Example for Configuring an E2E SR-MPLS TE Tunnel (Explicit Path Used)
An inter-AS E2E SR-MPLS TE tunnel can be configured to provide a secure data channel for services, for example, inter-AS VPN services.
Networking Requirements
On the network shown in Figure 1, PE1 and ASBR1 reside in AS 100, PE2 and ASBR2 reside in AS 200, and ASBR1 and ASBR2 are directly connected through two physical links. A bidirectional E2E tunnel needs to be established between PE1 and PE2. SR is used to for path generation and data forwarding. In the PE1-to-PE2 direction, PE1 and PE2 are the ingress and egress of the path, respectively. In the PE2-to-PE1 direction, PE2 and PE1 are the ingress and egress of the path, respectively.
Configuration Roadmap
The configuration roadmap is as follows:
Configure intra-AS SR-MPLS TE tunnels in AS 100 and AS 200. Set binding SIDs for the SR-MPLS TE tunnels.
Configure an EBGP peer relationship between ASBR1 and ASBR2, enable BGP EPE and BGP-LS, and enable the devices to generate BGP peer SIDs.
Create an E2E SR-MPLS TE tunnel interface on PE1 and PE2. Specify the IP address, tunneling protocol, and destination address of each tunnel. Explicit paths are used for path calculation.
Data Preparation
To complete the configuration, you need the following data:
IP addresses of interfaces as shown in Figure 1
IS-IS process ID (1), IS-IS level (Level-2), and IS-IS system IDs (10.0000.0000.0001.00, 10.0000.0000.0002.00, 10.0000.0000.0003.00, and 10.0000.0000.0004.00)
AS number (100) of PE1 and ASBR1 and that (200) of PE2 and ASBR2
SR-MPLS TE tunnel interface names in AS 100 (Tunnel1) and AS 200 (Tunnel2); tunnel interface name of the PE1-to-PE2 E2E SR-MPLS TE tunnel (Tunnel3) and that of the PE2-to-PE1 E2E SR-MPLS TE tunnel (Tunnel3)
Procedure
- Assign an IP address and a mask to each interface.
# Configure PE1.
<HUAWEI> system-view [~HUAWEI] sysname PE1 [*HUAWEI] commit [~PE1] interface loopback 1 [*PE1-LoopBack1] ip address 1.1.1.1 32 [*PE1-LoopBack1] quit [*PE1] interface gigabitethernet0/1/0 [*PE1-GigabitEthernet0/1/0] ip address 10.0.1.1 24 [*PE1-GigabitEthernet0/1/0] quit [*PE1] commit
# Configure ASBR1.
<HUAWEI> system-view [~HUAWEI] sysname ASBR1 [*HUAWEI] commit [~ASBR1] interface loopback 1 [*ASBR1-LoopBack1] ip address 2.2.2.2 32 [*ASBR1-LoopBack1] quit [*ASBR1] interface gigabitethernet0/1/0 [*ASBR1-GigabitEthernet0/1/0] ip address 10.1.1.1 24 [*ASBR1-GigabitEthernet0/1/0] quit [*ASBR1] interface gigabitethernet0/1/8 [*ASBR1-GigabitEthernet0/1/8] ip address 10.2.1.1 24 [*ASBR1-GigabitEthernet0/1/8] quit [*ASBR1] interface gigabitethernet0/1/16 [*ASBR1-GigabitEthernet0/1/16] ip address 10.0.1.2 24 [*ASBR1-GigabitEthernet0/1/16] quit [*ASBR1] commit
# Configure ASBR2.
<HUAWEI> system-view [~HUAWEI] sysname ASBR2 [*HUAWEI] commit [~ASBR2] interface loopback 1 [*ASBR2-LoopBack1] ip address 3.3.3.3 32 [*ASBR2-LoopBack1] quit [*ASBR2] interface gigabitethernet0/1/0 [*ASBR2-GigabitEthernet0/1/0] ip address 10.1.1.2 24 [*ASBR2-GigabitEthernet0/1/0] quit [*ASBR2] interface gigabitethernet0/1/8 [*ASBR2-GigabitEthernet0/1/8] ip address 10.2.1.2 24 [*ASBR2-GigabitEthernet0/1/8] quit [*ASBR2] interface gigabitethernet0/1/16 [*ASBR2-GigabitEthernet0/1/16] ip address 10.9.1.1 24 [*ASBR2-GigabitEthernet0/1/16] quit [*ASBR2] commit
# Configure PE2.
<HUAWEI> system-view [~HUAWEI] sysname PE2 [*HUAWEI] commit [~PE2] interface loopback 1 [*PE2-LoopBack1] ip address 4.4.4.4 32 [*PE2-LoopBack1] quit [*PE2] interface gigabitethernet0/1/0 [*PE2-GigabitEthernet0/1/0] ip address 10.9.1.2 24 [*PE2-GigabitEthernet0/1/0] quit [*PE2] commit
- Configure an intra-AS SR-MPLS TE tunnel in AS 100.
# Configure PE1.
[~PE1] mpls lsr-id 1.1.1.1 [*PE1] mpls [*PE1-mpls] mpls te [*PE1-mpls] quit [*PE1] segment-routing [*PE1-segment-routing] quit [*PE1] isis 1 [*PE1-isis-1] is-level level-2 [*PE1-isis-1] network-entity 10.0000.0000.0001.00 [*PE1-isis-1] cost-style wide [*PE1-isis-1] traffic-eng level-2 [*PE1-isis-1] segment-routing mpls [*PE1-isis-1] quit [*PE1] interface loopback 1 [*PE1-LoopBack1] isis enable 1 [*PE1-LoopBack1] isis prefix-sid absolute 16100 [*PE1-LoopBack1] quit [*PE1] interface gigabitethernet0/1/0 [*PE1-GigabitEthernet0/1/0] isis enable 1 [*PE1-GigabitEthernet0/1/0] mpls [*PE1-GigabitEthernet0/1/0] mpls te [*PE1-GigabitEthernet0/1/0] quit [*PE1] explicit-path path2asbr1 [*PE1-explicit-path-path2asbr1] next sid label 330102 type adjacency [*PE1-explicit-path-path2asbr1] quit [*PE1] interface tunnel1 [*PE1-Tunnel1] ip address unnumbered interface loopback 1 [*PE1-Tunnel1] tunnel-protocol mpls te [*PE1-Tunnel1] destination 2.2.2.2 [*PE1-Tunnel1] mpls te tunnel-id 1 [*PE1-Tunnel1] mpls te signal-protocol segment-routing [*PE1-Tunnel1] mpls te path explicit-path path2asbr1 [*PE1-Tunnel1] commit [~PE1-Tunnel1] quit
In the preceding steps, the next sid label command uses the adjacency label from PE1 to ASBR1, which is dynamically generated by IS-IS. Before the configuration, you can run the display segment-routing adjacency mpls forwarding command to query the label value. For example:
[~PE1] display segment-routing adjacency mpls forwarding Segment Routing Adjacency MPLS Forwarding Information Label Interface NextHop Type MPLSMtu Mtu ----------------------------------------------------------------------------- 330102 GE0/1/0 10.0.1.2 ISIS-V4 --- 1500 Total information(s): 1
# Configure ASBR1.
[~ASBR1] mpls lsr-id 2.2.2.2 [*ASBR1] mpls [*ASBR1-mpls] mpls te [*ASBR1-mpls] quit [*ASBR1] segment-routing [*ASBR1-segment-routing] quit [*ASBR1] isis 1 [*ASBR1-isis-1] is-level level-2 [*ASBR1-isis-1] network-entity 10.0000.0000.0002.00 [*ASBR1-isis-1] cost-style wide [*ASBR1-isis-1] traffic-eng level-2 [*ASBR1-isis-1] segment-routing mpls [*ASBR1-isis-1] quit [*ASBR1] interface loopback 1 [*ASBR1-LoopBack1] isis enable 1 [*ASBR1-LoopBack1] isis prefix-sid absolute 16200 [*ASBR1-LoopBack1] quit [*ASBR1] interface gigabitethernet0/1/16 [*ASBR1-GigabitEthernet0/1/16] isis enable 1 [*ASBR1-GigabitEthernet0/1/16] mpls [*ASBR1-GigabitEthernet0/1/16] mpls te [*ASBR1-GigabitEthernet0/1/16] quit [*ASBR1] explicit-path path2pe1 [*ASBR1-explicit-path-path2pe1] next sid label 330201 type adjacency [*ASBR1-explicit-path-path2pe1] quit [*ASBR1] interface tunnel1 [*ASBR1-Tunnel1] ip address unnumbered interface loopback 1 [*ASBR1-Tunnel1] tunnel-protocol mpls te [*ASBR1-Tunnel1] destination 1.1.1.1 [*ASBR1-Tunnel1] mpls te tunnel-id 1 [*ASBR1-Tunnel1] mpls te signal-protocol segment-routing [*ASBR1-Tunnel1] mpls te path explicit-path path2pe1 [*ASBR1-Tunnel1] commit [~ASBR1-Tunnel1] quit
In the preceding step, an ASBR1-to-PE1 adjacency label is used in the next sid label command and is dynamically generated using IS-IS. To obtain the label value, run the display segment-routing adjacency mpls forwarding command. For example:
[~ASBR1] display segment-routing adjacency mpls forwarding Segment Routing Adjacency MPLS Forwarding Information Label Interface NextHop Type MPLSMtu Mtu ----------------------------------------------------------------------------- 330201 GE0/1/16 10.0.1.1 ISIS-V4 --- 1500 Total information(s): 1
- Configure an intra-AS SR-MPLS TE tunnel in AS 200.
# Configure ASBR2.
[~ASBR2] mpls lsr-id 3.3.3.3 [*ASBR2] mpls [*ASBR2-mpls] mpls te [*ASBR2-mpls] quit [*ASBR2] segment-routing [*ASBR2-segment-routing] quit [*ASBR2] isis 1 [*ASBR2-isis-1] is-level level-2 [*ASBR2-isis-1] network-entity 10.0000.0000.0003.00 [*ASBR2-isis-1] cost-style wide [*ASBR2-isis-1] traffic-eng level-2 [*ASBR2-isis-1] segment-routing mpls [*ASBR2-isis-1] quit [*ASBR2] interface loopback 1 [*ASBR2-LoopBack1] isis enable 1 [*ASBR2-LoopBack1] isis prefix-sid absolute 16300 [*ASBR2-LoopBack1] quit [*ASBR2] interface gigabitethernet0/1/16 [*ASBR2-GigabitEthernet0/1/16] isis enable 1 [*ASBR2-GigabitEthernet0/1/16] mpls [*ASBR2-GigabitEthernet0/1/16] mpls te [*ASBR2-GigabitEthernet0/1/16] quit [*ASBR2] explicit-path path2pe2 [*ASBR2-explicit-path-path2pe2] next sid label 330304 type adjacency [*ASBR2-explicit-path-path2pe2] quit [*ASBR2] interface tunnel2 [*ASBR2-Tunnel2] ip address unnumbered interface loopback 1 [*ASBR2-Tunnel2] tunnel-protocol mpls te [*ASBR2-Tunnel2] destination 4.4.4.4 [*ASBR2-Tunnel2] mpls te tunnel-id 1 [*ASBR2-Tunnel2] mpls te signal-protocol segment-routing [*ASBR2-Tunnel2] mpls te path explicit-path path2pe2 [*ASBR2-Tunnel2] commit [~ASBR2-Tunnel2] quit
In the preceding step, an ASBR2-to-PE2 adjacency label is used in the next sid label command and is dynamically generated using IS-IS. To obtain the label value, run the display segment-routing adjacency mpls forwarding command. For example:
[~ASBR2] display segment-routing adjacency mpls forwarding Segment Routing Adjacency MPLS Forwarding Information Label Interface NextHop Type MPLSMtu Mtu ----------------------------------------------------------------------------- 330304 GE0/1/16 10.9.1.2 ISIS-V4 --- 1500 Total information(s): 1
# Configure PE2.
[~PE2] mpls lsr-id 4.4.4.4 [*PE2] mpls [*PE2-mpls] mpls te [*PE2-mpls] quit [*PE2] segment-routing [*PE2-segment-routing] quit [*PE2] isis 1 [*PE2-isis-1] is-level level-2 [*PE2-isis-1] network-entity 10.0000.0000.0001.00 [*PE2-isis-1] cost-style wide [*PE2-isis-1] traffic-eng level-2 [*PE2-isis-1] segment-routing mpls [*PE2-isis-1] quit [*PE2] interface loopback 1 [*PE2-LoopBack1] isis enable 1 [*PE2-LoopBack1] isis prefix-sid absolute 16400 [*PE2-LoopBack1] quit [*PE2] interface gigabitethernet0/1/0 [*PE2-GigabitEthernet0/1/0] isis enable 1 [*PE2-GigabitEthernet0/1/0] mpls [*PE2-GigabitEthernet0/1/0] mpls te [*PE2-GigabitEthernet0/1/0] quit [*PE2] explicit-path path2asbr2 [*PE2-explicit-path-path2asbr2] next sid label 330403 type adjacency [*PE2-explicit-path-path2asbr2] quit [*PE2] interface tunnel2 [*PE2-Tunnel2] ip address unnumbered interface loopback 1 [*PE2-Tunnel2] tunnel-protocol mpls te [*PE2-Tunnel2] destination 3.3.3.3 [*PE2-Tunnel2] mpls te tunnel-id 1 [*PE2-Tunnel2] mpls te signal-protocol segment-routing [*PE2-Tunnel2] mpls te path explicit-path path2asbr2 [*PE2-Tunnel2] commit [~PE2-Tunnel2] quit
In the preceding step, a PE2-to-ASBR2 adjacency label is used in the next sid label command and is dynamically generated using IS-IS. To obtain the label value, run the display segment-routing adjacency mpls forwarding command. For example:
[~PE2] display segment-routing adjacency mpls forwarding Segment Routing Adjacency MPLS Forwarding Information Label Interface NextHop Type MPLSMtu Mtu ----------------------------------------------------------------------------- 330403 GE0/1/0 10.9.1.1 ISIS-V4 --- 1500 Total information(s): 1
- Configure the MPLS TE capability on ASBRs.
# Configure ASBR1.
[~ASBR1] interface gigabitethernet0/1/0 [~ASBR1-GigabitEthernet0/1/0] mpls [*ASBR1-GigabitEthernet0/1/0] mpls te [*ASBR1-GigabitEthernet0/1/0] quit [*ASBR1] interface gigabitethernet0/1/8 [*ASBR1-GigabitEthernet0/1/8] mpls [*ASBR1-GigabitEthernet0/1/8] mpls te [*ASBR1-GigabitEthernet0/1/8] quit [*ASBR1] commit
# Configure ASBR2.
[~ASBR2] interface gigabitethernet0/1/0 [~ASBR2-GigabitEthernet0/1/0] mpls [*ASBR2-GigabitEthernet0/1/0] mpls te [*ASBR2-GigabitEthernet0/1/0] quit [*ASBR2] interface gigabitethernet0/1/8 [*ASBR2-GigabitEthernet0/1/8] mpls [*ASBR2-GigabitEthernet0/1/8] mpls te [*ASBR2-GigabitEthernet0/1/8] quit [*ASBR2] commit
- Establish an EBGP peer relationship between ASBRs and enable BGP EPE and BGP-LS.
In this example, a loopback interface is used to establish a multi-hop EBGP peer relationship. Before the configuration, ensure that the loopback interfaces of ASBR1 and ASBR2 are routable to each other.
BGP EPE supports only EBGP peer relationships. Multi-hop EBGP peers must be directly connected using physical links. If intermediate nodes exist, no BGP peer SID is set on them, which causes forwarding failures.
# Configure ASBR1.
[~ASBR1] ip route-static 3.3.3.3 32 gigabitethernet0/1/0 10.1.1.2 description asbr1toasbr2 [*ASBR1] ip route-static 3.3.3.3 32 gigabitethernet0/1/8 10.2.1.2 description asbr1toasbr2 [*ASBR1] bgp 100 [*ASBR1-bgp] peer 3.3.3.3 as-number 200 [*ASBR1-bgp] peer 3.3.3.3 connect-interface loopback 1 [*ASBR1-bgp] peer 3.3.3.3 ebgp-max-hop 2 [*ASBR1-bgp] peer 3.3.3.3 egress-engineering [*ASBR1-bgp] link-state-family unicast [*ASBR1-bgp-af-ls] quit [*ASBR1-bgp] ipv4-family unicast [*ASBR1-bgp-af-ipv4] network 2.2.2.2 32 [*ASBR1-bgp-af-ipv4] network 10.1.1.0 24 [*ASBR1-bgp-af-ipv4] network 10.2.1.0 24 [*ASBR1-bgp-af-ipv4] import-route isis 1 [*ASBR1-bgp-af-ipv4] commit [~ASBR1-bgp-af-ipv4] quit [~ASBR1-bgp] quit
# Configure ASBR2.
[~ASBR2] ip route-static 2.2.2.2 32 gigabitethernet0/1/0 10.1.1.1 description asbr2toasbr1 [*ASBR2] ip route-static 2.2.2.2 32 gigabitethernet0/1/8 10.2.1.1 description asbr2toasbr1 [*ASBR2] bgp 200 [*ASBR2-bgp] peer 2.2.2.2 as-number 100 [*ASBR2-bgp] peer 2.2.2.2 connect-interface loopback 1 [*ASBR2-bgp] peer 2.2.2.2 ebgp-max-hop 2 [*ASBR2-bgp] peer 2.2.2.2 egress-engineering [*ASBR1-bgp] link-state-family unicast [*ASBR1-bgp-af-ls] quit [*ASBR2-bgp] ipv4-family unicast [*ASBR2-bgp-af-ipv4] network 3.3.3.3 32 [*ASBR2-bgp-af-ipv4] network 10.1.1.0 24 [*ASBR2-bgp-af-ipv4] network 10.2.1.0 24 [*ASBR2-bgp-af-ipv4] import-route isis 1 [*ASBR2-bgp-af-ipv4] commit [~ASBR2-bgp-af-ipv4] quit [~ASBR2-bgp] quit
After the configuration, run the display bgp egress-engineering command to check BGP EPE information. For example:
[~ASBR1] display bgp egress-engineering Peer Node : 3.3.3.3 Peer Adj Num : 2 Local ASN : 100 Remote ASN : 200 Local Router Id : 2.2.2.2 Remote Router Id : 3.3.3.3 Local Interface Address : 2.2.2.2 Remote Interface Address : 3.3.3.3 SID Label : 32768 Peer Set SID Label : -- Nexthop : 10.1.1.2 Out Interface : GigabitEthernet0/1/0 Nexthop : 10.2.1.2 Out Interface : GigabitEthernet0/1/8 Peer Adj : 10.1.1.2 Local ASN : 100 Remote ASN : 200 Local Router Id : 2.2.2.2 Remote Router Id : 3.3.3.3 Interface Identifier : 6 Local Interface Address : 10.1.1.1 Remote Interface Address : 10.1.1.2 SID Label : 32770 Nexthop : 10.1.1.2 Out Interface : GigabitEthernet0/1/0 Peer Adj : 10.2.1.2 Local ASN : 100 Remote ASN : 200 Local Router Id : 2.2.2.2 Remote Router Id : 3.3.3.3 Interface Identifier : 7 Local Interface Address : 10.2.1.1 Remote Interface Address : 10.2.1.2 SID Label : 32769 Nexthop : 10.2.1.2 Out Interface : GigabitEthernet0/1/8 [~ASBR2] display bgp egress-engineering Peer Node : 2.2.2.2 Peer Adj Num : 2 Local ASN : 200 Remote ASN : 100 Local Router Id : 3.3.3.3 Remote Router Id : 2.2.2.2 Local Interface Address : 3.3.3.3 Remote Interface Address : 2.2.2.2 SID Label : 31768 Peer Set SID Label : -- Nexthop : 10.1.1.1 Out Interface : GigabitEthernet0/1/0 Nexthop : 10.2.1.1 Out Interface : GigabitEthernet0/1/8 Peer Adj : 10.1.1.1 Local ASN : 200 Remote ASN : 100 Local Router Id : 3.3.3.3 Remote Router Id : 2.2.2.2 Interface Identifier : 6 Local Interface Address : 10.1.1.2 Remote Interface Address : 10.1.1.1 SID Label : 31770 Nexthop : 10.1.1.1 Out Interface : GigabitEthernet0/1/0 Peer Adj : 10.2.1.1 Local ASN : 200 Remote ASN : 100 Local Router Id : 3.3.3.3 Remote Router Id : 2.2.2.2 Interface Identifier : 7 Local Interface Address : 10.2.1.2 Remote Interface Address : 10.2.1.1 SID Label : 31769 Nexthop : 10.2.1.1 Out Interface : GigabitEthernet0/1/8
- Set binding SIDs for the SR-MPLS TE tunnels within AS domains.
In the direction from PE1 to PE2:
# Configure PE1.
[~PE1] interface tunnel1 [*PE1-Tunnel1] mpls te binding-sid label 1000 [*PE1-Tunnel1] commit [~PE1-Tunnel1] quit
# Configure ASBR2.
[~ASBR2] interface tunnel2 [*ASBR2-Tunnel2] mpls te binding-sid label 2000 [*ASBR2-Tunnel2] commit [~ASBR2-Tunnel2] quit
In the direction from PE2 to PE1:
# Configure PE2.
[~PE2] interface tunnel2 [*PE2-Tunnel2] mpls te binding-sid label 3000 [*PE2-Tunnel2] commit [~PE2-Tunnel2] quit
# Configure ASBR1.
[~ASBR1] interface tunnel1 [*ASBR1-Tunnel1] mpls te binding-sid label 4000 [*ASBR1-Tunnel1] commit [~ASBR1-Tunnel1] quit
- Configure a bidirectional E2E SR-MPLS TE tunnel between PE1 and PE2.
In the direction from PE1 to PE2:
# Configure PE1. There are multiple links between the ASBRs. You can select any of them. In this example, the link ASBR1 (GigabitEthernet 0/1/0) -> ASBR2 (GigabitEthernet 0/1/0) is selected.
[~PE1] explicit-path path2pe2 [*PE1-explicit-path-path2pe2] next sid label 1000 type binding-sid [*PE1-explicit-path-path2pe2] next sid label 32770 type adjacency [*PE1-explicit-path-path2pe2] next sid label 2000 type binding-sid [*PE1-explicit-path-path2pe2] quit [*PE1] interface tunnel3 [*PE1-Tunnel3] ip address unnumbered interface loopback 1 [*PE1-Tunnel3] tunnel-protocol mpls te [*PE1-Tunnel3] destination 4.4.4.4 [*PE1-Tunnel3] mpls te tunnel-id 100 [*PE1-Tunnel3] mpls te signal-protocol segment-routing [*PE1-Tunnel3] mpls te path explicit-path path2pe2 [*PE1-Tunnel3] commit [~PE1-Tunnel3] quit
In the direction from PE2 to PE1:
# Configure PE2. There are multiple links between the ASBRs. You can select any of them. In this example, the link ASBR2 (GigabitEthernet 0/1/0) -> ASBR1 (GigabitEthernet 0/1/0) is selected.
[~PE2] explicit-path path2pe1 [*PE2-explicit-path-path2pe1] next sid label 3000 type binding-sid [*PE2-explicit-path-path2pe1] next sid label 31770 type adjacency [*PE2-explicit-path-path2pe1] next sid label 4000 type binding-sid [*PE2-explicit-path-path2pe1] quit [*PE2] interface tunnel3 [*PE2-Tunnel3] ip address unnumbered interface loopback 1 [*PE2-Tunnel3] tunnel-protocol mpls te [*PE2-Tunnel3] destination 1.1.1.1 [*PE2-Tunnel3] mpls te tunnel-id 400 [*PE2-Tunnel3] mpls te signal-protocol segment-routing [*PE2-Tunnel3] mpls te path explicit-path path2pe1 [*PE2-Tunnel3] commit [~PE2-Tunnel3] quit
- Verify the configuration.
After completing the configuration, run the display mpls te tunnel-interface tunnel-name command. The command output shows that the E2E SR-MPLS TE tunnel named Tunnel3 is Up. For example:
# Check the status on PE1.[~PE1] display mpls te tunnel-interface tunnel3 Tunnel Name : Tunnel3 Signalled Tunnel Name: - Tunnel State Desc : CR-LSP is Up Tunnel Attributes : Active LSP : Primary LSP Traffic Switch : - Session ID : 100 Ingress LSR ID : 1.1.1.1 Egress LSR ID: 4.4.4.4 Admin State : UP Oper State : UP Signaling Protocol : Segment-Routing FTid : 2 Tie-Breaking Policy : None Metric Type : None Bfd Cap : None Reopt : Disabled Reopt Freq : - Inter-area Reopt : Disabled Auto BW : Disabled Threshold : - Current Collected BW: - Auto BW Freq : - Min BW : - Max BW : - Offload : Disabled Offload Freq : - Low Value : - High Value : - Readjust Value : - Offload Explicit Path Name: - Tunnel Group : Primary Interfaces Protected: - Excluded IP Address : - Referred LSP Count : 0 Primary Tunnel : - Pri Tunn Sum : - Backup Tunnel : - Group Status : Up Oam Status : None IPTN InLabel : - Tunnel BFD Status : - BackUp LSP Type : None BestEffort : - Secondary HopLimit : - BestEffort HopLimit : - Secondary Explicit Path Name: - Secondary Affinity Prop/Mask: 0x0/0x0 BestEffort Affinity Prop/Mask: - IsConfigLspConstraint: - Hot-Standby Revertive Mode: Revertive Hot-Standby Overlap-path: Disabled Hot-Standby Switch State: CLEAR Bit Error Detection: Disabled Bit Error Detection Switch Threshold: - Bit Error Detection Resume Threshold: - Ip-Prefix Name : - P2p-Template Name : - PCE Delegate : No LSP Control Status : Local control Path Verification : No Entropy Label : - Associated Tunnel Group ID: - Associated Tunnel Group Type: - Auto BW Remain Time : - Reopt Remain Time : - Segment-Routing Remote Label : - Metric Inherit IGP : None Binding Sid : 2001 Reverse Binding Sid : 2002 FRR Attr Source : - Is FRR degrade down : - Primary LSP ID : 1.1.1.1:3 LSP State : UP LSP Type : Primary Setup Priority : 7 Hold Priority: 7 IncludeAll : 0x0 IncludeAny : 0x0 ExcludeAny : 0x0 Affinity Prop/Mask : 0x0/0x0 Resv Style : SE Configured Bandwidth Information: CT0 Bandwidth(Kbit/sec): 0 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Actual Bandwidth Information: CT0 Bandwidth(Kbit/sec): 0 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Explicit Path Name : path2pe2 Hop Limit: - Record Route : - Record Label : - Route Pinning : - FRR Flag : - IdleTime Remain : - BFD Status : - Soft Preemption : - Reroute Flag : - Pce Flag : Normal Path Setup Type : EXPLICIT Create Modify LSP Reason: -# Check the status on PE2.[~PE2] display mpls te tunnel-interface tunnel3 Tunnel Name : Tunnel3 Signalled Tunnel Name: - Tunnel State Desc : CR-LSP is Up Tunnel Attributes : Active LSP : Primary LSP Traffic Switch : - Session ID : 400 Ingress LSR ID : 4.4.4.4 Egress LSR ID: 1.1.1.1 Admin State : UP Oper State : UP Signaling Protocol : Segment-Routing FTid : 65 Tie-Breaking Policy : None Metric Type : None Bfd Cap : None Reopt : Disabled Reopt Freq : - Inter-area Reopt : Disabled Auto BW : Disabled Threshold : - Current Collected BW: - Auto BW Freq : - Min BW : - Max BW : - Offload : Disabled Offload Freq : - Low Value : - High Value : - Readjust Value : - Offload Explicit Path Name: - Tunnel Group : Primary Interfaces Protected: - Excluded IP Address : - Referred LSP Count : 0 Primary Tunnel : - Pri Tunn Sum : - Backup Tunnel : - Group Status : Up Oam Status : None IPTN InLabel : - Tunnel BFD Status : - BackUp LSP Type : None BestEffort : - Secondary HopLimit : - BestEffort HopLimit : - Secondary Explicit Path Name: - Secondary Affinity Prop/Mask: 0x0/0x0 BestEffort Affinity Prop/Mask: - IsConfigLspConstraint: - Hot-Standby Revertive Mode: Revertive Hot-Standby Overlap-path: Disabled Hot-Standby Switch State: CLEAR Bit Error Detection: Disabled Bit Error Detection Switch Threshold: - Bit Error Detection Resume Threshold: - Ip-Prefix Name : - P2p-Template Name : - PCE Delegate : No LSP Control Status : Local control Path Verification : No Entropy Label : - Associated Tunnel Group ID: - Associated Tunnel Group Type: - Auto BW Remain Time : - Reopt Remain Time : - Segment-Routing Remote Label : - Metric Inherit IGP : None Binding Sid : 2002 Reverse Binding Sid : 2001 FRR Attr Source : - Is FRR degrade down : - Primary LSP ID : 4.4.4.4:4 LSP State : UP LSP Type : Primary Setup Priority : 7 Hold Priority: 7 IncludeAll : 0x0 IncludeAny : 0x0 ExcludeAny : 0x0 Affinity Prop/Mask : 0x0/0x0 Resv Style : SE Configured Bandwidth Information: CT0 Bandwidth(Kbit/sec): 0 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Actual Bandwidth Information: CT0 Bandwidth(Kbit/sec): 0 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Explicit Path Name : path2pe1 Hop Limit: - Record Route : - Record Label : - Route Pinning : - FRR Flag : - IdleTime Remain : - BFD Status : - Soft Preemption : - Reroute Flag : - Pce Flag : Normal Path Setup Type : EXPLICIT Create Modify LSP Reason: -
Configuration Files
PE1 configuration file
# sysname PE1 # mpls lsr-id 1.1.1.1 # mpls mpls te # explicit-path path2asbr1 next sid label 330102 type adjacency # explicit-path path2pe2 next sid label 1000 type binding-sid next sid label 32770 type adjacency next sid label 2000 type binding-sid # segment-routing # isis 1 is-level level-2 cost-style wide network-entity 10.0000.0000.0001.00 traffic-eng level-2 segment-routing mpls # interface GigabitEthernet0/1/0 undo shutdown ip address 10.0.1.1 255.255.255.0 isis enable 1 mpls mpls te # interface LoopBack1 ip address 1.1.1.1 255.255.255.255 isis enable 1 isis prefix-sid absolute 16100 # interface Tunnel1 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 2.2.2.2 mpls te signal-protocol segment-routing mpls te tunnel-id 1 mpls te path explicit-path path2asbr1 mpls te binding-sid label 1000 # interface Tunnel3 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 4.4.4.4 mpls te signal-protocol segment-routing mpls te tunnel-id 100 mpls te path explicit-path path2pe2 # return
ASBR1 configuration file
# sysname ASBR1 # mpls lsr-id 2.2.2.2 # mpls mpls te # explicit-path path2pe1 next sid label 330201 type adjacency # segment-routing # isis 1 is-level level-2 cost-style wide network-entity 10.0000.0000.0002.00 traffic-eng level-2 segment-routing mpls # interface GigabitEthernet0/1/0 undo shutdown ip address 10.1.1.1 255.255.255.0 mpls mpls te # interface GigabitEthernet0/1/8 undo shutdown ip address 10.2.1.1 255.255.255.0 mpls mpls te # interface GigabitEthernet0/1/16 undo shutdown ip address 10.0.1.2 255.255.255.0 isis enable 1 mpls mpls te # interface LoopBack1 ip address 2.2.2.2 255.255.255.255 isis enable 1 isis prefix-sid absolute 16200 # interface Tunnel1 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 1.1.1.1 mpls te signal-protocol segment-routing mpls te tunnel-id 1 mpls te path explicit-path path2pe1 mpls te binding-sid label 4000 # bgp 100 peer 3.3.3.3 as-number 200 peer 3.3.3.3 ebgp-max-hop 2 peer 3.3.3.3 connect-interface LoopBack1 peer 3.3.3.3 egress-engineering # ipv4-family unicast network 2.2.2.2 255.255.255.255 network 10.1.1.0 255.255.255.0 network 10.2.1.0 255.255.255.0 import-route isis 1 # link-state-family unicast # ip route-static 3.3.3.3 255.255.255.255 gigabitethernet0/1/0 10.1.1.2 description asbr1toasbr2 ip route-static 3.3.3.3 255.255.255.255 gigabitethernet0/1/8 10.2.1.2 description asbr1toasbr2 # return
ASBR2 configuration file
# sysname ASBR2 # mpls lsr-id 3.3.3.3 # mpls mpls te # explicit-path path2pe2 next sid label 330304 type adjacency # segment-routing # isis 1 is-level level-2 cost-style wide network-entity 10.0000.0000.0003.00 traffic-eng level-2 segment-routing mpls # interface GigabitEthernet0/1/0 undo shutdown ip address 10.1.1.2 255.255.255.0 mpls mpls te # interface GigabitEthernet0/1/8 undo shutdown ip address 10.2.1.2 255.255.255.0 mpls mpls te # interface GigabitEthernet0/1/16 undo shutdown ip address 10.9.1.1 255.255.255.0 isis enable 1 mpls mpls te # interface LoopBack1 ip address 3.3.3.3 255.255.255.255 isis enable 1 isis prefix-sid absolute 16300 # interface Tunnel2 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 4.4.4.4 mpls te signal-protocol segment-routing mpls te tunnel-id 1 mpls te path explicit-path path2pe2 mpls te binding-sid label 2000 # bgp 200 peer 2.2.2.2 as-number 100 peer 2.2.2.2 ebgp-max-hop 2 peer 2.2.2.2 connect-interface LoopBack 1 peer 2.2.2.2 egress-engineering # ipv4-family unicast network 3.3.3.3 255.255.255.255 network 10.1.1.0 255.255.255.0 network 10.2.1.0 255.255.255.0 import-route isis 1 # link-state-family unicast # ip route-static 2.2.2.2 255.255.255.255 gigabitethernet0/1/0 10.1.1.1 description asbr2toasbr1 ip route-static 2.2.2.2 255.255.255.255 gigabitethernet0/1/8 10.2.1.1 description asbr2toasbr1 # return
PE2 configuration file
# sysname PE2 # mpls lsr-id 4.4.4.4 # mpls mpls te # explicit-path path2asbr2 next sid label 330403 type adjacency # explicit-path path2pe1 next sid label 3000 type binding-sid next sid label 31770 type adjacency next sid label 4000 type binding-sid # segment-routing # isis 1 is-level level-2 cost-style wide network-entity 10.0000.0000.0004.00 traffic-eng level-2 segment-routing mpls # interface GigabitEthernet0/1/0 undo shutdown ip address 10.9.1.2 255.255.255.0 isis enable 1 mpls mpls te # interface LoopBack1 ip address 4.4.4.4 255.255.255.255 isis enable 1 isis prefix-sid absolute 16400 # interface Tunnel2 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 3.3.3.3 mpls te signal-protocol segment-routing mpls te tunnel-id 1 mpls te path explicit-path path2asbr2 mpls te binding-sid label 3000 # interface Tunnel3 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 1.1.1.1 mpls te signal-protocol segment-routing mpls te tunnel-id 400 mpls te path explicit-path path2pe1 # return