Example for Configuring E-PW APS for Dynamic SS-PWs
In E-PW APS scenarios, MPLS OAM is used to detect the status of dynamic SS-PWs.
Networking Requirements
This chapter applies only to the NetEngine 8000 F1A.
On the public network show in Figure 1, three PEs belong to the same IGP domain and two dynamic associated bidirectional LSPs are deployed. In addition, CE1 and CE2 need to reliably communicate through the three PEs on the public network.
To meet this requirement, configure E-PW APS for dynamic PWs. Because the three PEs belong to the same IGP domain, the PWs can be SS-PWs.
Configuration Roadmap
The configuration roadmap is as follows:
Configure interface IP addresses and a routing protocol.
Configure MPLS and public network tunnels.
In this example, dynamic associated bidirectional LSPs are used between PE1 and PE2, between PE1 and PE3, and between PE2 and PE3. The specific configurations include:
Configure basic MPLS functions and enable MPLS TE, RSVP-TE, and CSPF.
Configure OSPF TE.
Configure dynamic associated bidirectional LSPs.
Configure a PW protection group, which includes:
Configure a primary PW between PE1 and PE2.
Configure a secondary PW between PE1 and PE3.
Configure a bypass PW between PE2 and PE3.
Configure E-PW APS, which includes:
Configure a PW APS instance on PE1.
Configure an E-PW APS instance on PE2 and PE3.
Bind PWs to PW APS instances.
Configure MPLS OAM to detect PW status.
Configure CEs to access the L2VPN through VLANs on the AC side.
Data Preparation
To complete the configuration, you need the following data:
PEs' interface numbers, IP addresses and OSPF process IDs
Each PE's LSR ID, tunnel interface numbers and IP addresses, and tunnel IDs and ingress LSR IDs of reverse RSVP LSPs
Destination IP addresses, VC IDs, and VC types of L2VCs and transmit/receive labels of dynamic PWs
APS instance numbers and the master/slave roles, local numbers, and remote numbers of the E-PW APS instances on PEs (the E-PW APS role is slave for PE2 and master for PE3)
Procedure
- Configure interface IP addresses and a routing protocol.
Configure the IP address and mask for each interface.
In this example, OSPF is used as the IGP for PE1, PE2, and PE3 to communicate at the network layer. The configuration details are not provided here.
- Configure MPLS and public network tunnels.
In this example, dynamic associated bidirectional LSPs are used between PE1, PE2, and PE3.
- Configure a dynamic PW protection group.
- Configure E-PW APS.
- Configure MPLS OAM to detect PW status.
# Configure PE1.
[~PE1] mpls [*PE1-mpls] mpls oam [*PE1-mpls] quit [*PE1] mpls-oam [*PE1-mpls-oam] mpls oam l2vc peer-ip 2.2.2.2 vc-id 1 vc-type vlan type cv [*PE1-mpls-oam] mpls oam l2vc peer-ip 3.3.3.3 vc-id 2 vc-type vlan type cv [*PE1-mpls-oam] mpls oam l2vc enable receive peer-ip 2.2.2.2 vc-id 1 vc-type vlan [*PE1-mpls-oam] mpls oam l2vc enable send peer-ip 2.2.2.2 vc-id 1 vc-type vlan [*PE1-mpls-oam] mpls oam l2vc enable receive peer-ip 3.3.3.3 vc-id 2 vc-type vlan [*PE1-mpls-oam] mpls oam l2vc enable send peer-ip 3.3.3.3 vc-id 2 vc-type vlan [*PE1-mpls-oam] quit [*PE1] commit
# Configure PE2.
[~PE2] mpls [*PE2-mpls] mpls oam [*PE2-mpls] quit [*PE2] mpls-oam [*PE2-mpls-oam] mpls oam l2vc peer-ip 1.1.1.1 vc-id 3 vc-type vlan type cv [*PE2-mpls-oam] mpls oam l2vc peer-ip 3.3.3.3 vc-id 6 vc-type vlan type cv [*PE2-mpls-oam] mpls oam l2vc enable receive peer-ip 1.1.1.1 vc-id 3 vc-type vlan [*PE2-mpls-oam] mpls oam l2vc enable send peer-ip 1.1.1.1 vc-id 3 vc-type vlan [*PE2-mpls-oam] mpls oam l2vc enable receive peer-ip 3.3.3.3 vc-id 6 vc-type vlan [*PE2-mpls-oam] mpls oam l2vc enable send peer-ip 3.3.3.3 vc-id 6 vc-type vlan [*PE2-mpls-oam] quit [*PE2] commit
# Configure PE3.
[~PE3] mpls [*PE3-mpls] mpls oam [*PE3-mpls] quit [*PE3] mpls-oam [*PE3-mpls-oam] mpls oam l2vc peer-ip 1.1.1.1 vc-id 4 vc-type vlan type cv [*PE3-mpls-oam] mpls oam l2vc peer-ip 2.2.2.2 vc-id 5 vc-type vlan type cv [*PE3-mpls-oam] mpls oam l2vc enable receive peer-ip 1.1.1.1 vc-id 4 vc-type vlan [*PE3-mpls-oam] mpls oam l2vc enable send peer-ip 1.1.1.1 vc-id 4 vc-type vlan [*PE3-mpls-oam] mpls oam l2vc enable receive peer-ip 2.2.2.2 vc-id 5 vc-type vlan [*PE3-mpls-oam] mpls oam l2vc enable send peer-ip 2.2.2.2 vc-id 5 vc-type vlan [*PE3-mpls-oam] quit [*PE3] commit
Check MPLS OAM information on PE1.
[~PE1] display mpls oam l2vc all -------------------------------------------------------------------------------- Total Oam Num: 2 Total Start Oam Num: 2 Total Defect Oam Num: 0 -------------------------------------------------------------------------------- No. Peer IP VC Type VC ID Status -------------------------------------------------------------------------------- 1 2.2.2.2 vlan 1 Start/Non-defect 2 3.3.3.3 vlan 2 Start/Non-defect - Configure dual-homing protection on the AC side.
- Verify the configuration.
Ping the IP address of the VLANIF interface on CE2 from CE1.
# Configure CE2.
[~CE2]interface Vlanif 10 [*CE2-Vlanif100/1/0] ip address 10.1.1.2 24 [*CE2-Vlanif100/1/0] quit [*CE2] commit
# Perform the ping operation.
[~CE1] ping 10.1.1.2 PING 10.1.1.2: 56 data bytes, press CTRL_C to break Reply from 10.1.1.2: bytes=56 Sequence=1 ttl=255 time=40 ms Reply from 10.1.1.2: bytes=56 Sequence=2 ttl=255 time=30 ms Reply from 10.1.1.2: bytes=56 Sequence=3 ttl=255 time=40 ms Reply from 10.1.1.2: bytes=56 Sequence=4 ttl=255 time=1 ms Reply from 10.1.1.2: bytes=56 Sequence=5 ttl=255 time=1 ms --- 10.1.1.2 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 1/22/40 ms
Configuration Files
CE1 configuration file
# sysname CE1 # interface GigabitEthernet0/1/0 undo shutdown # interface GigabitEthernet0/1/0.1 vlan-type dot1q 10 ip address 10.1.1.1 255.255.255.0 # return
PE1 configuration file
# sysname PE1 # mpls lsr-id 1.1.1.1 mpls mpls te label advertise non-null mpls rsvp-te mpls oam mpls te cspf # mpls l2vpn # pw-aps 1 # explicit-path 1to2 next hop 10.1.2.2 next hop 2.2.2.2 # explicit-path 1to3 next hop 10.1.3.2 next hop 3.3.3.3 # mpls ldp # mpls ldp remote-peer 2.2.2.2 remote-ip 2.2.2.2 # mpls ldp remote-peer 3.3.3.3 remote-ip 3.3.3.3 # interface GigabitEthernet0/1/0 undo shutdown # interface GigabitEthernet0/1/0.1 vlan-type dot1q 10 mpls l2vc 2.2.2.2 1 tunnel-policy policy1 control-word mpls l2vc 3.3.3.3 2 tunnel-policy policy1 control-word secondary mpls l2vpn pw-aps 1 admin # interface GigabitEthernet0/1/1 undo shutdown ip address 10.1.2.1 255.255.255.0 mpls mpls te mpls te rsvp-te # interface GigabitEthernet0/1/2 undo shutdown ip address 10.1.3.1 255.255.255.0 mpls mpls te mpls te rsvp-te # interface LoopBack0 ip address 1.1.1.1 255.255.255.255 # interface Tunnel10 ip address unnumbered interface LoopBack0 tunnel-protocol mpls te destination 2.2.2.2 mpls te tunnel-id 100 mpls te reverse-lsp protocol rsvp-te ingress-lsr-id 2.2.2.2 tunnel-id 100 mpls te path explicit-path 1to2 mpls te reserved-for-binding # interface Tunnel11 ip address unnumbered interface LoopBack0 tunnel-protocol mpls te destination 3.3.3.3 mpls te tunnel-id 200 mpls te reverse-lsp protocol rsvp-te ingress-lsr-id 3.3.3.3 tunnel-id 200 mpls te path explicit-path 1to3 mpls te reserved-for-binding # ospf 1 area 0.0.0.0 network 10.1.2.0 0.0.0.255 network 1.1.1.1 0.0.0.0 network 10.1.3.0 0.0.0.255 # tunnel-policy policy1 tunnel binding destination 2.2.2.2 te Tunnel10 tunnel binding destination 3.3.3.3 te Tunnel11 # mpls-oam mpls oam l2vc peer-ip 2.2.2.2 vc-id 1 vc-type vlan type cv mpls oam l2vc peer-ip 3.3.3.3 vc-id 2 vc-type vlan type cv mpls oam l2vc enable receive peer-ip 2.2.2.2 vc-id 1 vc-type vlan mpls oam l2vc enable send peer-ip 2.2.2.2 vc-id 1 vc-type vlan mpls oam l2vc enable receive peer-ip 3.3.3.3 vc-id 2 vc-type vlan mpls oam l2vc enable send peer-ip 3.3.3.3 vc-id 2 vc-type vlan # return
PE2 configuration file
# sysname PE2 # lacp e-trunk system-id 00e0-fc00-0000 lacp e-trunk priority 100 # mpls lsr-id 2.2.2.2 mpls mpls te label advertise non-null mpls rsvp-te mpls oam mpls te cspf # mpls l2vpn # pw-aps 2 role slave remote-aps 3 # explicit-path 2to1 next hop 10.1.2.1 next hop 1.1.1.1 # explicit-path 2to3 next hop 10.1.4.2 next hop 3.3.3.3 # mpls ldp # mpls ldp remote-peer 1.1.1.1 remote-ip 1.1.1.1 # mpls ldp remote-peer 3.3.3.3 remote-ip 3.3.3.3 # e-trunk 10 priority 10 peer-address 3.3.3.3 source-address 2.2.2.2 # interface Eth-Trunk10 mode lacp-static e-trunk 10 # interface Eth-Trunk10.1 vlan-type dot1q 10 mpls l2vc 1.1.1.1 1 tunnel-policy policy1 control-word mpls l2vc 3.3.3.3 3 tunnel-policy policy1 control-word bypass mpls l2vpn pw-aps 2 admin # interface GigabitEthernet0/1/0 undo shutdown ip address 10.1.2.2 255.255.255.0 mpls mpls te mpls te rsvp-te # interface GigabitEthernet0/1/1 undo shutdown ip address 10.1.4.1 255.255.255.0 mpls mpls te mpls te rsvp-te # interface GigabitEthernet0/1/2 undo shutdown eth-trunk 10 # interface LoopBack0 ip address 2.2.2.2 255.255.255.255 # interface Tunnel10 ip address unnumbered interface LoopBack0 tunnel-protocol mpls te destination 1.1.1.1 mpls te tunnel-id 100 mpls te reverse-lsp protocol rsvp-te ingress-lsr-id 1.1.1.1 tunnel-id 100 mpls te path explicit-path 2to1 mpls te reserved-for-binding # interface Tunnel12 ip address unnumbered interface LoopBack0 tunnel-protocol mpls te destination 3.3.3.3 mpls te tunnel-id 300 mpls te reverse-lsp protocol rsvp-te ingress-lsr-id 3.3.3.3 tunnel-id 300 mpls te reserved-for-binding # ospf 1 area 0.0.0.0 network 2.2.2.2 0.0.0.0 network 10.1.4.0 0.0.0.255 network 10.1.2.0 0.0.0.255 # tunnel-policy policy1 tunnel binding destination 1.1.1.1 te Tunnel10 tunnel binding destination 3.3.3.3 te Tunnel12 # mpls-oam mpls oam l2vc peer-ip 1.1.1.1 vc-id 1 vc-type vlan type cv mpls oam l2vc peer-ip 3.3.3.3 vc-id 3 vc-type vlan type cv mpls oam l2vc enable receive peer-ip 1.1.1.1 vc-id 1 vc-type vlan mpls oam l2vc enable send peer-ip 1.1.1.1 vc-id 1 vc-type vlan mpls oam l2vc enable receive peer-ip 3.3.3.3 vc-id 3 vc-type vlan mpls oam l2vc enable send peer-ip 3.3.3.3 vc-id 3 vc-type vlan # return
PE3 configuration file
# sysname PE3 # lacp e-trunk system-id 00e0-fc00-0000 lacp e-trunk priority 100 # mpls lsr-id 3.3.3.3 mpls mpls te label advertise non-null mpls rsvp-te mpls oam mpls te cspf # mpls l2vpn # pw-aps 3 role master remote-aps 2 # explicit-path 3to1 next hop 10.1.3.1 next hop 1.1.1.1 # explicit-path 3to2 next hop 10.1.4.1 next hop 2.2.2.2 # mpls ldp # mpls ldp remote-peer 1.1.1.1 remote-ip 1.1.1.1 # mpls ldp remote-peer 2.2.2.2 remote-ip 2.2.2.2 # e-trunk 10 priority 20 peer-address 2.2.2.2 source-address 3.3.3.3 # interface Eth-Trunk10 mode lacp-static e-trunk 10 # interface Eth-Trunk10.1 vlan-type dot1q 10 mpls l2vc 1.1.1.1 2 tunnel-policy policy1 control-word mpls l2vc 2.2.2.2 3 tunnel-policy policy1 control-word bypass mpls l2vpn pw-aps 3 admin # interface GigabitEthernet0/1/0 undo shutdown ip address 10.1.3.2 255.255.255.0 mpls mpls te mpls te rsvp-te # interface GigabitEthernet0/1/1 undo shutdown ip address 10.1.4.2 255.255.255.0 mpls mpls te mpls te rsvp-te # interface GigabitEthernet0/1/2 undo shutdown eth-trunk 10 # interface LoopBack0 ip address 3.3.3.3 255.255.255.255 # interface Tunnel11 ip address unnumbered interface LoopBack0 tunnel-protocol mpls te destination 1.1.1.1 mpls te tunnel-id 200 mpls te reverse-lsp protocol rsvp-te ingress-lsr-id 1.1.1.1 tunnel-id 200 mpls te path explicit-path 3to1 mpls te reserved-for-binding # interface Tunnel12 ip address unnumbered interface LoopBack0 tunnel-protocol mpls te destination 2.2.2.2 mpls te tunnel-id 300 mpls te reverse-lsp protocol rsvp-te ingress-lsr-id 2.2.2.2 tunnel-id 300 mpls te path explicit-path 3to2 mpls te reserved-for-binding # ospf 1 area 0.0.0.0 network 3.3.3.3 0.0.0.0 network 10.1.3.0 0.0.0.255 network 10.1.4.0 0.0.0.255 # static-cr-lsp egress 1to2 incoming-interface GigabitEthernet0/1/1 in-label 20 # tunnel-policy policy1 tunnel binding destination 1.1.1.1 te Tunnel11 tunnel binding destination 2.2.2.2 te Tunnel12 # mpls-oam mpls oam l2vc peer-ip 1.1.1.1 vc-id 2 vc-type vlan type cv mpls oam l2vc peer-ip 2.2.2.2 vc-id 3 vc-type vlan type cv mpls oam l2vc enable receive peer-ip 2.2.2.2 vc-id 3 vc-type vlan mpls oam l2vc enable send peer-ip 2.2.2.2 vc-id 3 vc-type vlan mpls oam l2vc enable receive peer-ip 1.1.1.1 vc-id 2 vc-type vlan mpls oam l2vc enable send peer-ip 1.1.1.1 vc-id 2 vc-type vlan # return
CE2 configuration file
# sysname CE2 # interface Vlanif100/1/0 ip address 10.1.1.2 255.255.255.0 # interface Eth-Trunk10 portswitch port trunk allow-pass vlan 10 mode lacp-static trunkport gigabitethernet 0/1/0 to 0/1/1 # interface GigabitEthernet0/1/0 undo shutdown eth-trunk 10 # interface GigabitEthernet0/1/1 undo shutdown eth-trunk 10 # return