please let me know the way to configure FRoMPLS with FR switch
> between PE and CE?.
>
> When PE-CE is back to back connected thru serial intf, we can enable
> frame-relay switching on PE and make the intf as DCE. But when we have
> frame-relay switch in between PE and CE, we cannot change the intf as DCE
> on
> PE.
>
> I tried making the intf as DTE and configure "frame-relay interface-dlci <>
> switched" and then configure layer2 connect, But the VC is still down.
>
> I am sure, I am missing something here to bring the VC up. Can someone
> please point me what I am missing?. Any pointers will be of great help.
>
>
> Regards,
> Nagendra
>
>
> On Mon, Aug 9, 2010 at 8:02 PM, NN Kumar <nagendra.cisco_at_gmail.com> wrote:
>
> > Hi,
> >
> > Can someone please point me the config required @ PE side when there is
> > frame-relay switch between PE and CE as below,
> >
> >
> > CE1-----FRSW-----PE1-----P------PE2----FRSW-----CE2
> >
> >
> > Regards,
> > Nagendra
>
>
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Received on Tue Aug 10 2010 - 18:20:46 ART
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