在ASR1k系列路由器上配置BDI上的PPPoE
简介
本文档介绍如何使用网桥域接口(BDI)和vlan-range配置以太网点对点协议(PPPoE)服务器。
先决条件
要求
Cisco 建议您了解以下主题：
- 端到端第1层连接正常
- PPP和PPPoE的基础知识已经广为人知
使用的组件
本文档中的信息基于以下软件和硬件版本：
- HOST-1 - CISCO887G
- HOST-2 - CISCO887
- 交换机 — WS-C3560-24TS-S
- PPPoE服务器 — ASR1001-X
本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始（默认）配置。如果您使用的是真实网络，请确保您已经了解所有命令的潜在影响。
配置
主机1
!
interface FastEthernet0
switchport access vlan 100
no ip address
end
!
interface Vlan100
no ip address
pppoe enable group global
pppoe-client dial-pool-number 1
end
!
interface Dialer1
ip address negotiated
encapsulation ppp
dialer pool 1
ppp chap hostname dsl
ppp chap password 0 dsl
end
!
主机2
!
interface FastEthernet0
switchport access vlan 200
no ip address
end
!
!
interface Vlan200
no ip address
pppoe enable group global
pppoe-client dial-pool-number 1
end
!
!
interface Dialer1
ip address negotiated
encapsulation ppp
dialer pool 1
ppp chap hostname dsl
ppp chap password 0 dsl
end
!
交换机
SWITCH#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay
Device ID Local Intrfce Holdtme Capability Platform Port ID
SERVER Gig 0/1 130 R I ASR1001-X Gig 0/0/0
HOST-1 Fas 0/2 141 R B S I 887G Fas 0
HOST-2 Fas 0/1 167 R B S I 887 Fas 0
!
interface FastEthernet0/2
switchport access vlan 100
end
!
interface FastEthernet0/1
switchport access vlan 200
end
!
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 100,200
switchport mode trunk
end
!
PPPoE服务器
!
username dsl password 0 dsl
!
bba-group pppoe global
virtual-template 1
!
interface GigabitEthernet0/0/0
no ip address
negotiation auto
cdp enable
service instance 100 ethernet
encapsulation dot1q 100 etype pppoe-all
rewrite ingress tag pop 1 symmetric
bridge-domain 100
!
service instance 200 ethernet
encapsulation dot1q 200 etype pppoe-all
rewrite ingress tag pop 1 symmetric
bridge-domain 200
!
!
interface Virtual-Template1
ip unnumbered Loopback0
peer default ip address pool POOL
ppp authentication chap
!
interface BDI100
no ip address
pppoe enable group global
!
interface BDI200
no ip address
pppoe enable group global
!
interface Loopback0
ip address 192.168.10.1 255.255.255.255
end
!
ip local pool POOL 192.168.1.1 192.168.1.100
!
或者，您可以配置vlan-range，如图所示：
!
interface GigabitEthernet0/0/0
no ip address
negotiation auto
service instance 100 ethernet
encapsulation default
bridge-domain 1
!
end
!
interface BDI1
no ip address
vlan-range dot1q 1 4094
pppoe enable group global
!
end
网络图
验证
使用本部分可确认配置能否正常运行。
在HOST-1上
HOST-1#show ip interface brief | exclude un
Interface IP-Address OK? Method Status Protocol
Dialer1 192.168.1.4 YES IPCP up up
HOST-1#show caller ip
Line User IP Address Local Number Remote Number <->
Vi2 SERVER 192.168.10.1 - <unknown phone in
HOST-1#ping 192.168.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
HOST-1#show ppp interface virtual-Access 2
PPP Serial Context Info
-------------------
Interface : Vi2
PPP Serial Handle: 0x1F000003
PPP Handle : 0xB2000003
SSS Handle : 0x8000004
AAA ID : 24
Access IE : 0xA7000003
SHDB Handle : 0x0
State : Up
Last State : Binding
Last Event : LocalTerm
PPP Session Info
----------------
Interface : Vi2
PPP ID : 0xB2000003
Phase : UP
Stage : Local Termination
Peer Name : SERVER
Peer Address : 192.168.10.1
Control Protocols: LCP[Open] IPCP[Open] CDPCP[Stopped]
Session ID : 3
AAA Unique ID : 24
SSS Manager ID : 0x8000004
SIP ID : 0x1F000003
PPP_IN_USE : 0x11
Vi2 LCP: [Open]
Our Negotiated Options
Vi2 LCP: MagicNumber 0x7735647E (0x05067735647E)
Peer's Negotiated Options
Vi2 LCP: MRU 1500 (0x010405DC)
Vi2 LCP: AuthProto CHAP (0x0305C22305)
Vi2 LCP: MagicNumber 0xA7A011AC (0x0506A7A011AC)
Vi2 IPCP: [Open]
Our Negotiated Options
Vi2 IPCP: Address 192.168.1.5 (0x0306C0A80105)
Peer's Negotiated Options
Vi2 IPCP: Address 192.168.10.1 (0x0306C0A80A01)
在HOST-2上
HOST-2#show ip interface brief | exclude un
Interface IP-Address OK? Method Status Protocol
Dialer1 192.168.1.6 YES IPCP up up
HOST-2#show caller ip
Line User IP Address Local Number Remote Number <->
Vi2 SERVER 192.168.10.1 - <unknown phone in
HOST-2#ping 192.168.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
HOST-2#show ppp interface virtual-Access 2
PPP Serial Context Info
-------------------
Interface : Vi2
PPP Serial Handle: 0x7B00000A
PPP Handle : 0xA000000A
SSS Handle : 0x4C00000B
AAA ID : 68
Access IE : 0x1D00000A
SHDB Handle : 0x0
State : Up
Last State : Binding
Last Event : LocalTerm
PPP Session Info
----------------
Interface : Vi2
PPP ID : 0xA000000A
Phase : UP
Stage : Local Termination
Peer Name : SERVER
Peer Address : 192.168.10.1
Control Protocols: LCP[Open] IPCP[Open] CDPCP[Stopped]
Session ID : 10
AAA Unique ID : 68
SSS Manager ID : 0x4C00000B
SIP ID : 0x7B00000A
PPP_IN_USE : 0x11
Vi2 LCP: [Open]
Our Negotiated Options
Vi2 LCP: MagicNumber 0x421AC8AB (0x0506421AC8AB)
Peer's Negotiated Options
Vi2 LCP: MRU 1500 (0x010405DC)
Vi2 LCP: AuthProto CHAP (0x0305C22305)
Vi2 LCP: MagicNumber 0xA7A0942C (0x0506A7A0942C)
Vi2 IPCP: [Open]
Our Negotiated Options
Vi2 IPCP: Address 192.168.1.6 (0x0306C0A80106)
Peer's Negotiated Options
Vi2 IPCP: Address 192.168.10.1 (0x0306C0A80A01)
在交换机上
SWITCH#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/4, Fa0/5, Fa0/6, Fa0/7
Fa0/8, Fa0/9, Fa0/10, Fa0/11
Fa0/12, Fa0/13, Fa0/14, Fa0/15
Fa0/16, Fa0/17, Fa0/18, Fa0/19
Fa0/20, Fa0/21, Fa0/22, Fa0/23
Fa0/24, Gi0/2
11 VLAN0011 active
12 VLAN0012 active
13 VLAN0013 active
100 VLAN0100 active Fa0/2
200 VLAN0200 active Fa0/1
SWITCH#Show interface trunk
Port Mode Encapsulation Status Native vlan
Gi0/1 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi0/1 100,200
Port Vlans allowed and active in management domain
Gi0/1 100,200
Port Vlans in spanning tree forwarding state and not pruned
Gi0/1 100,200
在PPPoE服务器上
SERVER#show caller ip
Line User IP Address Local Number Remote Number <->
Vi2.1 dsl 192.168.1.6 - - in
Vi2.2 dsl 192.168.1.5 - - in
SERVER#show ip local pool POOL
Pool Begin End Free In use
POOL 192.168.1.1 192.168.1.100 98 2
Available addresses:
192.168.1.7
192.168.1.8
192.168.1.9
.....
.....
使用“vlan-range”时，请注意“Port”中的更改：
SERVER#show caller ip
Line User IP Address Local Number Remote Number <->
Vi2.1 dsl 192.168.1.7 - - in
Vi2.2 dsl 192.168.1.8 - - in
故障排除
本部分提供了可用于对配置进行故障排除的信息。
这些调试有助于排除PPP/PPPoE故障。
- debug pppoe events
- debug pppoe errors
- debug ppp negotiation
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