But
because of the addition
of the label header, the
MTU on LAN interfaces
should be increased to
prevent IP fragmentation.
NOTE: The minimum
MTU is 64 bytes.
The maximum MTU
depends on the type of
interface medium that is
being used.
Con?¬?guration Example: Con?¬?guring Frame Mode MPLS 27
Con?¬?guration Example: Con?¬?guring Frame Mode MPLS
Figure 3-1 shows the network topology for the con?¬?guration that follows, which shows how
to con?¬?gure Frame Mode MPLS using commands covered in this chapter.
Figure 3-1 Network Topology for Frame Mode MPLS Con?¬?guration Example
R1 Router
Router>eennaabbllee Moves to privileged mode
Router#ccoonnffiigguurree tteerrmmiinnaall Moves to global
con?¬?guration mode
Router(config)#hhoossttnnaammee RR11 Assigns hostname to
router
R1(config)#iipp cceeff Enables CEF on device
(enabled by default)
R1(config)#mmppllss iipp Enables MPLS globally
on device (enabled by
default)
R1(config)#iinntteerrffaaccee llooooppbbaacckk 00 Moves to interface
con?¬?guration mode
R1(config-if)#iipp aaddddrreessss 117722..1166..11..11
225555..225555..225555..00
Assigns IP address and
netmask
R1(config-if)#iinntteerrffaaccee ffaasstteetthheerrnneett 00//00 Moves to interface
con?¬?guration mode
R1(config-if)#iipp aaddddrreessss 117722.
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