[LAB3] Frame-relay Special Topics

[LAB3] FR Special

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1 Configuring a Cisco router as a Frame relay switch

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R4#sh Run

Multilink Bundle-name Authenticated

Frame-relay switching

Interface SERIAL1/1

No IP address

Encapsulation Frame-relay

No IP route-cache

Serial Restart-delay 0

Frame-relay Lmi-type Cisco

Frame-relay Intf-type DCE

Frame-relay Route 102 Interface SERIAL1/2 201

Frame-relay Route 103 Interface SERIAL1/3 301

!

Interface SERIAL1/2

No IP address

Encapsulation Frame-relay

No IP route-cache

Serial Restart-delay 0

Frame-relay Lmi-type Cisco

Frame-relay Intf-type DCE

Frame-relay Route 201 Interface SERIAL1/1 102

frame-relay Route 203 Interface SERIAL1/3 302 <isp will cancel a >

!

Interface SERIAL1/3

No IP address

Encapsulation Frame-relay

No IP route-cache

Serial Restart-delay 0

Frame-relay Lmi-type Cisco

Frame-relay Intf-type DCE

Frame-relay Route 301 Interface SERIAL1/1 103

Frame-relay Route 302 interface SERIAL1/2 203<isp will cancel this article >

!

===============================================

R4#sh Frame-relay Route

Input Intf input DLCI output Intf output Dlci Status

SERIAL1/1 102 SERIAL1/2 201 Active

SERIAL1/1 103 SERIAL1/3 301 Active

SERIAL1/2 201 SERIAL1/1 102 Active

SERIAL1/2 203 SERIAL1/3 302 Active

SERIAL1/3 301 SERIAL1/1 103 Active

SERIAL1/3 302 SERIAL1/2 203 Active

2 Frame Relay Basic configuration, Frame Relay mapping

We still keep R4 connected (by default, vendor R4 is not fully connected)

The R1/R2/R3 are configured as follows (shutdown in ARP)

====================r1=============================

Interface serial1/0

IP address 192.168.123.1 255.255.255.0

Encapsulation Frame-relay

Serial Restart-delay 0

Frame-relay map IP 192.168.123.3 103 B

Frame-relay map IP 192.168.123.2 102 B

No Frame-relay inverse-arp

Frame-relay Lmi-type Cisco

Frame-relay Inft-type DCE

====================r2============================

Interface serial1/0

IP address 192.168.123.2 255.255.255.0

Encapsulation Frame-relay

Serial Restart-delay 0

/frame-relay map IP 192.168.123.3 203 b/

Frame-relay map IP 192.168.123.1 201 B

No Frame-relay inverse-arp

Frame-relay Lmi-type Cisco

Frame-relay Inft-type DCE

===================r3=========================

Interface serial1/0

IP address 192.168.123.3 255.255.255.0

Encapsulation Frame-relay

Serial Restart-delay 0

/frame-relay Map IP 192.168.123.2 302 b/

Frame-relay map IP 192.168.123.1 301 B

No Frame-relay inverse-arp

Frame-relay Lmi-type Cisco

================================================

The previous configuration is fully interconnected configuration, but often the actual environment is Hub-spoken way, above the red labeled FR map is not

R1 can be connected with R2/R3, but R2 and R3 can not ping through

RIP on 3-Frame Relay

We were in R1 run RIP v1 results found more than the school, so we are in the FR map, the back to add a broadcast

So what are the routing tables and the next one in R2? <192.168.123.1>

R2#sh IP Route Rip

R 1.0.0.0/8 [120/1] via 192.168.123.1, 00:00:17, serial1/0

R 3.0.0.0/8 [120/1] via 192.168.123.1, 00:00:17, serial1/0

By default: R1 s1/0 horizontal split is off

R1 (config) #int s1/0

R1 (config-if) #ip split-horizon \ \ Open Horizontal Split

Use the command show IP int s1/0 to view

R2#sh IP Route r

R 1.0.0.0/8 [120/1] via 192.168.123.1, 00:00:06, serial1/0

The R2 can only obtain R1 loopback routes, which is due to the R1 receiving R3 from R3 when the horizontal split on the R1 is turned on.

is not sent from the frame relay port, resulting in R2 not receiving a route advertised on the R3

4-Frame Relay point to multi-pip interface

R1#sh Run int s0/0

Building configuration ...

Current configuration:128 bytes

!

Interface serial0/0

No IP address

Encapsulation Frame-relay

No dce-terminal-timing-enable

No Frame-relay inverse-arp

End

R1#sh Run int s0/0.2

Building configuration ...

Current configuration:176 bytes

!

Interface serial0/0.2 multipoint

IP address 192.168.123.1 255.255.255.0

Frame-relay map IP 192.168.123.2 102 Broadcast

Frame-relay map IP 192.168.123.3 103 broadcast

R1#sh IP int s0/0.2

serial0/0.2 is up, line protocol are up

Internet address is 192.168.123.1/24

Broadcast address is 255.255.255.255

Address determined by Setup command

MTU is bytes

Helper address is not set

Directed Broadcast forwarding is disabled

Multicast reserved Groups joined:224.0.0.9

Outgoing access list is not set

Inbound access list is not set

Proxy ARP is enabled

Local Proxy ARP is disabled

Security level is default

Split horizon is enabled \ \ R1 Point-to-multipoint interface horizontal segmentation is open

......

Enable RIP on R1/R2/R3, respectively

So the route table you see on the R2 is as follows:

R2#sh IP Route Rip

R 1.0.0.0/8 [120/1] via 192.168.123.1, 00:00:05, serial0/0

You can use the "No interface s0/0.2" command to remove sub-interfaces, but you need to restart the route

The sub-interface is actually deleted.

5-Frame Relay to point-to sub-interface
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R1:

Interface serial0/0

No IP address

Encapsulation Frame-relay

No dce-terminal-timing-enable

No Frame-relay inverse-arp

!

Interface serial0/0.12 Point-to-Point

IP address 192.168.12.1 255.255.255.0

Frame-relay INTERFACE-DLCI 102

!

Interface serial0/0.13 Point-to-Point

IP address 192.168.13.1 255.255.255.0

Frame-relay INTERFACE-DLCI 103

R2:

Interface serial0/0

No IP address

Encapsulation Frame-relay

No dce-terminal-timing-enable

No Frame-relay inverse-arp

!

Interface serial0/0.12 Point-to-Point

IP address 192.168.12.2 255.255.255.0

Frame-relay INTERFACE-DLCI 201

R3:

Interface serial0/0

No IP address

Encapsulation Frame-relay

No dce-terminal-timing-enable

No Frame-relay inverse-arp

!

Interface serial0/0.13 Point-to-Point

IP address 192.168.13.3 255.255.255.0

Frame-relay Interface-dlci 301

Look at the routing table for R3:

R3#sh IP route

R 192.168.12.0/24 [120/1] via 192.168.13.1, 00:00:00, serial0/0.13

R 1.0.0.0/8 [120/1] via 192.168.13.1, 00:00:00, serial0/0.13

C 192.168.13.0/24 is directly connected, serial0/0.13

R 2.0.0.0/8 [120/2] via 192.168.13.1, 00:00:00, serial0/0.13

3.0.0.0/24 is subnetted, 1 subnets

C 3.3.3.0 is directly connected, Loopback0

\ \ Note the next hop of the route

6 EIGRP over Frame-relay

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R2 routing Table

R2#sh IP route

CODES:C-connected, s-static, R-rip, M-mobile, B-BGP

D-EIGRP, Ex-eigrp External, O-OSPF, IA-OSPF Inter area

N1-OSPF NSSA External Type 1, N2-OSPF NSSA external type 2

E1-OSPF external Type 1, E2-OSPF external type 2

I-is-is, Su-is-is Summary, L1-is-is level-1, L2-is-is level-2

Ia-is-is Inter area, *-candidate default, U-per-user static route

O-ODR, P-periodic downloaded static route

Gateway of last resort are not set

C 192.168.123.0/24 is directly connected, serial0/0

1.0.0.0/24 is subnetted, 1 subnets

D 1.1.1.0 [90/2297856] via 192.168.123.1, 00:01:02, serial0/0

2.0.0.0/24 is subnetted, 1 subnets

C 2.2.2.0 is directly connected, Loopback0

R1:

R1 (config-if) #no IP Split-horizon EIGRP 90

\\ Close level Split

R2#sh IP rou Eig

1.0.0.0/24 is subnetted, 1 subnets

D 1.1.1.0 [90/2297856] via 192.168.123.1, 00:04:16, serial0/0

3.0.0.0/24 is subnetted, 1 subnets

D 3.3.3.0 [90/2809856] via 192.168.123.1, 00:00:33, serial0/0

s1[

R1 (config-if) #no IP next-hop-self EIGRP 90

\\ turn on third party next hop

R2#sh IP Route eigrp

1.0.0.0/24 is subnetted, 1 subnets

D 1.1.1.0 [90/2297856] via 192.168.123.1, 00:00:31, serial0/0

3.0.0.0/24 is subnetted, 1 subnets

D 3.3.3.0 [90/2809856] via 192.168.123.3, 00:00:32, serial0/0

that's where it comes in. to 3.3.3.3 Routing Path (192.168.123.3 ) and actual Path (192.168.123.1 ) No one to the situation, single protocol is also relatively simple, A Multi-protocol environment is more complicated if you encounter them.

This article from the "Erick" blog, declined to reprint!

[LAB3] Frame-relay Special Topics