MPLS Application Example Configuring MPLS
page 10-34 OmniSwitch AOS Release 6 Network Configuration Guide September 2009
Router 3 (connects to R1 over VLAN 30, R2 over VLAN 20, and R4 over VLAN 40).
1 Prepare the router by setting up VLANs, port assignments, and interfaces.
-> vlan 20
-> ip interface vlan-20 address 192.168.20.3 vlan 20
-> vlan 20 port default 1/1
-> vlan 30
-> ip interface vlan-30 address 192.168.30.3 vlan 30
-> vlan 30 port default 1/2
-> vlan 40
-> ip interface vlan-40 address 40.40.40.3 vlan 40
-> vlan 40 port default 5/2
-> ip interface Loopback0 address 10.10.10.3
The above commands created VLANs 20, 30, and 40, IP interfaces for the VLANs, and the Loopback0
interface address.
• VLAN 20 handles the connection between R3 and R2, using IP interface 192.168.20.3 and port 1/1.
• VLAN 30 handles the connection between R3 and R1 using IP interface 192.168.30.3 and port 1/2.
• VLAN 40 handles the connection between R3 and R4, using IP interface 40.40.40.3 and port 5/2.
• The Loopback0 interface was assigned 10.10.10.3, which serves as the MPLS system IP interface.
2 Enable the MPLS instance (enabled by default) and create and enable static LSP instances.
-> configure router mpls no shutdown
-> configure router mpls static-lsp to-R2
-> configure router mpls static-lsp to-R2 to 10.10.10.1
-> configure router mpls static-lsp to-R2 push 555 next-hop 192.168.30.1
-> configure router mpls static-lsp to-R2 no shutdown
-> configure router mpls static-lsp to-R4
-> configure router mpls static-lsp to-R4 to 10.1.1.3
-> configure router mpls static-lsp to-R4 push 556 next-hop 192.168.30.1
-> configure router mpls static-lsp to-R4 no shutdown
-> configure router mpls static-lsp to-R2-alt
-> configure router mpls static-lsp to-R2-alt to 10.10.10.1
-> configure router mpls static-lsp to-R2-alt push 111 next-hop 192.168.20.2
-> configure router mpls static-lsp to-R2-alt no shutdown
-> configure router mpls static-lsp to-R4-alt
-> configure router mpls static-lsp to-R4-alt to 10.1.1.3
-> configure router mpls static-lsp to-R4-alt push 222 next-hop 192.168.20.2
-> configure router mpls static-lsp to-R4-alt no shutdown
The above commands created static LSP “to-R2”, backup static LSP “to-R2-alt”, static LSP “to-R4”,
and backup static LSP “to-R4-alt”.
• The “to-R2” instance provides a static LSP from R3 through transit router R1 to egress router R2
(10.10.10.2). This instance pushes label 555 onto packets and forwards them to R1, where the label
is swapped and the packets are forwarded to R2.
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