Example for Configuring Interface-specific UCMP for IP Packet Forwarding

NE20E-S2 V800R011C10 Configuration Guide - IP Services 02

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This section provides an example for configuring interface-specific UCMP for IP packet forwarding.

Networking Requirements

As shown in Figure 10-2, Device A and Device E are connected through three links that pass through Device B, Device C, and Device D, respectively. The bandwidth of the link from Device A to Device B is 1 Gbit/s, that from Device A to Device C is 1 Gbit/s, and that from Device A to Device D is 10 Gbit/s. To allow traffic to be load balanced among these paths, configure UCMP for IP packet forwarding. In this example, configure UCMP on specified interfaces, not on an entire router.

Figure 10-2 Configuring interface-specific UCMP

The configurations in this example are performed on Device A, Device B, Device C, Device D, and Device E. HUAWEI NE20E-S2s can function as Device A through Device E.

Table 10-8 Device names, interface names, and IP addresses

Device Name	Interface Name	IP Address
Device A	GE 0/1/8	10.30.1.1/24
	GE 0/3/0	10.40.1.1/24
	GE 0/2/0	10.50.1.1/24
Device B	GE 0/1/0	10.30.1.2/24
Device B	GE 0/2/0	10.60.1.2/24
Device C	GE 0/1/0	10.40.1.2/24
Device C	GE 0/2/0	10.70.1.2/24
Device D	GE 0/1/0	10.50.1.2/24
Device D	GE 0/2/0	10.80.1.2/24
Device E	GE 0/1/8	10.60.1.1/24
	GE 0/3/0	10.70.1.1/24
	GE 0/2/0	10.80.1.1/24

Configuration Roadmap

The configuration roadmap is as follows:

Configure an IGP on each router. IS-IS is used in this example.
Enable UCMP on each interface, allowing three paths between Device A and Device E to perform UCMP during IP packet forwarding.

Data Preparation

To complete the configuration, you need the following data:

Type and number of each interface
IP address of each interface
IS-IS area ID and level for each router

Procedure

Assign an IP address to each interface. For configuration details, see Configuration Files in this section.

Configure basic IS-IS functions.

# Configure Device A.

[~DeviceA] isis 1

[*DeviceA-isis-1] is-level level-1

[*DeviceA-isis-1] network-entity 10.0000.0000.0001.00

[*DeviceA-isis-1] commit

[~DeviceA-isis-1] quit

[~DeviceA] interface gigabitethernet 0/1/0

[~DeviceA-GigabitEthernet0/1/0] isis enable 1

[*DeviceA-GigabitEthernet0/1/0] quit

[*DeviceA] interface gigabitethernet 0/2/0

[*DeviceA-GigabitEthernet0/2/0] isis enable 1

[*DeviceA-GigabitEthernet0/2/0] quit

[*DeviceA] interface gigabitethernet 0/1/8

[*DeviceA-GigabitEthernet0/1/8] isis enable 1

[*DeviceA-GigabitEthernet0/1/8] quit

[*DeviceA] interface gigabitethernet 0/3/0

[*DeviceA-GigabitEthernet0/3/0] isis enable 1

[*DeviceA-GigabitEthernet0/3/0] quit

[*DeviceA] commit

# Configure Device B.

[~DeviceB] isis 1

[*DeviceB-isis-1] is-level level-1

[*DeviceB-isis-1] network-entity 10.0000.0000.0002.00

[*DeviceB-isis-1] commit

[~DeviceB-isis-1] quit

[~DeviceB] interface gigabitethernet 0/1/0

[~DeviceB-GigabitEthernet0/1/0] isis enable 1

[*DeviceB-GigabitEthernet0/1/0] quit

[*DeviceB] interface gigabitethernet 0/2/0

[*DeviceB-GigabitEthernet0/2/0] isis enable 1

[*DeviceB-GigabitEthernet0/2/0] quit

[*DeviceB] commit

# Configure Device C.

[~DeviceC] isis 1

[*DeviceC-isis-1] is-level level-1

[*DeviceC-isis-1] network-entity 10.0000.0000.0003.00

[*DeviceC-isis-1] commit

[~DeviceC-isis-1] quit

[~DeviceC] interface gigabitethernet 0/1/0

[~DeviceC-GigabitEthernet0/1/0] isis enable 1

[*DeviceC-GigabitEthernet0/1/0] quit

[*DeviceC] interface gigabitethernet 0/2/0

[*DeviceC-GigabitEthernet0/2/0] isis enable 1

[*DeviceC-GigabitEthernet0/2/0] quit

[*DeviceC] commit

# Configure Device D.

[~DeviceD] isis 1

[*DeviceD-isis-1] is-level level-1

[*DeviceD-isis-1] network-entity 10.0000.0000.0004.00

[*DeviceD-isis-1] commit

[~DeviceD-isis-1] quit

[~DeviceD] interface gigabitethernet 0/1/0

[~DeviceD-GigabitEthernet0/1/0] isis enable 1

[*DeviceD-GigabitEthernet0/1/0] quit

[*DeviceD] interface gigabitethernet 0/2/0

[*DeviceD-GigabitEthernet0/2/0] isis enable 1

[*DeviceD-GigabitEthernet0/2/0] quit

[*DeviceD] commit

# Configure Device E.

[~DeviceE] isis 1

[*DeviceE-isis-1] is-level level-1

[*DeviceE-isis-1] network-entity 10.0000.0000.0005.00

[*DeviceE-isis-1] commit

[~DeviceE-isis-1] quit

[~DeviceE] interface gigabitethernet 0/1/0

[~DeviceE-GigabitEthernet0/1/0] isis enable 1

[*DeviceE-GigabitEthernet0/1/0] quit

[*DeviceE] interface gigabitethernet 0/2/0

[*DeviceE-GigabitEthernet0/2/0] isis enable 1

[*DeviceE-GigabitEthernet0/2/0] quit

[*DeviceE] interface gigabitethernet 0/1/8

[*DeviceE-GigabitEthernet0/1/8] isis enable 1

[*DeviceE-GigabitEthernet0/1/8] quit

[*DeviceE] interface gigabitethernet 0/3/0

[*DeviceE-GigabitEthernet0/3/0] isis enable 1

[*DeviceE-GigabitEthernet0/3/0] quit

[*DeviceE] commit

Enable UCMP on every outbound interface of Device A.

[~routerA] interface gigabitethernet 0/2/0
[~routerA-GigabitEthernet0/2/0] load-balance unequal-cost enable
[*routerA-GigabitEthernet0/2/0] quit
[*routerA] interface gigabitethernet 0/1/8
[*routerA-GigabitEthern0/1/8] load-balance unequal-cost enable
[*routerA-GigabitEthern0/1/8] quit
[*routerA] interface gigabitethernet 0/3/0
[*routerA-GigabitEthernet0/3/0] load-balance unequal-cost enable
[*routerA-GigabitEthernet0/3/0] quit
[*routerA] commit

The traffic tester measures the traffic bandwidth values on GE 0/1/8 (10.30.1.1/24), GE 0/3/0 (10.40.1.1/24), and GE 0/2/0 (10.50.1.1/24) of Device A and obtains the traffic ratio of 1:1:10.

Configuration Files

Device A configuration file

#
 sysname routerA
#
isis 1
 is-level level-1
 network-entity 10.0000.0000.0001.00
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip address 10.1.1.1 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/2/0
 undo shutdown
 load-balance unequal-cost enable
 ip address 10.50.1.1 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/3/0
 undo shutdown
 load-balance unequal-cost enable
 ip address 10.40.1.1 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/1/8
 undo shutdown
 load-balance unequal-cost enable
 ip address 10.30.1.1 255.255.255.0
 isis enable 1
#
return

Device B configuration file

#
 sysname routerB
#
isis 1
 is-level level-1
 network-entity 10.0000.0000.0002.00
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip address 10.30.1.2 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/2/0
 undo shutdown
 ip address 10.60.1.2 255.255.255.0
 isis enable 1
#
return

Device C configuration file

#
 sysname routerC
#
isis 1
is-level level-1
 network-entity 10.0000.0000.0003.00
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip address 10.40.1.2 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/2/0
 undo shutdown
 ip address 10.70.1.2 255.255.255.0
 isis enable 1
#
return

Device D configuration file

#
 sysname routerD
#
isis 1
 is-level level-1
 network-entity 10.0000.0000.0004.00
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip address 10.50.1.2 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/2/0
 undo shutdown
 ip address 10.80.1.2 255.255.255.0
 isis enable 1
#
return

Device E configuration file

#
 sysname routerE
#
isis 1
 is-level level-1
 network-entity 10.0000.0000.0005.00
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip address 10.20.1.1 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/2/0
 undo shutdown
 ip address 10.80.1.1 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/3/0
 undo shutdown
 ip address 10.70.1.1 255.255.255.0
 isis enable 1
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.60.1.1 255.255.255.0
 isis enable 1
#
return

Translation

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Updated: 2020-02-07

Document ID: EDOC1100125470

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Example for Configuring Interface-specific UCMP for IP Packet Forwarding

Networking Requirements

Configuration Roadmap

Data Preparation

Procedure

Configuration Files

Related Version

Related Documents

About Huawei

How to Buy

Partner

Resources

Others

Enterpise App