Requirements analysis, Configuration procedure – H3C Technologies H3C S6800 Series Switches User Manual
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Requirements analysis
•
To ensure that the LSRs establish LSPs automatically, enable LDP on each LSR.
•
To establish LDP LSPs, configure a routing protocol to ensure IP connectivity between the LSRs. This
example uses OSPF.
•
To ensure that LDP establishes LSPs only for the routes 11.1.1.0/24 and 21.1.1.0/24, configure LSP
generation policies on each LSR.
•
To ensure that LDP establishes LSPs only over the link Switch A—Switch B—Switch C, configure label
advertisement policies as follows:
{
Switch A advertises only the label mapping for FEC 11.1.1.0/24 to Switch B.
{
Switch C advertises only the label mapping for FEC 21.1.1.0/24 to Switch B.
{
Switch D does not advertise label mapping for FEC 21.1.1.0/24 to Switch A. Switch D does not
advertise label mapping for FEC 11.1.1.0/24 to Switch C.
Configuration procedure
1.
Configure IP addresses and masks for interfaces, including the loopback interfaces, as shown
in
. (Details not shown.)
2.
Configure OSPF on each switch to ensure IP connectivity between them. (Details not shown.)
3.
Enable MPLS and LDP:
# Configure Switch A.
<SwitchA> system-view
[SwitchA] mpls lsr-id 1.1.1.9
[SwitchA] mpls ldp
[SwitchA-ldp] quit
[SwitchA] interface vlan-interface 2
[SwitchA-Vlan-interface2] mpls enable
[SwitchA-Vlan-interface2] mpls ldp enable
[SwitchA-Vlan-interface2] quit
[SwitchA] interface vlan-interface 6
[SwitchA-Vlan-interface6] mpls enable
[SwitchA-Vlan-interface6] mpls ldp enable
[SwitchA-Vlan-interface6] quit
# Configure Switch B.
<SwitchB> system-view
[SwitchB] mpls lsr-id 2.2.2.9
[SwitchB] mpls ldp
[SwitchB-ldp] quit
[SwitchB] interface vlan-interface 2
[SwitchB-Vlan-interface2] mpls enable
[SwitchB-Vlan-interface2] mpls ldp enable
[SwitchB-Vlan-interface2] quit
[SwitchB] interface vlan-interface 3
[SwitchB-Vlan-interface3] mpls enable
[SwitchB-Vlan-interface3] mpls ldp enable
[SwitchB-Vlan-interface3] quit
# Configure Switch C.
<SwitchC> system-view