Downloads |
Document ID: 50105
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
RPM-to-RPM Three-Segment Connection
Network Diagram
Configuring the RPM Interfaces
Adding the RPM-to-Trunk Connections
Adding the Trunk-to-Trunk Connection
Verifying the Configuration
Caveats
RPM-to-FRSM-2E3 Three-Segment Connection
Network Diagram
Configuring the FRSM-2E3 Interface
Configuring the Router Interface
Configuring the RPM Interface
Building the FRSM-2E3-to-Trunk Connection
Building the RPM-to-Trunk Connection
Building the Trunk-to-Trunk Connection
Verifying the Configuration
Caveats
NetPro Discussion Forums - Featured Conversations
Related Information
Introduction
All the configuration examples in this section illustrate designs where datagrams enter and leave a Route Processor Module (RPM), get switched on the local Processor Switching Module (PXM), and leave and enter through a feeder trunk on the PXM. The BPX 8600, attached to the MGX 8250, switches the ATM cells to either another feeder-attached MGX 8250, ATM-attached customer premises equipment (CPE), or a feeder-attached MGX 8220.
This document is part five of a six document set:
-
RPM-to-PXM Feeder Trunk Connections
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
The information in this document is based on these software and hardware versions described the MGX 8250/8230 Configuration Cookbook Introduction.
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Conventions
For more information on document conventions, refer to the Cisco Technical Tips Conventions.
RPM-to-RPM Three-Segment Connection
In this example, IP connectivity is established between Route Processor Module (RPM) blades on two different MGX 8250 nodes. A connection is configured on each RPM to the feeder trunk on its associated PXM. Then, a connection is built on the BPX to join the feeder segments.
Note: To find additional information on the commands used in this document, use the Command Lookup Tool ( registered customers only) .
Network Diagram
This document uses this network setup:
Configuring the RPM Interfaces
The RPM switch interface operates like a PA-A3 on a Cisco 7200 router and is configured accordingly. Set the traffic shaping for unspecified bit rate (UBR) at 256000 bps peak cell rate (PCR).
/** WSW-8250A-RPM **/ wsw-8250a-rpm# conf t Enter configuration commands, one per line. End with CNTL/Z. wsw-8250a-rpm(config)# int switch 1.300 point wsw-8250a-rpm(config-subif)# ip addr 10.97.30.1 255.255.255.0 wsw-8250a-rpm(config-subif)# pvc 8250b-rpm 0/3000 wsw-8250a-rpm(config-if-atm-)# ubr 256 wsw-8250a-rpm(config-if-atm-)# ^Z /** WSW-8250B-RPM **/ wsw-8250b-rpm# conf t Enter configuration commands, one per line. End with CNTL/Z. wsw-8250b-rpm(config)# int switch 1.300 point wsw-8250b-rpm(config-subif)# ip addr 10.97.30.2 255.255.255.0 wsw-8250b-rpm(config-subif)# pvc 8250a-rpm 0/3001 wsw-8250b-rpm(config-if-atm-)# ubr 256 wsw-8250b-rpm(config-if-atm-)# ^Z
Adding the RPM-to-Trunk Connections
/** WSW-8250A-RPM **/
wsw-8250a-rpm# conf t
Enter configuration commands, one per line. End with CNTL/Z.
wsw-8250a-rpm(config)# addcon vcc sw 1.300 3000 rname mgx8250a rslot 0 1 30 3100 master local
wsw-8250a-rpm(config)# ^Z
wsw-8250a-rpm# show switch conn
Synch
lVpi lVci remoteNodeName remoteSlot remoteIf rVpi rVci Status
0 3000 mgx8250a 0 1 30 3100 inSynch
wsw-8250a-rpm# show switch conn vcc 3000
----------------------------------------------------------
Local Sub-Interface : 300
Local VPI : 0
Local VCI : 3000
Remote Node Name : mgx8250a
Remote Slot : 0
Remote Interface : 1
Remote VPI : 30
Remote VCI : 3100
Routing Priority : 0
Max Cost : 255
Restricted Trunk Type : none
Percent Util : 100
Remote PCR : 604
Remote MCR : 604
Remote Percent Util : 100
Connection Master : Local
Synch Status : inSynch
!--- Since we have not built the BPX connection, our RPM-PXM connection will
!--- have A-Bit issues.
wsw-8250a-rpm# cc 7
(session redirected)
mgx8250a.1.7.PXM.a > dspcons
This End Node Name Other End Status
7.1.30.3100 mgx8250a 10.1.0.3000 FAILED ABIT ALARM
10.1.0.3000 mgx8250a 7.1.30.3100 FAILED ABIT ALARM
/** WSW-8250B-RPM **/
wsw-8250b-rpm# conf t
Enter configuration commands, one per line. End with CNTL/Z.
wsw-8250b-rpm(config)# addcon vcc sw 1.300 3001 rname mgx8250b rslot 0 1 31 3101 master local
wsw-8250b-rpm(config)# ^Z
wsw-8250b-rpm# show swit con
Synch
lVpi lVci remoteNodeName remoteSlot remoteIf rVpi rVci Status
0 3001 mgx8250b 0 1 31 3101 inSynch
wsw-8250b-rpm# show sw conn vcc 3001
----------------------------------------------------------
Local Sub-Interface : 300
Local VPI : 0
Local VCI : 3001
Remote Node Name : mgx8250b
Remote Slot : 0
Remote Interface : 1
Remote VPI : 31
Remote VCI : 3101
Routing Priority : 0
Max Cost : 255
Restricted Trunk Type : none
Percent Util : 100
Remote PCR : 604
Remote MCR : 604
Remote Percent Util : 100
Connection Master : Local
Synch Status : inSynch
wsw-8250b-rpm# cc 7
(session redirected)
mgx8250b.1.7.PXM.a > dspcons
This End Node Name Other End Status
7.1.31.3101 mgx8250b 10.1.0.3001 FAILED ABIT ALARM
10.1.0.3001 mgx8250b 7.1.31.3101 FAILED ABIT ALARM
Adding the Trunk-to-Trunk Connection
wsw-bpx3 TN StrataCom BPX 8620 9.2.10 July 29 1999 16:09 EDT
From Remote Remote Route
11.1.30.3100 NodeName Channel State Type Avoid COS O
11.1.30.3100 wsw-bpx3 9.1.31.3101 Ok ubr
Last Command: addcon 11.1.30.3100 wsw-bpx3 9.1.31.3101 ubr 604 * 5000 * *
wsw-bpx3 TN StrataCom BPX 8620 9.2.10 July 29 1999 16:09 EDT
Conn: 11.1.30.3100 wsw-bpx3 9.1.31.3101 ubr Status:OK
PCR(0+1) % Util CDVT(0+1) FBTC CLP Set
604/604 1/1 5000/5000 y 1
Path: Route information not applicable for local connections
wsw-bpx3 BXM : OK wsw-bpx3 BXM : OK
Line 11.1 : OK Line 9.1 : OK
OAM Cell RX: Clear NNI : OK
NNI : OK
This Command: dspcon 11.1.30.3100
Verifying the Configuration
Use the ping command to verfy that you have a good connection.
/** Ping from RPM to RPM **/
wsw-8250a-rpm# ping 10.97.30.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.97.30.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/11/12 ms
/** Examine Channel Stats on BPX **/
wsw-bpx3 TN StrataCom BPX 8620 9.2.10 July 29 1999 16:11 EDT
Channel Statistics for 11.1.30.3100Cleared: July 29 1999 16:11 (-) Snapshot
PCR: 604/604 cps Collection Time: 0 day(s) 00:00:13 Corrupted: NO
Traffic Cells CLP Avg CPS %util Chan Stat Addr: 30F68D4C
From Port : 2686 0 205 33 OAM Cell RX: Clear
To Network : 2686 --- 205 33
From Network: 2699 0 206 34
To Port : 2699 0 206 34
Rx Frames Rcv : 29 NonCmplnt Dscd: 0 Rx Q Depth : 0
Tx Q Depth : 0 Rx CLP0 : 2686 Rx Nw CLP0 : 2699
Igr VSVD ACR : 0 Egr VSVD ACR : 0 Tx Clp0 Port : 2699
Rx Clp0+1 Port: 2686 NCmp CLP0 Dscd: 0 NCmp CLP1 Dscd: 0
Oflw CLP0 Dscd: 0 Oflw CLP1 Dscd: 0
Last Command: dspchstats 11.1.30.3100 1
/** Show Connections on PXMs - A-Bit alarms Disappear **/
mgx8250a.1.7.PXM.a > dspcons
This End Node Name Other End Status
7.1.30.3100 mgx8250a 10.1.0.3000 OK
10.1.0.3000 mgx8250a 7.1.30.3100 OK
mgx8250b.1.7.PXM.a > dspcons
This End Node Name Other End Status
7.1.31.3101 mgx8250b 10.1.0.3001 OK
10.1.0.3001 mgx8250b 7.1.31.3101 OK
Caveats
-
The VPI on RPM switch PVC is always 0.
-
It is necessary to match the shaping and policing parameters on both the MGX and the BPX to prevent data loss.
RPM-to-FRSM-2E3 Three-Segment Connection
In this example, IP datagrams are transported through Frame Relay/ATM service interworking between a Frame Relay-attached router and an RPM. An unchannelized E3 port adapter is connected on a Cisco 7576 router to line 1 on the Frame Relay Service Module (FRSM)-2E3 in slot 3 of one MGX 8250. The FRSM uses the service interworking translation method to convert incoming Frame Relay frames to ATM cells. The ATM cells are switched out the PXM interface and switched between feeder trunks by the BPX. When the cells are received by the other PXM, they are switched to the switch interface on the RPM in that node where they are re-integrated back into IP datagrams.
Note: To find additional information on the commands used in this document, use the Command Lookup Tool ( registered customers only) .
Network Diagram
This document uses this network setup:
Configuring the FRSM-2E3 Interface
mgx8250b.1.3.VHS2E3.a > addln 1
Syntax : cnfds3ln "line_num line_len clk_src "
E3 line number -- value range from 1 to 2
line length -- 1 for LessThan225ft,
2 for GreaterThan225ft
Dsx3 Xmt Clock Src -- 1 : backplane-clk 2 : recovery-clk 3 : Local-clk
mgx8250b.1.3.VHS2E3.a > cnfds3ln 1 1 1
Syntax : addport "port_num line_num port_type "
port number -- values ranging from 1-2( 2T3/2E3/HS2), 1-256 (2CT3)
port line number -- value ranging from 1 to 2
port type -- values 1-3, 1=frame relay, 2=FUNI mode-1a, 3=frForward
mgx8250b.1.3.VHS2E3.a > addport 1 1 1
Syntax : cnfport "portNum lmiSig asyn ELMI T391 T392 N391 N392 N393"
port number -- values ranging from 1-2( 2T3/2E3/HS2), 1-256 (2CT3)
LMI signaling -- (N)one (S)trataLMI au-AnnexAUNI
du-AnnexDUNI an-AnnexANNI dn-AnnexDNNI
asyn update -- (UPD = Update Status, UFS = Unsolicited Full Status)
(n or 1) = both dis, (y or 2) = UPD en, 3 = UFS en, 4 = both en
Enhanced LMI -- (N or n) disable (Y or y) enable
T391 timer -- value ranging from 5 to 30 sec.
T392 timer -- value ranging from 5 to 30 sec.
N391 counter -- value ranging from 1 to 255
N392 counter -- value ranging from 1 to 10
N393 counter -- value ranging from 1 to 10, greater than N392
mgx8250b.1.3.VHS2E3.a > cnfport 1 S n n
mgx8250b.1.3.VHS2E3.a > dspds3ln 1
LineNum: 1
LineEnable: Modify
LineType: G.751
LineCoding: e3HDB3
LineLength: LT225ft
LineSubRateEnable: Disable
LineDsuSelect: dl3100Mode
LineRate: 34368kbps
LineLoopbackCommand: NoLoop
LineXmitClockSource: backplaneClk
LineEqualizer: internal equalizer
LineBertEnable: Disable
Syntax : cnflnsubrate " line_num dsu_subrate_ena dsu_select dsu_line_rate "
E3 line number -- value range from 1 to 2
ds3 SubRate Enable -- 1 = disable, 2 = enable
ds3 Dsu Select -- 1 = dl3100Mode, 2 = adcKentroxMode
dsu Line Rate -- values ranging from 300 to 44736 in steps of 300kbps (dl3100Mode) or 500 Kbps (adcKentroxMode)
mgx8250b.1.3.VHS2E3.a > cnflnsubrate 1 2 1 33900
dsx3LineRate = 33900
Configuring the Router Interface
wss-7576ah# conf t <--- Enter configuration commands, one per line. End with CNTL/Z. wss-7576ah(config)# int s 8/0/0 wss-7576ah(config-if)# encap frame ietf wss-7576ah(config-if)# no shut wss-7576ah(config-if)# clock source line wss-7576ah(config-if)# dsu band 33900 wss-7576ah(config-if)# int s 8/0/0.950 p wss-7576ah(config-subif)# ip addr 10.97.95.2 255.255.255.0 wss-7576ah(config-subif)# frame-relay interface-dlci 950 wss-7576ah(config-fr-dlci)# ^Z
Configuring the RPM Interface
wsw-8250a-rpm# conf t <--- Enter configuration commands, one per line. End with CNTL/Z. wsw-8250a-rpm(config)# int sw 1.951 p wsw-8250a-rpm(config-subif)# ip address 10.97.95.1 255.255.255.0 wsw-8250a-rpm(config-subif)# PVC RPM-FRSM2E3 0/951 wsw-8250a-rpm(config-if-atm-)# vbr-nrt 384 256 151 wsw-8250a-rpm(config-if-atm-)# encap aal5snap wsw-8250a-rpm(config-if-atm-)# ^Z
Building the FRSM-2E3-to-Trunk Connection
Syntax : addcon "port dlci cir chan_type serv_type [CAC] [Controller_Type] [mastership] [remoteConnId] "
port number -- values ranging from 1-2( 2T3/2E3/HS2), 1-256 (2CT3)
DLCI number -- value ranging from 0-1023(2CT3/2T3/2E3/HS2)
committed rate -- 0-1536000 bps for 2CT3; 0-44210000 bps for 2T3;
0-34010000 bps for 2E3 , 0-51840000 bps for HS2
chan type -- values 1-5, 1=NIW 2=SIW-transparent 3=SIW-xlation
4=FUNI 5=frForward
Egress service type -- 1 = highpriorityQ 2 = rtVBRQ
3 = nrtVBRQ 4 = aBRQ
5 = uBRQ
CAC -- Connection Admission Control (optional); 1 = enable, 2 = disable (default)
Controller Type (Signalling) -- 1: PVC (PAR) - Default , 2: SPVC (PNNI)
mastership -- 1 for master, 2 for slave
Remote end Connection ID -- Format :
NodeName.SlotNo.PortNo.Dlci OR
NodeName.SlotNo.PortNo.ControllerId.Dlci for FR end point OR
NodeName.SlotNo.PortNo.VPI.VCI for ATM end point.
Where controller ID can be 1(PAR),2(PNNI),3(TAG)
mgx8250b.1.3.VHS2E3.a > addcon 1 950 256000 3 3 2 1 1 mgx8250b.0.1.9.950
mgx8250b.1.3.VHS2E3.a > dspchans
DLCI Chan ServType I/EQDepth I/EQDEThre I/EECNThre Fst/ DE Type Alarm
--------- ---- -------- ----- ----- ----- ----- ----- ----- --- --- ----- -----
3.1.1.950 21 nrtVBR 1048575/1048575 524287/524287 104857/104857 Dis/Dis SIW-X Yes
Syntax : cnfchanpol "chan_num cir bc be ibs detag"
channel number -- value ranging from 16-4015(2CT3), 16-2015( 2T3/2E3/HS2)
committed rate -- 0-1536000 bps for 2CT3; 0-44210000 2T3;
0-34010000 bps for 2E3; 0-51840000 bps for HS2
committed burst -- 0-2097151 in bytes
excess burst -- 0-2097151 in bytes
initial burst -- 0-2097151 in bytes, Less than or equal to Bc
DE bit tagging -- 1 for enable, 2 for disable
mgx8250b.1.3.VHS2E3.a > cnfchanpol 21 256000 32000 16000 8000 2
Building the RPM-to-Trunk Connection
wsw-8250a-rpm# conf t <---Enter configuration commands, one per line. End with CNTL/Z. wsw-8250a-rpm(config)# addcon vcc switch 1.951 951 rname mgx8250a rslot 0 1 9 951 master local wsw-8250a-rpm(config)# ^Z
Building the Trunk-to-Trunk Connection
wsw-bpx3 TN StrataCom BPX 8620 9.2.10 Aug. 9 1999 10:09 EDT
From Remote Remote Route
11.1.9.951 NodeName Channel State Type Avoid COS O
11.1.9.951 wsw-bpx3 9.1.9.950 Ok atfr
Last Command: addcon 11.1.9.951 wsw-bpx3 9.1.9.950 atfr 906 * 1000 604 151 * * * *
wsw-bpx3 TN StrataCom BPX 8620 9.2.10 Aug. 9 1999 10:09 EDT
Conn: 11.1.9.951 wsw-bpx3 9.1.9.950 atfr Status:OK
PCR(0+1) % Util CDVT(0+1) SCR MBS
906/906 100/100 1000/1000 604/604 151/151
Policing VC Qdepth EFCI IBS
3 1280/1280 35/35 1/1
Path: Route information not applicable for local connections
wsw-bpx3 BXM : OK wsw-bpx3 BXM : OK
Line 11.1 : OK Line 9.1 : OK
OAM Cell RX: Clear NNI : OK
NNI : OK
This Command: dspcon 11.1.9.951
Verifying the Configuration
Use the ping command to verfy that you have a good connection.
/** The Ubiquitous Ping Test **/
wsw-8250a-rpm# ping 10.97.95.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.97.95.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/4 ms
/** Examine Channel Stats on BPX **/
wsw-bpx3 TN StrataCom BPX 8620 9.2.10 Aug. 9 1999 10:11 EDT
Channel Statistics for 11.1.9.951 Cleared: Aug. 9 1999 10:11 (-)
PCR: 906/906 cps Collection Time: 0 day(s) 00:00:06 Corrupted: NO
Traffic Cells CLP Avg CPS %util Chan Stat Addr: 30F6933C
From Port : 15 0 2 0 OAM Cell RX: Clear
To Network : 15 --- 2 0
From Network: 15 0 2 0
To Port : 15 0 2 0
Rx Frames Rcv : 5 NonCmplnt Dscd: 0 Rx Q Depth : 0
Tx Q Depth : 0 Rx CLP0 : 15 Rx Nw CLP0 : 15
Igr VSVD ACR : 0 Egr VSVD ACR : 0 Tx Clp0 Port : 15
Rx Clp0+1 Port: 15 NCmp CLP0 Dscd: 0 NCmp CLP1 Dscd: 0
Oflw CLP0 Dscd: 0 Oflw CLP1 Dscd: 0
This Command: dspchstats 11.1.9.951 1
Caveats
-
Since the FRSM defaults to no signaling and the routers default to Gang of Four (also known as Cisco LMI), the two devices will not communicate until they both agree on a protocol.
-
The encap frame ietf command is needed on the router for Frame Relay/ATM Service Interworking.
-
The VPI on RPM switch PVC is always 0.
-
It is necessary to match the shaping and policing parameters to prevent data loss.
NetPro Discussion Forums - Featured Conversations
| NetPro Discussion Forums - Featured Conversations for WAN Switching |
| Network Infrastructure: WAN Routing and Switching |
Related Information
- Cisco WAN Switching Solutions - Cisco Documentation
- Guide to New Names and Colors for WAN Switching Products
- Downloads - WAN Switching Software
- Technical Support - Cisco Systems
| Updated: Oct 04, 2005 | Document ID: 50105 |