Physical WAN Circuit Types

Transcription

1 Physical WAN Circuit Types POTS T3 OC3 OC12 OC48 OC192 Plain Old Telephone notes Service 24 x POTS 28 x 3 x T3 4 x OC3 4 x OC12 4 x OC48 bit rate 64 Kbps Mbps 45 Mbps 155 Mbps 622 Mbps 2.5 Gbps 9.6Gbps #POTS ,016 8,064 32, ,024 Est. Cost $400-$600/mo $6K-$16K/mo $20K-$45K/mo $$$$ $$$$$ $$$$$

2 Serial WAN CSU/DSUs used on 56K,, and T3 WAN data circuits. Lab uses special back-toback serial cables without CSU/DSUs R1 R1 SLAVE TIMING SLAVE TIMING CSU/ DSU R6 INTERNAL TIMING PSTN CIRCUIT INTERCONNECT BACK-TO-BACK SERIAL CABLE R2 R3 R1 R4 SLAVE TIMING CSU/ DSU INTERNAL TIMING R5 SLAVE TIMING R2 R2 PHYSICAL SERIAL CABLE CONNECTIONS

3 Serial WAN 2

4 TAMPA DEDICATED CIRCUIT EXAMPLE $$$ Meet Point Circuits TALLAHASSEE VERIZON SPRINT BELLSOUTH MIAMI ORLANDO

5 FRAME-RELAY EXAMPLE - PHYSICAL VERIZON SPRINT NNI BELLSOUTH NNI T3 TAMPA MIAMI ORLANDO TALLAHASSEE

6 DLCI 103 FRAME-RELAY EXAMPLE - LOGICAL TAMPA TALLAHASSEE DLCI 102 VERIZON SPRINT DLCI 101 BELLSOUTH T3 DLCI 103 DLCI 101 DLCI 102 MIAMI ORLANDO

7 Frame-Relay vs Dedicated WAN Circuits Between Cities Frame-Relay Inexpensive Pay for only what you need Can use extra bandwidth if available Dedicated Circuit Expensive Full bandwidth always available

8 Frame-Relay Acronyms LMI Link Management Interface Messages from Frame switches to CPE devices indicating which PVCs are defined and their status FECN Forward Explicit Congestion Notification (downstream congestion) BECN Backward Explicit Congestion Notification (upstream congestion) DE Discard Eligible bit flags traffic in excess of CIR CIR Committed Information Rate DLCI Date Link Circuit Identifier

9 EQUIPMENT CABINETS

10 EQUIPMENT CABINETS 2

11 Cisco 7000 Routers (R1,R2,R3,R4) Donated by CAIDA FDDI and Serial WAN ports Single 6-port Ethernet card donated by Cisco End of life Previously deployed on InternetMCI backbone. 5 slots available for interface cards 145 lbs each 17.5"W x 19.5"H x 24.25"D 7000 FDDI0/0 MIC PHYSICAL "B" FDDI0/0 MIC PHYSICAL "A" SERIAL1/0 DB60F E2/0 DB15F AUI (R1 ONLY) PCMCIA FLASH SOCKET E2/5 DB15F AUI (R1 ONLY) AUX PORT DB25M CONSOLE PORT DB25F

12 Frame-Relay 2 R3 can emulate Frame-Relay network All routers with serial WAN ports can participate, except R5 COMP SCI NET R1 R2 R6 (R3) R3 R5 R4

13 FRAME-RELAY LAB FRAME-RELAY LAB S1/0.1 R3 (7000).3 S1/ /24 S1 DCE.6 FW/R6 (2511) /24 COMP SCI NETWORK Router R3 ports S1/1, S1/2, S1/3, and S1/4 are emulating a frame-relay WAN switch. Routers use multipoint subinterfaces for frame-relay connections. Link Management Interface type is ANSI. Encapsulation is Frame-Relay IETF. Routing protocol is RIP version S1/3 DCE FRAME-RELAY SWITCH R3 FSU NETWORK INTERNET S1/1 DCE / S1/4 S1/3.1 DCE.4 R4 (7000).4 FDDI0/ S1/3.1 R1 (7000).1 S1/3.1 S1/2 DCE R5 (4500) E2/0 E2/5 FA0 E0 E1.2.5 FDDI0 FDDI Ring /24 R2 (7000) VLAN10 VLAN20 VLAN30 VLAN40 VLAN50 VLAN60 VLAN70 VLAN80 VLAN90 frame.vsd 25-Nov-2000 R.Curci

14 Frame-Relay WAN service sold by phone companies Physical data circuits connect routers to nearest frame switch PVCs are provisioned across the cloud between routers S2 S1 FRAME-RELAY PVCs S3 S4

15 Cisco Frame-Relay Switch Cmds interface Serial1 description Frame-Relay port to R1 no ip address encapsulation frame-relay IETF clockrate frame-relay lmi-type ansi frame-relay intf-type dce frame-relay route 102 interface Serial2 201 frame-relay route 103 interface Serial3 301 frame-relay route 104 interface Serial4 401

16 sh frame route r2#sh frame route Input Intf Input DLCI Output Intf Output DLCI Status Serial1/1 102 Serial1/2 201 static Serial1/1 103 Serial1/3 301 static Serial1/1 104 Serial1/4 401 static Serial1/2 201 Serial1/1 102 static Serial1/2 203 Serial1/3 302 static Serial1/2 204 Serial1/4 402 static Serial1/3 301 Serial1/2 103 static Serial1/3 302 Serial1/2 203 static Serial1/3 304 Serial1/4 403 static Serial1/4 401 Serial1/1 104 static Serial1/4 402 Serial1/2 204 static Serial1/4 403 Serial1/3 304 static

17 Tampa Frame-Relay Example TAMPA 7507 HUB S4/1/0:0.24 S4/1/0:0.25 VERIZON FRAME-RELAY CLOUD DLCI = 24 DLCI = 25 S0 SITE1 S0 SITE2

18 Sample CPE Router Int Config Dist-57-Culp#sh ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0 xxx.yyy YES NVRAM up up Serial0 xxx.yyy.35.6 YES NVRAM up up Dist-57-Culp#sh run int s0 interface Serial0 ip address xxx.yyy encapsulation frame-relay IETF service-module t1 timeslots 1-4 frame-relay interface-dlci 16 frame-relay lmi-type ansi

19 Sample CPE Router pvc stats Dist-57-Culp#show frame-relay pvc 16 PVC Statistics for interface Serial0 (Frame Relay DTE) DLCI = 16, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0 input pkts output pkts in bytes out bytes dropped pkts 0 in FECN pkts 328 in BECN pkts 3253 out FECN pkts 0 out BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts out bcast bytes minute input rate 1000 bits/sec, 1 packets/sec 5 minute output rate 1000 bits/sec, 1 packets/sec pvc create time 13w0d, last time pvc status changed 1w0d Dist-57-Culp#

20 Sample CPE LMI stats Dist-57-Culp#show frame-relay lmi LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = ANSI Invalid Unnumbered info 0 Invalid Prot Disc 0 Invalid dummy Call Ref 0 Invalid Msg Type 0 Invalid Status Message 0 Invalid Lock Shift 0 Invalid Information ID 0 Invalid Report IE Len 0 Invalid Report Request 0 Invalid Keep IE Len 0 Num Status Enq. Sent Num Status msgs Rcvd Num Update Status Rcvd 0 Num Status Timeouts 0 Dist-57-Culp#

21 Sample HUB router PVC info HCS_Tampa#show frame-relay pvc i DLCI DLCI = 16, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.16 DLCI = 17, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.17 DLCI = 20, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.20 DLCI = 23, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.23 DLCI = 24, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.24 DLCI = 25, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.25 DLCI = 26, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.26 DLCI = 27, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.27 DLCI = 28, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.28 DLCI = 29, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.29 DLCI = 30, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial4/1/0:0.30