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CloudEngine 12800 and 12800E V200R005C10 Configuration Guide - IP Unicast Routing

This document describes the configurations of IP Unicast Routing, including IP Routing, Static Route, RIP, RIPng, OSPF, OSPFv3, IPv4 IS-IS, IPv6 IS-IS, BGP, Routing Policy, and PBR.

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Example for Configuring a BGP Route Reflector

Example for Configuring a BGP Route Reflector

Networking Requirements

As shown in Figure 9-27, eight Switches need to form an IBGP network. Full-mesh BGP connections have been established between SwitchB, SwitchD, and SwitchE. Users require that the IBGP network be formed without interrupting full-mesh BGP connections between SwitchB, SwitchD, and SwitchE and require simplified device configuration and management.

Figure 9-27 Networking diagram of configuring a BGP route reflector



Table 9-13 Data preparation

Switch

Interface

VLANIF Interface

IP Address

SwitchA

10GE 1/0/1

VLANIF 10

10.1.1.2/24

SwitchA

10GE 1/0/2

VLANIF 30

10.1.3.2/24

SwitchA

10GE 1/0/3

VLANIF 100

172.16.1.1/24

SwitchB

10GE 1/0/1

VLANIF 10

10.1.1.1/24

SwitchB

10GE 1/0/2

VLANIF 20

10.1.2.1/24

SwitchB

10GE 1/0/3

VLANIF 40

10.1.4.1/24

SwitchB

10GE 1/0/4

VLANIF 50

10.1.5.1/24

SwitchC

10GE 1/0/1

VLANIF 30

10.1.3.1/24

SwitchC

10GE 1/0/2

VLANIF 20

10.1.2.2/24

SwitchC

10GE 1/0/3

VLANIF 70

10.1.7.1/24

SwitchC

10GE 1/0/4

VLANIF 80

10.1.8.1/24

SwitchC

10GE 1/0/5

VLANIF 90

10.1.9.1/24

SwitchD

10GE 1/0/1

VLANIF 40

10.1.4.2/24

SwitchD

10GE 1/0/2

VLANIF 60

10.1.6.1/24

SwitchE

10GE 1/0/1

VLANIF 50

10.1.5.2/24

SwitchE

10GE 1/0/2

VLANIF 60

10.1.6.2/24

SwitchF

10GE 1/0/1

VLANIF 70

10.1.7.2/24

SwitchG

10GE 1/0/1

VLANIF 80

10.1.8.2/24

SwitchH

10GE 1/0/1

VLANIF 90

10.1.9.2/24

Configuration Roadmap

The configuration roadmap is as follows:

  1. Configure SwitchB as the route reflector of Cluster1 and SwitchD and SwitchE as the clients of SwitchB. Prohibit communication between the clients to form an IBGP network without interrupting full-mesh BGP connections between SwitchB, SwitchD, and SwitchE.

  2. Configure SwitchC as the route reflector of Cluster2 and SwitchF, SwitchG, and SwitchH as the clients of SwitchC to simplify device configuration and management.

Procedure

  1. Configure the VLAN to which each interface belongs.

    <HUAWEI> system-view
[~HUAWEI] sysname SwitchA
[*HUAWEI] commit
[~SwitchA] vlan batch 10 30 100
[*SwitchA] interface 10ge 1/0/1
[*SwitchA-10GE1/0/1] port link-type trunk
[*SwitchA-10GE1/0/1] port trunk allow-pass vlan 10
[*SwitchA-10GE1/0/1] quit
[*SwitchA] interface 10ge 1/0/2
[*SwitchA-10GE1/0/2] port link-type trunk
[*SwitchA-10GE1/0/2] port trunk allow-pass vlan 30
[*SwitchA-10GE1/0/2] quit
[*SwitchA] interface 10ge 1/0/3
[*SwitchA-10GE1/0/3] port link-type trunk
[*SwitchA-10GE1/0/3] port trunk allow-pass vlan 100
[*SwitchA-10GE1/0/3] quit
[*SwitchA] commit

    The configurations of SwitchB, SwitchC, SwitchD, SwitchE, SwitchF, SwitchG, and SwitchH are similar to the configuration of SwitchA, and are not provided here.

  2. Configure VLANIF interfaces and assign IP addresses to the VLANIF interfaces.

    [~SwitchA] interface vlanif 10
[*SwitchA-Vlanif10] ip address 10.1.1.2 24
[*SwitchA-Vlanif10] quit
[*SwitchA] interface vlanif 30
[*SwitchA-Vlanif30] ip address 10.1.3.2 24
[*SwitchA-Vlanif30] quit
[*SwitchA] interface vlanif 100
[*SwitchA-Vlanif100] ip address 172.16.1.1 24
[*SwitchA-Vlanif100] quit
[*SwitchA] commit

    The configurations of SwitchB, SwitchC, SwitchD, SwitchE, SwitchF, SwitchG, and SwitchH are similar to the configuration of SwitchA, and are not provided here.

  3. Configure IBGP connections between clients, non-clients, and route reflectors.

    # Configure SwitchF.

    [~SwitchF] bgp 65010
[*SwitchF-bgp] router-id 192.168.6.6
[*SwitchF-bgp] peer 10.1.7.1 as-number 65010
[*SwitchF-bgp] quit
[*SwitchF] commit

    The configurations of SwitchA, SwitchB, SwitchC, SwitchD, SwitchE, SwitchG, and SwitchH are similar to the configuration of SwitchF, and are not provided here.

  4. Configure a route reflector on SwitchB and SwitchC.

    # Configure SwitchB.

    [~SwitchB] bgp 65010
    [*SwitchB–bgp] router-id 192.168.2.2
    [*SwitchB–bgp] group in_rr internal
    [*SwitchB–bgp] peer 10.1.4.2 group in_rr
    [*SwitchB–bgp] peer 10.1.5.2 group in_rr
    [*SwitchB–bgp] ipv4-family unicast
    [*SwitchB–bgp-af-ipv4] peer in_rr reflect-client
    [*SwitchB–bgp-af-ipv4] undo reflect between-clients
    [*SwitchB–bgp-af-ipv4] reflector cluster-id 1
    [*SwitchB–bgp-af-ipv4] commit
    [~SwitchB–bgp-af-ipv4] quit

    # Configure SwitchC.

    [~SwitchC] bgp 65010
    [*SwitchC-bgp] router-id 192.168.3.3
    [*SwitchC-bgp] group in_rr internal
    [*SwitchC-bgp] peer 10.1.7.2 group in_rr 
    [*SwitchC-bgp] peer 10.1.8.2 group in_rr
    [*SwitchC-bgp] peer 10.1.9.2 group in_rr
    [*SwitchC-bgp] ipv4-family unicast
    [*SwitchC-bgp-af-ipv4] peer in_rr reflect-client
    [*SwitchC-bgp-af-ipv4] reflector cluster-id 2
    [*SwitchC-bgp-af-ipv4] commit
    [~SwitchC-bgp-af-ipv4] quit

    # View the BGP routing table of SwitchD.

    [~SwitchD] display bgp routing-table 172.16.1.0
    BGP local router ID : 192.168.4.4
 Local AS number : 65010
 Paths:   1 available, 0 best, 0 select, 0 best-external, 0 add-path
 BGP routing table entry information of 172.16.1.0/24:
 From: 10.1.4.1 (2.2.2.2)
 Route Duration: 00h00m14s
 Relay IP Nexthop: 0.0.0.0
 Relay IP Out-Interface:
 Original nexthop: 10.1.1.2
 Qos information : 0x0
 AS-path Nil, origin igp, MED 0, localpref 100, pref-val 0, internal, pre 255
 Originator:  192.168.1.1
 Cluster list: 0.0.0.1
 Not advertised to any peer yet

    In the BGP routing table, you can see that SwitchD has learned from SwitchB the route advertised from SwitchA, and see the Originator_ID and Cluster_List attributes of the route.

Configuration Files

  • Configuration file of SwitchA

    #
sysname SwitchA
#
vlan batch 10 30 100
#
interface Vlanif10
 ip address 10.1.1.2 255.255.255.0
#
interface Vlanif30
 ip address 10.1.3.2 255.255.255.0
#
interface Vlanif100
 ip address 172.16.1.1 255.255.255.0
#
interface 10GE1/0/1
 port link-type trunk
 port trunk allow-pass vlan 10
#
interface 10GE1/0/2
 port link-type trunk
 port trunk allow-pass vlan 30
#
interface 10GE1/0/3
 port link-type trunk
 port trunk allow-pass vlan 100
#
bgp 65010
 router-id 192.168.1.1
 peer 10.1.1.1 as-number 65010
 peer 10.1.3.1 as-number 65010
 #
 ipv4-family unicast
  network 172.16.1.0 255.255.255.0
  peer 10.1.1.1 enable
  peer 10.1.3.1 enable
#
return

  • Configuration file of SwitchB

    #
sysname SwitchB
#
vlan batch 10 20 40 50
#
interface Vlanif10
 ip address 10.1.1.1 255.255.255.0
#
interface Vlanif20
 ip address 10.1.2.1 255.255.255.0
#
interface Vlanif40
 ip address 10.1.4.1 255.255.255.0
#
interface Vlanif50
 ip address 10.1.5.1 255.255.255.0
#
interface 10GE1/0/1
 port link-type trunk
 port trunk allow-pass vlan 10
#
interface 10GE1/0/2
 port link-type trunk
 port trunk allow-pass vlan 20
#
interface 10GE1/0/3
 port link-type trunk
 port trunk allow-pass vlan 40
#
interface 10GE1/0/4
 port link-type trunk
 port trunk allow-pass vlan 50
#
bgp 65010
 router-id 192.168.2.2
 peer 10.1.1.2 as-number 65010
 peer 10.1.2.2 as-number 65010
 group in_rr internal
 peer 10.1.4.2 as-number 65010
 peer 10.1.4.2 group in_rr
 peer 10.1.5.2 as-number 65010
 peer 10.1.5.2 group in_rr
 #
 ipv4-family unicast
  undo reflect between-clients
  reflector cluster-id 1
  peer 10.1.1.2 enable
  peer 10.1.2.2 enable
  peer in_rr enable
  peer in_rr reflect-client
  peer 10.1.4.2 enable
  peer 10.1.4.2 group in_rr
  peer 10.1.5.2 enable
  peer 10.1.5.2 group in_rr  
#
return

  • Configuration file of SwitchC

    #
sysname SwitchC
#
vlan batch 20 30 70 80 90
#
interface Vlanif20
 ip address 10.1.2.2 255.255.255.0
#
interface Vlanif30
 ip address 10.1.3.1 255.255.255.0
#
interface Vlanif70
 ip address 10.1.7.1 255.255.255.0
#
interface Vlanif80
 ip address 10.1.8.1 255.255.255.0
#
interface Vlanif90
 ip address 10.1. 255.255.255.0
#
interface 10GE1/0/1
 port link-type trunk
 port trunk allow-pass vlan 30
#
interface 10GE1/0/2
 port link-type trunk
 port trunk allow-pass vlan 20
#
interface 10GE1/0/3
 port link-type trunk
 port trunk allow-pass vlan 70
#
interface 10GE1/0/4
 port link-type trunk
 port trunk allow-pass vlan 80
#
interface 10GE1/0/5
 port link-type trunk
 port trunk allow-pass vlan 90
#
bgp 65010
 router-id 192.168.3.3
 peer 10.1.2.1 as-number 65010
 peer 10.1.3.2 as-number 65010
 group in_rr internal
 peer 10.1.7.2 as-number 65010
 peer 10.1.7.2 group in_rr
 peer 10.1.8.2 as-number 65010
 peer 10.1.8.2 group in_rr
 peer 10.1.9.2 as-number 65010
 peer 10.1.9.2 group in_rr
 #
 ipv4-family unicast
  reflector cluster-id 2
  peer 10.1.2.1 enable
  peer 10.1.3.2 enable
  peer in_rr enable
  peer in_rr reflect-client
  peer 10.1.7.2 enable
  peer 10.1.7.2 group in_rr
  peer 10.1.8.2 enable
  peer 10.1.8.2 group in_rr
  peer 10.1.9.2 enable
  peer 10.1.9.2 group in_rr
#
return

  • Configuration file of SwitchD

    #
sysname SwitchD
#
vlan batch 40 60
#
interface Vlanif40
 ip address 10.1.4.2 255.255.255.0
#
interface Vlanif60
 ip address 10.1.6.1 255.255.255.0
#
interface 10GE1/0/1
 port link-type trunk
 port trunk allow-pass vlan 40
#
interface 10GE1/0/2
 port link-type trunk
 port trunk allow-pass vlan 60
#
bgp 65010
 router-id 192.168.4.4
 peer 10.1.4.1 as-number 65010
 peer 10.1.6.2 as-number 65010
 #
 ipv4-family unicast
  peer 10.1.4.1 enable
  peer 10.1.6.2 enable
#
return

The configuration files of the other switches are similar to the configuration file of SwitchD, and are not provided here.

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Updated: 2021-09-17

Document ID: EDOC1100075354

Views: 415423

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