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Table of Contents

Network Service Engine

Network Service Engine

This document describes how to configure network services engine (NSE) on
Cisco 7200 VXR routers. It includes the following sections:

Feature Overview

The network services engine (NSE) is the latest processor engine for Cisco 7200 VXR routers. NSE delivers wire rate OC-3 throughput while running concurrent high-touch WAN edge services. It is the first Cisco processing engine to offer integrated hardware acceleration increasing Cisco 7200 VXR series system performance by 50-300% for combined "high touch" edge services. NSE takes advantage of a new technology called Parallel eXpress Forwarding (PXF)

Benefits

Accelerated Services

The following features are accelerated on the NSE: (Network Address Translation) NAT, (weighted fair queuing) WFQ, and NetFlow for both enterprise and service provider customers.

PXF Field Upgradable

Parallel eXpress Forwarding (PXF) is based on microcode and can be upgraded with new software features in future IOS releases.

The PXF processor enables IP parallel processing functions that work with the primary processor to provide accelerated IP Layer 3 feature processing. The PXF processor off-loads IP packet processing and switching functions from the Route Processor (RP) to provide accelerated and highly consistent switching performance when coupled with one or more of several IP services features such as access control lists (ACLs), address translation, (quality of service) QoS, flow accounting, and traffic shaping.

PXF offers advantages of hardware-based switching power, plus the flexibility of a programmable architecture. The PXF architecture provides future-proofing---if additional features are added in the future, an application-specific integrated circuit (ASIC) will not be required. New features for accelerated services can be added by reprogramming the PXF processor.

System Requirements

An NSE-1 can be used on existing Cisco 7200 VXR series routers with Cisco IOS version 12.1(1)E or later.

High Performance

Network layer services such as traffic management, security, and QoS benefit significantly from NSE-1 high-performance. NSE-1 is the first Cisco processing engine to offer integrated hardware acceleration increasing Cisco 7200 VXR series system performance by 50 to 300 percent for combined "high-touch" edge services.

Related Documents

Supported Platforms

Supported Standards, MIBs, and RFCs

Standards

None

MIBs

For descriptions of supported MIBs and how to use MIBs, see the Cisco MIB web site on CCO at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.

RFCs

None

Prerequisites

Before enabling the PXF processor, you must have IP routing and IP Cisco Express Forwarding (CEF) switching turned on.

Configuration Tasks

The PXF processor is turned on by default. If it is ever disabled, you must enable it to take advantage of IP packet switching and feature acceleration.

Note Before enabling the PXF processor, you must have IP routing and IP CEF switching turned on.

Configuring the Network Services Engine

Command Purpose

Step 1 

Router# configure terminal

Enters global configuration mode.

Step 2 

Router (config)# [no] ip pxf

Enables PXF processing.

Verifying the Network Services Engine

Step 1 Enter the show pxf accounting command to view all interfaces.

Router# show pxf accounting ?
  ATM           ATM interface
  Ethernet      IEEE 802.3
  FastEthernet  FastEthernet IEEE 802.3
  Hssi          High Speed Serial Interface
  Null          Null interface
  POS           Packet over Sonet
  Serial        Serial
  summary       PXF summary statistics

Monitoring and Maintaining the NSE

Command Purpose 
Router# show pxf accounting

Displays all interfaces.

Router# show pxf accounting summary

Displays a summary of PXF switching statistics.

Router# show pxf accounting pos

Shows PXF switching statistics for packet OC-3 interfaces.

Router# show pxf crash

Shows PXF crash information.

Router# show pxf debug cef

To start debugging for CEF under PXF.

Router# show pxf debug nat

Displays debug information for NAT under PXF.

Router# show pxf feature cef

Displays PXF routing feature tables for CEF.

Router# show pxf feature nat

Displays PXF routing tables for NAT.

Configuration Examples

This section provides two configuration examples using show commands:

    Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-JS-M), Version 12.1(1)E 
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Wed 22-Mar-00 08:37 by Biff
Image text-base:0x60008900, data-base:0x6141C000
 
  (display text omitted)
 
cisco 7206VXR (NSE-1) processor (revision A) with 122880K/8192K bytes of memory.
R7000 CPU at 262Mhz, Implementation 39, Rev 1.0, 256KB L2 Cache6 slot VXR midplane, Version 2.0
  (display text omitted)
 
PXF processor tmc is running.
6 FastEthernet/IEEE 802.3 interface(s)
10 Serial network interface(s)
2 HSSI network interface(s)
2 Channelized T3 port(s)
125K bytes of non-volatile configuration memory.
 

    Router# show c7200
Network IO Interrupt Throttling:
throttle count=0, timer count=0
active=0, configured=0
netint usec=4000, netint mask usec=200
 
C7200 Midplane EEPROM:
Hardware revision 2.0           Board revision A0
Serial number     16061833      Part number    73-3223-05
Test history      0x0           RMA number     00-00-00
MAC=00b0.4aae.4000, MAC Size=1024
EEPROM format version 1, Model=0x6
EEPROM contents (hex):
0x20:01 06 02 00 00 F5 15 89 49 0C 97 05 00 B0 4A AE
0x30:40 00 04 00 00 00 00 00 00 01 13 50 00 00 FF 00
 
C7206VXR CPU EEPROM:
Hardware revision 1.2           Board revision A0
Serial number     15053437      Part number    73-3453-04
Test history      0x0           RMA number     00-00-00
EEPROM format version 1
EEPROM contents (hex):
0x20:01 C2 01 02 00 E5 B2 7D 49 0D 7D 04 00 00 00 00
0x30:50 00 00 00 00 01 14 00 00 00 FF FF FF FF FF FF
 
C7200 PE EEPROM:
Hardware Revision        :1.0
Top Assy. Part Number    :800-05272-04
Part Number              :73-4068-02
Board Revision           :A0
PCB Serial Number        :12342775   
RMA History              :00
Fab Version              :02
Fab Part Number          :28-3146-02
Product Number           :NSE1
EEPROM format version 4
EEPROM contents (hex):
0x00:04 FF 40 00 DE 41 01 00 C0 46 03 20 00 14 98 04
0x10:82 49 0F E4 02 42 41 30 C1 8B 31 32 33 34 32 37
0x20:37 35 20 20 20 04 00 02 02 85 1C 0C 4A 02 CB 84
0x30:4E 53 45 31 FF FF FF FF FF FF FF FF FF FF FF FF
0x40:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x50:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x60:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x70:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

Command Reference

This section documents new commands. All other commands used with this feature are documented in the Cisco IOS Release 12.1(1)E command reference publications.

show pxf accounting

To show PXF switching statistics for individual interfaces, use the show pxf accounting EXEC command.

show pxf accounting

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Usage Guidelines
Keyword Interface Type

Ethernet

Ethernet interface

Null

Null interface

POS

Packet OC-3 interface

Serial

Synchronous serial interface

Summary

PXF summary statistics

Examples

The following is sample output from the show pxf accounting command:

Router#sh pxf accounting ?
  Ethernet  IEEE 802.3
  Null      Null interface
  POS       Packet over Sonet
  Serial    Serial
  summary   PXF summary statistics

Related Commands
Command Description

show pxf accounting POS

Displays Packet over Sonet interface information.

show pxf accounting summary

Displays a summary of PXF switching statistics.

show pxf accounting ethernet

To get PXF switching statistics for ethernet interfaces, use the show pxf accounting ethernet EXEC command.

show pxf accounting ethernet [slot/port]

Syntax Description

slot

(Optional) Backplane slot number on the Cisco 7200 VXR series. On the Cisco 7200 VXR series, the value can be 0 to 6.

port

(Optional) Port number of the interface. On the Cisco 7200 VXR series, the value can be 0 to 5 for the ethernet interface.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following example is sample output from the show pxf accounting ethernet command using a Packet OC-3 interface in slot 4 on a Cisco 7200 VXR series router:

router#show pxf accounting ethernet4/0
               Interface    Pkts In   Chars In   Pkts Out  Chars Out     Punted
Ethernet4/0          0          0        122      11490          4          0

Related Commands Ethernet4/0 0 0 122 11490 4 0
Command Description

show pxf accounting

Displays all interfaces.

show pxf accounting null

To get PXF switching statistics for NULL interfaces, use the show pxf accounting null EXEC command.

show pxf accounting null number

Syntax Description

number

Enter a NULL interface value of 0.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Related Commands
Command Description

show pxf accounting

Displays all interfaces.

show pxf accounting pos

To get PXF switching statistics for packet OC-3 interfaces, use the show pxf accounting pos EXEC command.

show pxf accounting pos [slot/port]

Syntax Description

slot

(Optional) Backplane slot number on the Cisco 7200 VXR series. On the Cisco 7200 VXR series, the value can be 0 to 6.

port

(Optional) Port number of the interface. On the Cisco 7200 VXR series. Choose 0 as the value for the pos interface.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following example is sample output from the show pxf accounting POS command using a Packet OC-3 interface in slot 4 on a Cisco 7200 VXR series router:

    Router# show pxf accounting POS
                    Pkts          Drops   RP Processed        Ignored
                   Total              0             91              0
 
PXF Statistic:
rp2tt_pkts:91 pkts
rp2tt_switch_raw:91 pkts
punt_pkts: 91 pkts
interrupts:80 times 
intr_misses:4 times
intr_pkts: 93 pkts

    Interface 	Pkts In	Chars In	Pkts Out	Chars Out	Punted
FastEthernet0/0 	 0	0	0		0	 0
Ethernet5/0          0		0	0 		0		 0
Ethernet5/1          0		0	0	0				91
Ethernet5/2          0		0	0	0				 0
Ethernet5/3          0		0	0	0				 0

Related Commands
Command Description

show pxf accounting

Displays all interfaces.

show pxf accounting serial

To get PXF switching statistics for serial interfaces, use the show pxf accounting serial EXEC command.

show pxf accounting serial [slot/port]

Syntax Description

slot

(Optional) Backplane slot number on the Cisco 7200 VXR series. Choose a value between 0 and 6.

port

(Optional) Port number of the serial interface. On the Cisco 7200 VXR series. Choose a value between 0 and 5.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following example is sample output from the show pxf accounting serial command using a serial interface in slot 5 on a Cisco 7200 VXR series router:

router#sh pxf accounting serial 5/0
		Interface    Pkts In   Chars In   Pkts Out  Chars Out     Punted
	Serial5/0          0          0          0          0          0
 




Command
Description



 show pxf accounting 


 Displays all interfaces.

show pxf accounting summary

To get a summary of PXF switching statistics, use the show pxf accounting summary EXEC command.

show pxf accounting summary

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following example is sample output from the show pxf accounting summary command:

    Router# show pxf accounting summary 
                    Pkts          Drops   RP Processed        Ignored
                   Total              0             91              0
 
PXF Statistic:
rp2tt_pkts:91 pkts
rp2tt_switch_raw:91 pkts
punt_pkts: 91 pkts
interrupts:80 times 
intr_misses:4 times
intr_pkts: 93 pkts

    Interface 	Pkts In	Chars In	Pkts Out	Chars Out	Punted
FastEthernet0/0 	 0	0	0		0	 0
Ethernet5/0          0		0	0 		0		 0
Ethernet5/1          0		0	0	0				91
Ethernet5/2          0		0	0	0				 0
Ethernet5/3          0		0	0	0				 0

Related Commands
Command Description

show pxf accounting

Displays all interfaces.

show pxf crash

To show PXF crash information, use the show pxf crash EXEC command.

show pxf crash

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following is sample output from the show pxf crash command:

    router#show pxf crash
  EX_Type = 0x80000000
  EX_ID(b0~3,16~17) = 0x00400
  CPU_EX_ID(b0~15) = 0x0004
  IHB_EX_Type(b0~5) = 0x00
  XRAM0(b0~13) = 0x00000
  XRAM1(b0~13) = 0x00000
  XRAM2(b0~13) = 0x00000
  XRAM3(b0~13) = 0x00000
  Pipeline:7FDEFD pdone[3210]:1F  17  17  1D
 
ICM0(b4~13) = 0x00000  ICM1(b4~13) = 0x00000
ICM2(b4~13) = 0x00010  ICM3(b4~13) = 0x00000
LOCK0(b0~4) = 0x00000  LOCK1(b0~4) = 0x00000
LOCK2(b0~4) = 0x00000  LOCK3(b0~4) = 0x00000
CPU0/2: SW EX Type=0x00000000 LBUS EX Type=0x00000081 HW EX
Type=0x00000400
 
CPU:row=0x0 column=0x2 cpu=0x2
 PC:0000098E  LR:0000087F  CR:002C4C00
 r0:00000000  r1:8001CEA0  r2:80784390  r3:00000000
 r4:00005400  r5:80D3BA04  r6:80A7CA00  r7:00000004
 r8:00000000  r9:00000008 r10:80092324 r11:800A6200
r12:00000033 r13:00000008 r14:00000000 r15:00000000
  misr1a:00000000 misr1bhi:00000000 misr1blo:00000000  misr2hi:00000000
 misr2lo:00000000  reserve:00000000  reserve:00000000  reserve:00000000
  sisr1a:01000040   sisr1b:00000000     irhi:4402200F     irlo:00000000
cAll:C20DE822 DCD1:00020400 DCD2:00000002 CNTL:00000000
TBuf intr 0:1111111F
TBuf intr 1:020FFFF0
TBuf intr 2:00003C80
TBuf intr 3:80000000
TBuf intr 4:00000400
Xram return:00000000
Icram return hi:80024E00
Icram return lo:800A4E00
TBuf addr 0:005E6800 TBuf sblock1 0:8078A374 TBuf sblock0 0:804FD600
TBuf addr 1:005E6800 TBuf sblock1 1:8078A374 TBuf sblock0 1:804FD600
TBuf addr 2:005E6800 TBuf sblock1 2:8078A374 TBuf sblock0 2:804FD600
TBuf addr 3:005E6800 TBuf sblock1 3:8078A374 TBuf sblock0 3:804FD600
TBuf addr 4:005E6800 TBuf sblock1 4:8078A374 TBuf sblock0 4:804FD600
TBuf addr 5:005E6800 TBuf sblock1 5:8078A374 TBuf sblock0 5:804FD600
TBuf addr 6:005E6800 TBuf sblock1 6:8078A374 TBuf sblock0 6:804FD600
TBuf addr 7:005E6800 TBuf sblock1 7:8078A374 TBuf sblock0 7:804FD600

show pxf debug cef

To start debugging for (Cisco Express Forwarding) CEF under PXF, use the show pxf debug cef EXEC command.

show pxf debug cef

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following is sample output from the show pxf debug cef command:

router# show pxf debug cef 
PXF(CEF): id 0x116F8D(0x11): 171.69.12.136->255.255.255.255 punted to RP.
PXF(CEF): id 0x116F8E(0x11): 130.240.112.8->224.2.172.238 punted to RP.
PXF(CEF): id 0x116F8F(0x10): 171.69.12.150->171.69.2.72 switched by PXF.
PXF(CEF): id 0x116F90(0x11): 171.69.225.34->224.2.188.149 punted to RP.
PXF(CEF): id 0x116F92(0x11): 198.32.163.74->224.2.255.57 punted to RP.
PXF(CEF): id 0x116F93(0x11): 128.223.83.25->224.2.186.225 punted to RP.

Related Commands
Command Description

show pxf debug

Displays the state of each PXF debugging option.

show pxf debug nat

Displays debug information for NAT under PXF.

show pxf debug nat

To display debug information for (Network Address Translation) NAT under PXF, use the show pxf debug nat EXEC command.

show pxf debug nat number

Syntax Description

number

Enter a value from 1 to 256 packet counts.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following is sample output from the show pxf debug nat command:

router# show pxf debug nat    
PXF(NAT): id 0x1156AD(0xA): 171.69.2.133->171.69.12.167 in process, ports=0x3506
5D, (ttl, proto, chksum)=0xFA116E18.
PXF(NAT): id 0x1156AE(0xA): 171.69.2.133->171.69.12.167 in process, ports=0x3506
5E, (ttl, proto, chksum)=0xFA116E17.
PXF(NAT): id 0x1156AF(0x5): 192.168.0.3->171.69.2.133 was punted, ports=0x303EBB
8, (ttl, proto, chksum)=0x7F01B842.

Related Commands
Command Description

show pxf debug

Displays the state of each PXF debugging option.

show pxf debug cef

Starts debugging for CEF under PXF.

show pxf feature cef

To display PXF routing feature tables for (Cisco Express Forwarding) CEF, use the show pxf feature cef EXEC command.

show pxf feature cef entry

Syntax Description

entry

Display PXF entry.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following is sample output from the show pxf feature cef command:

    router# show pxf feature cef entry
Shadow 16-4-4-8 PXF Mtrie:
  41 leaves, 1968 leaf bytes, 15 nodes, 267000 node bytes
  5 invalidations
  46 prefix updates
  refcounts: 66746 leaf, 66720 node
 
Prefix/Length        Refcount   Parent
0.0.0.0/0           62282    
0.0.0.0/32          3           0.0.0.0/0
171.69.12.128/27    34          0.0.0.0/0
171.69.12.128/32    3           171.69.12.128/27
171.69.12.129/32    3           171.69.12.128/27
171.69.12.130/32    3           171.69.12.128/27
171.69.12.131/32    3           171.69.12.128/27
171.69.12.132/32    3           171.69.12.128/27
171.69.12.138/32    3           171.69.12.128/27
171.69.12.139/32    3           171.69.12.128/27
171.69.12.140/32    3           171.69.12.128/27
171.69.12.141/32    3           171.69.12.128/27
171.69.12.142/32    3           171.69.12.128/27
171.69.12.143/32    3           171.69.12.128/27
171.69.12.145/32    3           171.69.12.128/27
171.69.12.146/32    3           171.69.12.128/27
171.69.12.147/32    3           171.69.12.128/27

(display text omitted)

Related Commands
Command Description

show pxf feature nat

Displays PXF routing feature tables for NAT.

show pxf feature nat

To display PXF routing tables for (Network Address Translation) NAT, use the show pxf feature nat EXEC command.

show pxf feature nat [entry | stat | tcp]

Syntax Description

entry

Displays NAT information.

stat

Displays NAT processing information.

tcp

Displays NAT TCP logging information.

Defaults

No default behavior or values.

Command Modes

EXEC

Command History
Release Modification

12.1(1)E

This command was introduced.

Examples

The following is sample output from the show pxf feature entry command:

router#show pxf feature nat entry
--- 171.69.12.175      192.168.0.129      ---                ---
--- 171.69.12.163      192.168.0.7        ---                ---
--- 171.69.12.161      192.168.0.13       ---                ---
--- 171.69.12.162      192.168.0.3        ---                ---
--- 171.69.12.165      192.168.0.8        ---                ---
--- 171.69.12.168      192.168.0.14       ---                ---
--- 171.69.12.170      192.168.0.12       ---                ---
--- 171.69.12.166      192.168.0.15       ---                ---

Related Commands --- 171.69.12.164 192.168.0.16 --- ---
Command Description

show pxf feature cef

Displays PXF routing feature tables for CEF.


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Posted: Mon Jun 19 15:58:53 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.