Frame relay network configuration example learning record

Frame relay network configuration example

Frame relay （frame relay） Is a public data network communication protocol . Frame relay is an effective data transmission technology , It can transmit digital information quickly and cheaply in one-to-one or one to many applications . It can be used in speech 、 data communication , Can be used for LAN （LAN） It can also be used in Wan （WAN） Communication for . Each frame relay user will get a dedicated line connected to the frame relay node . Frame relay network for end users , It handles data transmission with other users through a constantly changing and invisible channel .

---

---

1、 The goal of the experiment

Connect two routers through frame relay protocol IP Layer interworking

---

2、 Network topology

Some routers are not equipped by default Serial Interface , But you can add it manually Serial Interface hardware , First select to add Seria l Interface router , Click on the right , Select Settings , Enter the view , And then put 2SA Pull it into the upper row of holes , Then you can get Serial The interface

notes ： Adding an interface card can only be operated when the device is turned off

---

3、 Configuration steps

（1） Set up the router R1 The port of IP Address and link layer protocol

<Huawei>system-view
[Huawei]sysname R1
[R1]interface Serial1/0/0
[R1-Serial1/0/0]ip address 10.1.1.1 24	
[R1-Serial1/0/0]link-protocol fr  // Configure the port encapsulation type as frame relay protocol link protocol  
[R1-Serial1/0/0]fr interface-type dte  // The configuration port type is  DTE 
[R1-Serial1/0/0]fr dlci 100  // Configure local  DLCI  Number 
[R1-fr-dlci-Serial1/0/0-100]quit

// If the peer router supports reverse address resolution , Then configure address dynamic mapping , Otherwise, configure static address mapping , The order is as follows ：
[R1-Serial1/0/0]fr inarp  // Configure dynamic address mapping 
[R1-Serial1/0/0]fr map ip 10.1.1.2 100  // Configure static address mapping 
[R1-Serial1/0/0]quit

（2） Set up the router R2 The port of IP Address and link layer protocol

<Huawei>system-view
[Huawei]sysname R2	
[R2]interface Serial1/0/0
[R2-Serial1/0/0]ip address 10.1.1.2 24
[R2-Serial1/0/0]link-protocol fr	
[R2-Serial1/0/0]fr interface-type dce	
[R2-Serial1/0/0]fr dlci 100  // Configure local  DLCI  Number 
[R2-fr-dlci-Serial1/0/0-100]quit
	
// If the peer router supports reverse address resolution , Then configure address dynamic mapping , Otherwise, configure static address mapping , The order is as follows ：
[R2-Serial1/0/0]fr inarp  // Configure dynamic address mapping 
[R2-Serial1/0/0]fr map ip 10.1.1.1 100  // Configure static address mapping 
[R2-Serial1/0/0]quit

---

4、 test

（1） In the router R2 View frame relay mapping information on

The frame relay protocol port is mapped to the opposite end through the address DLCI, That is, both parties can communicate .

[R2]display fr map-info 
Map Statistics for interface Serial1/0/0 (DCE)
  DLCI = 100, IP 10.1.1.1, Serial1/0/0
    create time = 2022/07/21 18:25:00, status = ACTIVE
    encapsulation = ietf, vlink = 2

（2） stay R1 On can ping through R2 Port address of , It indicates that the link layer frame relay works normally

[R1]ping 10.1.1.2
  PING 10.1.1.2: 56  data bytes, press CTRL_C to break
    Reply from 10.1.1.2: bytes=56 Sequence=1 ttl=255 time=60 ms
    Reply from 10.1.1.2: bytes=56 Sequence=2 ttl=255 time=20 ms
    Reply from 10.1.1.2: bytes=56 Sequence=3 ttl=255 time=10 ms
    Reply from 10.1.1.2: bytes=56 Sequence=4 ttl=255 time=30 ms
    Reply from 10.1.1.2: bytes=56 Sequence=5 ttl=255 time=30 ms

  --- 10.1.1.2 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 10/30/60 ms

---

5、 Summary

The main characteristics of frame relay ：
User information in frames （frame） Transmit for unit , In the process of transmission, the network changes the frame structure 、 Check transmission errors , Discard the error frame directly , meanwhile , By comparing the address segment in the frame DLCI The identification of , Realize statistical reuse of user information .

Virtual circuit for frame relay network （Virtual Circuit,VC） To connect the frame relay devices at both ends of the network , Each virtual circuit is connected with a data link identifier （Data Link Connection Identifier,DCLI） Define the frame relay connection channel .

Frame relay network provides the ability of data communication between user equipment , Its equipment can be divided into data terminal equipment （Data Terminal Equipment,DTE） And data communication devices （Data Communication Equipment,DCE）,DCE Is used to DTE Access network .

Frame relay network interface is divided into user network interface （User Network Interface,UNI） Interface with the network （Network Network Interface,NNI）,UNI finger DTE and DCE Interface between ,NNI finger DCE and DCE Port between .

---

If there are mistakes in the article , Welcome to criticize and correct