Frame Relay 3 routers and 1 nm-4a/s - failed

BroadcastStorm

I am currently trying to configure a Frame Relay using a nm-4a/s as my frame-relay cloud, line protocol on 3 routers stays shut.

Screenshots from 3 routers:

R1(config-if)#do show run
Building configuration...
Current configuration : 1137 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$9W3b$qfqEmdUZYmqMk2tkpWaTP/
!
no aaa new-model
ip subnet-zero
ip cef
!
!
!
ip audit po max-events 100
!
!
!
!
!
!
!
!
!
!
!
!
username R2 password 0 ccna
!
!
!
!
!
!
!
interface Ethernet0/0
ip address 172.23.23.1 255.255.255.0
full-duplex
!
interface Serial0/0
ip address 172.23.24.1 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.2 112
frame-relay map ip 172.23.24.3 113
no frame-relay inverse-arp
!
interface BRI0/0
no ip address
encapsulation hdlc
shutdown
!
interface Ethernet0/1
no ip address
shutdown
half-duplex
!
interface Serial1/0
no ip address
!
interface Serial1/1
no ip address
!
interface Serial1/2
no ip address
shutdown
!
interface Serial1/3
no ip address
shutdown
!
ip default-gateway 172.23.23.1
ip http server
no ip http secure-server
ip classless
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password ccna
login
!
!
end

---

R2(config-if)#do show run
Building configuration...
Current configuration : 1177 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$wewb$82MtX9GU6BofPfVhnhxXu/
!
!
resource policy
!
no aaa new-model
memory-size iomem 10
no network-clock-participate slot 1
no network-clock-participate wic 0
ip subnet-zero
!
!
no ip dhcp use vrf connected
!
!
ip cef
no ip ips deny-action ips-interface
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
username R1 password 0 ccna
!
!
!
!
!
!
interface FastEthernet0/0
ip address 172.23.23.2 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
ip address 172.23.24.2 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.12.123.1 221
frame-relay map ip 172.12.123.3 221
no frame-relay inverse-arp
!
interface BRI0/0
no ip address
shutdown
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
ip default-gateway 172.23.23.2
ip classless
!
!
ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password ccna
login
!
!
end

---

R3(config-if)#do show run
Building configuration...
Current configuration : 2892 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
enable password 7 0508050A2F58
!
!
resource policy
!
no aaa new-model
no network-clock-participate slot 1
no network-clock-participate wic 0
ip subnet-zero
!
!
no ip dhcp use vrf connected
!
!
ip cef
ip domain name maxlink.com
no ip ips deny-action ips-interface
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
crypto pki trustpoint TP-self-signed-1900805352
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-1900805352
revocation-check none
rsakeypair TP-self-signed-1900805352
!
!
crypto pki certificate chain TP-self-signed-1900805352
certificate self-signed 01
30820246 308201AF A0030201 02020101 300D0609 2A864886 F70D0101 04050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 31393030 38303533 3532301E 170D3032 30333032 30333432
34335A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D31 39303038
30353335 3230819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
8100CF86 50FC332F 68AC90D7 006DEBCB D5544A22 EEA73256 E638E357 A4AADA46
EE8C9B79 97C45886 7F3766F0 E03416FB DDF109F9 ECDECCF4 E4B09D82 425BBCA9
7A71A42B AD15C4AF 2CE835EE B5E557E4 1BC9CDEE 3077B591 E8B5F93A CCAB4508
0243B1A9 0C78BD56 409A88E1 4957C06F 09D23492 2516F8F4 62511E1D 09B746C9
E6490203 010001A3 6E306C30 0F060355 1D130101 FF040530 030101FF 30190603
551D1104 12301082 0E52332E 6D61786C 696E6B2E 636F6D30 1F060355 1D230418
30168014 26C697AF 48DE5B91 2DD7C588 A583525D E2288C1C 301D0603 551D0E04
16041426 C697AF48 DE5B912D D7C588A5 83525DE2 288C1C30 0D06092A 864886F7
0D010104 05000381 81009675 8545F9B6 66B2992D 0368A00E 0DDAF7DE EA6B82D0
71F16664 D7A05FFB 6968EF1F F4CEACC9 E0E8F531 21A63F31 4CD5A929 5D96CB47
870A6DDE F80BC0B4 009617A8 1174D26E F48E2420 FFE18C00 46B5430B 8B4EC536
E721649D 295E5BA1 013E99E4 D04DE71E 32E7914A 66651A1C 674529F2 AA26B5F3
E5D26D7A 08C6A512 2F1D
quit
username ajwaltz password 7 020507550A
!
!
!
!
!
!
interface FastEthernet0/0
ip address 172.23.23.3 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
ip address 172.23.24.3 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.1 321
frame-relay map ip 172.23.24.2 321
no frame-relay inverse-arp
!
interface BRI0/0
no ip address
shutdown
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
ip default-gateway 172.23.23.1
ip classless
!
!
ip http server
ip http authentication local
ip http secure-server
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password 7 000710030A4F
login local
transport input all
!
!
end

mikej412

What's your configuration for the router with the NM-4A/S acting as the frame relay switch?

BroadcastStorm

mikej412 wrote: »

What's your configuration for the router with the NM-4A/S acting as the frame relay switch?

None if you look at the 1st show run, this is where the nm-4a/s is plugged.

On router 1

interface Serial1/0
no ip address
!
interface Serial1/1
no ip address
!
interface Serial1/2
no ip address
shutdown
!
interface Serial1/3
no ip address
shutdown

blackninja

Here's the config for my 2521 FrameSwitch to give you a head start:

Current configuration:
!
version 11.3
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname FrameSwitch
!
enable secret 5 xxxxxxxxxxxxxxxxxxxxxxxxx
!
no ip domain-lookup
frame-relay switching
!
!
!
interface Serial0
description FRAME LINK TO R4 S0
no ip address
encapsulation frame-relay
no ip mroute-cache
no fair-queue
clockrate 64000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 400 interface Serial1 104
!
interface Serial1
description FRAME LINK TO R1 TO S0/0
no ip address
encapsulation frame-relay
clockrate 64000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 102 interface Serial2 200
frame-relay route 103 interface Serial3 300
frame-relay route 104 interface Serial0 400
!
interface Serial2
description FRAME LINK TO R2 - S0/1
no ip address
encapsulation frame-relay
clockrate 64000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 200 interface Serial1 102
!
interface Serial3
description FRAME LINK TO R3 - S0/0
no ip address
encapsulation frame-relay
clockrate 64000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 300 interface Serial1 103
!
interface TokenRing0
no ip address
shutdown
!
interface BRI0
no ip address
shutdown
!
ip classless
!
!
line con 0
password xxxx
logging synchronous
login
line aux 0
line vty 0 4
privilege level 15
password xxxx
logging synchronous
login
!
end

tim100

You cannot interconnect the 3 routers and have 1 act as a frame-relay switch at the same time if you want to simulate a frame-relay cloud with all the routers on the same subnet in a full mesh or hub and spoke configuration. If you want to interconnect the 3 routers then you would need a 4th router acting as a dedicated frame-relay switch.

BroadcastStorm

Let me just try to clearly understand this, since I had it working with this configured.

On the Frame-Relay Switch a "Frame-Relay Route" has to be configured on the serial interfaces.

On the non Frame-Relay Switch "Frame-Relay Map IP" has to be configured for static DLCI mapping.

Frame Switch:

interface Serial1/0
no ip address
encapsulation frame-relay
clock rate 32000
frame-relay intf-type dce
frame-relay route 102 interface Serial1/1 201
frame-relay route 103 interface Serial1/2 301
!
interface Serial1/1
no ip address
encapsulation frame-relay
clock rate 32000
frame-relay intf-type dce
frame-relay route 201 interface Serial1/0 102
frame-relay route 203 interface Serial1/2 302
!
interface Serial1/2
no ip address
encapsulation frame-relay
clock rate 32000
frame-relay intf-type dce
frame-relay route 301 interface Serial1/0 103
frame-relay route 302 interface Serial1/1 203
!
Hub
interface Serial0/0
ip address 172.23.24.2 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.3 102 broadcast
frame-relay map ip 172.23.24.4 103 broadcast
no frame-relay inverse-arp

Spoke 1
interface Serial0/0
ip address 172.23.24.3 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.2 201 broadcast
frame-relay map ip 172.23.24.4 301 broadcast
no frame-relay inverse-arp

Spoke 2
interface Serial0/0
ip address 172.23.24.4 255.255.255.0
encapsulation frame-relay
frame-relay map ip 172.23.24.2 301 broadcast
frame-relay map ip 172.23.24.3 302 broadcast
no frame-relay inverse-arp

blackninja

Your seems config OK as long as the DLCI mapping is pointing to the right places

or you can use:

interface Serial0/0.200 point-to-point
ip address 172.23.24.3 255.255.255.0
frame-relay interface-dlci 102


This is a must better way of setting up FR ( I think anyway) as RIP works fine on it.
Using the physical interfaces you will run into split horizon problems.

kryolla

your config looke good I would like at the command reference to get more familair with what your doing.

nevolved

You might want to use the broadcast keyword on your map commands. Otherwise routing protocols cannot work.

miller811

Although I no longer have my 3640 with the same card, here are the notes I had from the config I used.

hope it helps


conf t
int s1/0
no encap
shut
int s1/1
no encap
int s1/2
no encap
int 1/3
no encap
interface Serial1/1
no ip address
no ip directed-broadcast
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clockrate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 122 interface Serial1/2 221
frame-relay route 123 interface Serial1/3 321
interface Serial1/2
no ip address
no ip directed-broadcast
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clockrate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 221 interface Serial1/1 122
interface Serial1/3
no ip address
no ip directed-broadcast
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clockrate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 321 interface Serial1/1 123


R1 Hub
conf t
int s0/0
no encap
ip address 172.12.123.1 255.255.255.0
no ip directed-broadcast
encapsulation frame-relay
no ip mroute-cache
logging event subif-link-status
logging event dlci-status-change
frame-relay map ip 172.12.123.2 122 broadcast
frame-relay map ip 172.12.123.3 123 broadcast

R2 spoke
ip address 172.12.123.2 255.255.255.0
no ip directed-broadcast
encapsulation frame-relay
no ip mroute-cache
logging event subif-link-status
logging event dlci-status-change
frame-relay map ip 172.12.123.1 221 broadcast

R3 spoke
ip address 172.12.123.3 255.255.255.0
no ip directed-broadcast
encapsulation frame-relay
no ip mroute-cache
logging event subif-link-status
logging event dlci-status-change
frame-relay map ip 172.12.123.1 321 broadcast

BroadcastStorm

BroadcastStorm wrote: »

Let me just try to clearly understand this, since I had it working with this configured.

On the Frame-Relay Switch a "Frame-Relay Route" has to be configured on the serial interfaces.

On the non Frame-Relay Switch "Frame-Relay Map IP" has to be configured for static DLCI mapping.

Frame Switch:

interface Serial1/0
no ip address
encapsulation frame-relay
clock rate 32000
frame-relay intf-type dce
frame-relay route 102 interface Serial1/1 201
frame-relay route 103 interface Serial1/2 301
!
interface Serial1/1
no ip address
encapsulation frame-relay
clock rate 32000
frame-relay intf-type dce
frame-relay route 201 interface Serial1/0 102
frame-relay route 203 interface Serial1/2 302
!
interface Serial1/2
no ip address
encapsulation frame-relay
clock rate 32000
frame-relay intf-type dce
frame-relay route 301 interface Serial1/0 103
frame-relay route 302 interface Serial1/1 203
!
Hub
interface Serial0/0
ip address 172.23.24.2 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.3 102 broadcast
frame-relay map ip 172.23.24.4 103 broadcast
no frame-relay inverse-arp

Spoke 1
interface Serial0/0
ip address 172.23.24.3 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.2 201 broadcast
frame-relay map ip 172.23.24.4 301 broadcast
no frame-relay inverse-arp

Spoke 2
interface Serial0/0
ip address 172.23.24.4 255.255.255.0
encapsulation frame-relay
frame-relay map ip 172.23.24.2 301 broadcast
frame-relay map ip 172.23.24.3 302 broadcast
no frame-relay inverse-arp

Hey guys I am following Chris Bryant's video and I was at the RIP part testing if other RIP routers is receiving network broadcast, but it doesn't look like it's working, can someone please point me to the correct direction, my Frame Relay configuration is showned above.

BroadcastStorm

kryolla wrote: »

your config looke good I would like at the command reference to get more familair with what your doing.

Where am I missing this broadcast command is it on the frame-relay switch the route won't accept a broadcast command, please advise thanks.

blackninja

BroadcastStorm wrote: »

Hey guys I am following Chris Bryant's video and I was at the RIP part testing if other RIP routers is receiving network broadcast, but it doesn't look like it's working, can someone please point me to the correct direction, my Frame Relay configuration is showned above.

Your config looks fine: are you able to ping through your FR network?

If so have you turned Split Horizon off on R1? If not the RIP updates will not be to go back out of the serial to the other spoke.

blackninja

BroadcastStorm wrote: »

Where am I missing this broadcast command is it on the frame-relay switch the route won't accept a broadcast command, please advise thanks.

You are not missing any broadcast statments ( only really need them on R1 anyway), I think kryolla just meant to check with the Command Guide as you go so you understand what you are typing.

BroadcastStorm

blackninja wrote: »

Your config looks fine: are you able to ping through your FR network?

If so have you turned Split Horizon off on R1? If not the RIP updates will not be to go back out of the serial to the other spoke.

Everything is pingable, I am still new to split-horizon, but regardless if RIP is set to Router 2 or 3 Router 1 should receive something from one of the two Router 2/3 which is not able to.

blackninja

BroadcastStorm wrote: »

Everything is pingable, I am still new to split-horizon, but regardless if RIP is set to Router 2 or 3 Router 1 should receive something from one of the two Router 2/3 which is not able to.

As long as your network statments are corect, then turn split horizon off and wait a mintue. All should be OK.

P.S. this is a bad way of using FR using RIP, normaly would use sub-interfaces to avoid split horizon issues.

BroadcastStorm

R1 - Frame-Relay Switch

R4#ping 172.23.24.255
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.23.24.255, timeout is 2 seconds:
Reply to request 0 from 172.23.24.3, 181 ms
Reply to request 0 from 172.23.24.2, 209 ms
Reply to request 1 from 172.23.24.3, 205 ms
Reply to request 1 from 172.23.24.2, 233 ms
Reply to request 2 from 172.23.24.3, 128 ms
Reply to request 2 from 172.23.24.2, 156 ms
Reply to request 3 from 172.23.24.3, 148 ms
Reply to request 3 from 172.23.24.2, 176 ms
Reply to request 4 from 172.23.24.3, 168 ms
Reply to request 4 from 172.23.24.2, 196 ms
R4#

R3#ping 172.23.24.255
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.23.24.255, timeout is 2 seconds:
Reply to request 0 from 172.23.24.4, 172 ms
Reply to request 0 from 172.23.24.2, 200 ms
Reply to request 1 from 172.23.24.4, 208 ms
Reply to request 1 from 172.23.24.2, 236 ms
Reply to request 2 from 172.23.24.4, 129 ms
Reply to request 2 from 172.23.24.2, 157 ms
Reply to request 3 from 172.23.24.4, 128 ms
Reply to request 3 from 172.23.24.2, 156 ms
Reply to request 4 from 172.23.24.4, 160 ms
Reply to request 4 from 172.23.24.2, 188 ms

BroadcastStorm

It's working now, the only change I made was disable the inverse-arp on the frame-relay switch.

R2#show ip route rip
1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
R 1.0.0.0/8 is possibly down,
routing via 172.23.24.4, Serial0/0
R 2.0.0.0/8 [120/1] via 172.23.24.3, 00:00:04, Serial0/0
[120/1] via 172.23.23.3, 00:00:25, FastEthernet0/0
R 3.0.0.0/8 [120/1] via 172.23.24.4, 00:00:16, Serial0/0
[120/1] via 172.23.23.4, 00:00:16, FastEthernet0/0

R3#
router rip
network 2.0.0.0
network 172.23.0.0
no auto-summary
R4#
router rip
network 3.0.0.0
network 172.23.0.0
no auto-summary

It's converged :P if that's the correct term.

It looks like the only time my RIP network gets broadcast is if I configure a loopback interface (I gotta still read more about loopback)

BroadcastStorm

Weird dynamic behaviour on my frame relay I turned off inverse-arp but still gets the following mapping on the Hub.

Serial0/0 (up): ip 0.0.0.0 dlci 103(0x67,0x1870)
broadcast,
CISCO, status defined, active
Serial0/0 (up): ip 0.0.0.0 dlci 102(0x66,0x1860)
broadcast,
CISCO, status defined, active
Serial0/0 (up): ip 172.23.24.2 dlci 102(0x66,0x1860), static,
broadcast,
CISCO, status defined, active
Serial0/0 (up): ip 172.23.24.3 dlci 103(0x67,0x1870), static,
broadcast,
CISCO, status defined, active

BroadcastStorm

Am I loosing my mind here I thought I have a partial mesh Frame Relay.

But why is router 3 (spoke) getting RIP loopback broadcast from router 2 (spoke), split-horizon is not disabled on router 1 (hub)

R3#show ip route rip
R 2.0.0.0/8 [120/1] via 172.23.24.2, 00:00:12, Serial0/0
[120/1] via 172.23.23.2, 00:00:20, FastEthernet0/0

how am I going to play with split-horizon, multi point/point to point subinterfaces now.

blackninja

BroadcastStorm wrote: »

Weird dynamic behaviour on my frame relay I turned off inverse-arp but still gets the following mapping on the Hub.

Serial0/0 (up): ip 0.0.0.0 dlci 103(0x67,0x1870)
broadcast,
CISCO, status defined, active
Serial0/0 (up): ip 0.0.0.0 dlci 102(0x66,0x1860)
broadcast,
CISCO, status defined, active
Serial0/0 (up): ip 172.23.24.2 dlci 102(0x66,0x1860), static,
broadcast,
CISCO, status defined, active
Serial0/0 (up): ip 172.23.24.3 dlci 103(0x67,0x1870), static,
broadcast,
CISCO, status defined, active

I have found the only way to get rid of those 0.0.0.0 from inverse arp is a re-load.

mikej412

BroadcastStorm wrote: »

I turned off inverse-arp but still gets the following mapping on the Hub.

Serial0/0 (up): ip 0.0.0.0 dlci 103(0x67,0x1870)
broadcast,
CISCO, status defined, active
Serial0/0 (up): ip 0.0.0.0 dlci 102(0x66,0x1860)
broadcast,

If you shut down the ports before you configure frame relay, you can avoid those (and the need to reload the router to get rid of those 0.0.0.0 entries).

kryolla

What does split horizon do? It prevents a routing update from being sent back out the interface in which it arrived at, so since you have a full mesh just like an ethernet segment split horizon should be enabled. So you need a hub and spoke to play with split horizon and no point to point sub-interfaces just set it up on the main interface or multipoint sub-interface. I dont think you understand the FR map statement. For ethernet you need to send a packet to an IP address that is local to your segment but it cant encapsulate it in an ethernet frame without a mac address. So the router will arp for the mac and now it can send a packet . For FR you have layer 2 address the DLCI via the LMI from FR switch but no IP address so inverse arp will resolve the DLCI to an IP address but ony for directly connected neighbor due to it being non-broadcast the hub cant forward broadcast between spokes. So now you know how to send traffic from spoke to hub but not spoke to spoke so you need a map statement which is a static statement saying to reach this OTHER IP address I have to use the same DLCI going to the hub and the hub will send it to the other spoke. Ping the hub and then the spoke and you will notice spoke to spoke will be twice as long to get the packet. Now you know that for spoke to spoke it comes into the hub and leaves out the same interface thus you need to disable split horizon manually or auto.

FR map ip 1.1.11 101 broadcast

Your FR switch config is a full mesh the route statement says I am receiving this dlci route it out this interface and this dlci so you have 2 route statement to reach 2 other routers, if you only have 3 routers then this is a full mesh, all 3 routers can talk to each other directly. Just because you have full mesh fr switch config you can modify the routers to only use certain DLCI and make them partial mesh or hub and spoke by map statements. If you were using inverse arp then it would be full mesh as you have the FR Switch setup as full mesh.

frame-relay route 201 interface Serial1/0 102
frame-relay route 203 interface Serial1/2 302

Hope this helps

yeah the 0.0.0.0 is part of the autoinstall process when the router does not have a start-up config, just save your config and reload like everyone has suggested.

EDIT: Look to see if split horizon is enabled for the main interface or sub-interface by default

BroadcastStorm

kryolla wrote: »

What does split horizon do? It prevents a routing update from being sent back out the interface in which it arrived at, so since you have a full mesh just like an ethernet segment split horizon is enabled. So you need a hub and spoke to play with split horizon and no point to point sub-interfaces just set it up on the main interface or multipoint sub-interface. I dont think you understand the FR map statement. For ethernet you need to send a packet to an IP address that is local to your segment but it cant encapsulate it in an ethernet frame without a mac address. So the router will arp for the mac and now it can send a packet . For FR you have layer 2 address the DLCI via the LMI from FR switch but no IP address so inverse arp will resolve the DLCI to an IP address but ony for directly connected neighbor due to it being non-broadcast the hub cant forward broadcast between spokes. So now you know how to send traffic from spoke to hub but not spoke to spoke so you need a map statement which is a static statement saying to reach this OTHER IP address I have to use the same DLCI going to the hub and the hub will send it to the other spoke. Ping the hub and then the spoke and you will notice spoke to spoke will be twice as long to get the packet. Now you know that for spoke to spoke it comes into the hub and leaves out the same interface thus you need to disable split horizon manually or auto.

FR map ip 1.1.11 101 broadcast

Your FR switch config is a full mesh the route statement says I am receiving this dlci route it out this interface and this dlci so you have 2 route statement to reach 2 other routers, if you only have 3 routers then this is a full mesh, all 3 routers can talk to each other directly. Just because you have full mesh fr switch config you can modify the routers to only use certain DLCI and make them partial mesh or hub and spoke by map statements. If you were using inverse arp then it would be full mesh as you have the FR Switch setup as full mesh.

frame-relay route 201 interface Serial1/0 102
frame-relay route 203 interface Serial1/2 302

Hope this helps

yeah the 0.0.0.0 is part of the autoinstall process when the router does not have a start-up config, just save your config and reload like everyone has suggested.

Thanks for taking time to explain this, I do indeed have a full-mesh frame-relay configured on the switch and the spokes, but anyway all the video I watched from Chris and Jeremy did not showed the frame-relay route configuration on the frame-relay switch itself.

I am going to move forward to my lab I cannot seem to get frame-relay route and map on the switch/hub/spoke/spoke after spending reasonable amount of time, anyway my only goal was to simulate split horizon not sending route broadcast out the same interface it learned something on a hub/spoke topology, the concept and how to enable/disable it is simple, so I will move forward, and re-visit later.

I am continuing with point-to-point and multi-point, this gives me a chance to delete the map statement and start fresh with the sub-interfaces, and yes I changed my frame-relay route/map statement but unable to get connectivity from the two spoke.

I guess to say the very least is I have a pretty good configuration of a full-mesh topology :P my question is why all the video I watched did not show the part where they configure the Frame-Relay Switch serial interface frame-relay route, they just configure the routers and bam everything works fine with hubs and spokes, do I have a different device than what they have? I have an nm-4a/s running on a 2611 router which is acting as my frame-relay switch.

Thanks

kryolla

your FR switch config looks good as a full mesh so dont change it. What issue are you having. Also are you doing your sh commands

sh frame map
sh frame pvc

Take it 1 step at a time
1)put an ip address on the interface and encap frame relay no shut
2) sh frame lmi and see if you are exchanging lmi with the fr switch
3) sh frame pvc and look for pvc status = active
4) let inverse arp do its job
5) sh frame map and look for (up) and active
6) test reach ability to directly connected neighbors
7) put map statements on spoke routers to reach other spoke routers, don't touch the hub router
8 test reach ability spoke to spoke

I modified your config so this should work for hub and spoke

Hub
interface Serial0/0
ip address 172.23.24.2 255.255.255.0
encapsulation frame-relay
no fair-queue

Spoke 1
interface Serial0/0
ip address 172.23.24.3 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.4 201
no frame-relay inverse-arp ip 301

Spoke 2
interface Serial0/0
ip address 172.23.24.4 255.255.255.0
encapsulation frame-relay
frame-relay map ip 172.23.24.3 301
no frame-relay inverse-arp ip 302

EDIT: Once you have you FR switch set up you dont have to change anything unless you are adding more circuits. I hardly touch my FR switch now most of the config changes are on the DTE Device depending on your config i.e main interface or sub-interface

BroadcastStorm

Thank you sir! I'll test this tonite

BroadcastStorm

It's working thanks so much Kryoll, ping from hub and spoke has different time response which is a good indication, you are indeed correct I was better off leaving the FR switch route statement configuration and just messing with spoke map statements configuration. I should be good now knowing my map statement with partial/full/hub & spoke.

R2#show run int serial 0/0
Building configuration...
Current configuration : 249 bytes
!
interface Serial0/0
description Connected to FRSW-Serial 1/1
ip address 172.23.24.2 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.1 201
frame-relay map ip 172.23.24.3 201
no frame-relay inverse-arp
end
R2#ping 172.23.24.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.23.24.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 112/113/117 ms
R2#ping 172.23.24.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.23.24.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 224/224/225 ms

R3#show run interface serial 0/0
Building configuration...
Current configuration : 207 bytes
!
interface Serial0/0
ip address 172.23.24.3 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay map ip 172.23.24.1 301
frame-relay map ip 172.23.24.2 301
no frame-relay inverse-arp
end
R3#ping 172.23.24.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.23.24.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 112/112/113 ms
R3#ping 172.23.24.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.23.24.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 224/225/229 ms


R2#show frame map
Serial0/0 (up): ip 172.23.24.1 dlci 201(0xC9,0x3090), static,
CISCO, status defined, active
Serial0/0 (up): ip 172.23.24.3 dlci 201(0xC9,0x3090), static,
CISCO, status defined, active

R3#show frame-relay map
Serial0/0 (up): ip 172.23.24.1 dlci 301(0x12D,0x48D0), static,
CISCO, status defined, active
Serial0/0 (up): ip 172.23.24.2 dlci 301(0x12D,0x48D0), static,
CISCO, status defined, active

It's still full mesh on the cloud FR switch

FR-SW#show frame-relay route
Input Intf Input Dlci Output Intf Output Dlci Status
Serial1/0 102 Serial1/1 201 active
Serial1/0 103 Serial1/2 301 active
Serial1/1 201 Serial1/0 102 active
Serial1/1 203 Serial1/0 103 active
Serial1/2 301 Serial1/0 103 active
Serial1/2 302 Serial1/1 203 active

kryolla

congrats but you are missing a key word on your map statements if you want this type of traffic to go through. For some reason frame relay is my favorite layer 2 protocol

BroadcastStorm

Ahhh isn't there always something I forgot to put my name on the map lol, it was screaming at me I have the dumbz :P