Frame-relay Study Notes

Frame Relay switch R2
No ip routing
Frame-relay switching enables the frame relay switch)
Interface Serial0/1
Encapsulation frame-relay encapsulate frame relay)
No ip route-cache
Serial restart-delay 0
Clock rate 64000
Frame-relay lm-type cisco
Frame-relay intf-type dce interface type)
Frame-relay route 401 interface s0/0 104 frame relay route)

Interface Serial0/0
No ip address
Encapsulation frame-relay encapsulate frame relay)
No ip route-cache
Shutdown
Serial restart-delay 0
Frame-relay lm-type cisco
Frame-relay intf-type dce interface type)
Frame-relay route 104 interface serial 0/1 401 frame relay route)
The S0/0 and S0/1 configurations are the same.

Int, ethernet 0/1
Ip add 193.1.1.2 255.255.255.0

Interface Tunnel 0 configuration Tunnel
Tunnel source 193.1.1.2
Tunnel destination 193.1.1.3

Int S0/0
Frame-relayRoute 105 interface tunnel 01000
INT S0/1
Frame-relayRoute405 interface tunnel 0 1001
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R1 communicates with R4 through the PVC pipe 104 and 401
The same network segment R2 and R1 R4 must be configured for R1 and R2.No need to configure IP R2 for Frame Relay switching R2 and R1 for MA network

Bytes --------------------------------------------------------------------------------------
R1
S0/0
Encapsulation frame-relay
Ip add 100.1.1.1 255.255.255.0
----------------------------------------------------

R4
S0/1
Encapsulation frame-relay
Ip add 100.1.1.4 255.255.255.0

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Why can I PING R1 100.1.1.4? First find the route, then find the encapsulated FR, and then find the FR MAP

PING 100.1.1.1 on R1, but the PING fails.Why does PING fail? First, check that the route has a route of 100.1.1.0 and then find the fr map.

SHOW FRAMe-relay PVc check whether the PVC has been established successfully. All available PVCs are available)
STATUS = inactive in PVCIf ACTIVEX is used, it may be a block problem.
SHOW FRAME-REAME PVC 104
SHOWFRaME-relay ROUTE
Show FRAMEMAP to view available PVC
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Frame Relay switch R3
No ip routing
Frame-relay switching enables the frame relay switch)
Interface Serial0/0
No ip address
Encapsulation frame-relay encapsulate frame relay)
No ip route-cache
Frame-relay lm-type cisco
Frame-relay intf-type dce interface type)

INT, ETHERNET 0/1
IP ADD193.1.1.3 255.255.255.0

Interface Tunnel 0Configure Tunnel
No ip address
Tunnel source 193.1.1.3
Tunnel destination 193.1.1.2

Int s0/0
Frame-relay route 501 interface tunnel 0 1000
Frame-relay route 504 interface tunnel 0 1000

--------------------------------------------------------------------------

R5
INT S0/0
Encapsulation frame-relay
IpAdd 100.1.1.5 255.255.255.0
No shut

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Example 1
R1 and R4 R5Coupled with the loop interface to simulate the Border Router
R1 1.1.1.1R4 4.4.4.4R5 5.5.5.5
Route Protocol RIPFrame Relay does not support broadcasting by default.Multicast address 224.0.0.9V1 Broadcast
DLCI has a total of 10 bitsAvailable is 1024, where 0-15 1008-1023 is retained
SHOW FRAMEMAP has a BROADCAST.

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Example 2
Run the MongoDB instance.RIP is the same as that of the source image in the source image.Multicast address 224.0.0.10
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Example 3
Run FRAME-RELAY OSPFCannot establish neighbors)Multicast address 2240.0.0.5225.0.0.6 OSPF network type NBMA (non-broadcast Multi-Channel Access)
OSPF creates a neighbor using Broadcast Multicast
Show ip OSPF int s0/0The default value is network type non_broadcast.
There are two ways to establish a neighbor
1. Modify the network type. 2. unicast
Bytes ----------------------------------------------------------------------------------------------------
The first method is to change it to broadcast.
R1
Int s0/0
Ip ospf network broadcast (change the OSPF network type to broadcast through the interface)

R4
Int s0/1
Ip ospf network broadcast

R5
Int s0/0
Ip ospf network broadcast

DR and BDR appear in the MA network.

Disable reverse ARP
R1 R4 R5 is disabled
Intface S0/0
No frame-relay inverse-arp
ARP ing takes a long time to save, so clear the clear with the commandFrame-relay inarp (clear reverse ARP cache)
R1
Interface s0/0
Frame-relay map ip address 100.1.1.4 104(The ing is based on the peer IP address., The DLCI number is set as the local end)
Frame-relay map ip address 100.1.1.5 104
R4
Interface s0/1
Frame-relay map ip address 100.1.1.1 401
Frame-relay map ip address 100.1.1.5 405

R5
Interface s0/0
Frame-relay map ip address 100.1.1.4 504
Frame-relay map ip address 100.1.1.1 504
--------------------------
Run RIP V2
Broadcast must be added after the ing in Frame Relay scenarios.
Interface s0/0
Frame-relay map ip address 100.1.1.4 504Broadcast
By default, horizontal split is enabled for sub-interfaces disabled by the main interface.
Enable horizontal segmentation
Interface s0/0
Ip split-horizon
-----------------------------------
By default, the sub-interfaces enabled when the primary interface is horizontally split are disabled when the system runs the VPC-connected VPN.
Disable horizontal segmentation
InterfaceS0/0
No ip split-horizon VPN 90
----------------------------------------------------
Run OSPF and use unicast to establish neighbors
You can
R4
Router ospf 110
Neighbor 100.1.1.1
Neighbor 100.1.1.5
An exception occurred to the DR role in the same network.
It is useless to make the HUB end a DR and avoid BDR in this network,
R1
Interface S0/0
IP ospf priority 0
R5
Interface s0/0
Ip ospf priority 0

Frame Relay charges more and more expensive based on distance
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P-mp
R4
Interface s0/1.100 P-MP must be configured with an IP address to enable the subinterface OSPF network type or NBMA, need to be changed to multicast or unicast to establish a neighbor)
IPADD ------------