- Configuring Cisco Express Forwarding
- Configuring MPLS on a Frame Mode Interface
- Configuring MTU Size in Label Switching
- Configuration Example: Configuring Frame Mode MPLS
Configuration Example: Configuring Frame Mode MPLS
Figure 3-1 shows the network topology for the configuration that follows, which shows how to configure Frame Mode MPLS using commands covered in this chapter.
Figure 3-1 Network Topology for Frame Mode MPLS Configuration Example
R1 Router
Router>enable |
Moves to privileged mode |
Router#configure terminal |
Moves to global configuration mode |
Router(config)#hostname R1 |
Assigns hostname to router |
R1(config)#ip cef |
Enables CEF on device (enabled by default) |
R1(config)#mpls ip |
Enables MPLS globally on device (enabled by default) |
R1(config)#interface loopback 0 |
Moves to interface configuration mode |
R1(config-if)#ip address 172.16.1.1 255.255.255.0 |
Assigns IP address and netmask |
R1(config-if)#interface fastethernet 0/0 |
Moves to interface configuration mode |
R1(config-if)#ip address 172.16.10.1 255.255.255.0 |
Assigns IP address and netmask |
R1(config-if)#mpls ip |
Enables MPLS on this interface |
R1(config-if)#mpls mtu 1508 |
Changes the maximum size of the packet allowed on this interface to 1508 bytes |
R1(config-if)#no shutdown |
Activates interface |
R1(config-if)#exit |
Returns to global configuration mode |
R1(config)#router eigrp 1 |
Enables the EIGRP routing process for AS 1 |
R1(config-router)#network 172.16.0.0 |
Specifies which network to advertise in EIGRP |
R1(config-router)#no auto-summary |
Turns off the auto-summarization feature |
R1(config-router)#exit |
Returns to global configuration mode |
R1(config)#exit |
Returns to privileged mode |
R1#copy running-config startup-config |
Saves configuration in NVRAM |
R2 Router
Router>enable |
Moves to privileged mode |
Router#configure terminal |
Moves to global configuration mode |
Router(config)#hostname R2 |
Assigns hostname to router |
R2(config)#ip cef |
Enables CEF on device (enabled by default) |
R2(config)#mpls ip |
Enables MPLS globally on device (enabled by default) |
R2(config)#interface loopback 0 |
Moves to interface configuration mode |
R2(config-if)#ip address 172.16.2.1 255.255.255.0 |
Assigns IP address and netmask |
R2(config-if)#interface fastethernet 0/0 |
Moves to interface configuration mode |
R2(config-if)#ip address 172.16.10.2 255.255.255.0 |
Assigns IP address and netmask |
R2(config-if)#mpls ip |
Enables MPLS on this interface |
R2(config-if)#mpls mtu 1508 |
Changes the maximum size of the packet allowed on this interface to 1508 bytes |
R2(config-if)#no shutdown |
Activates interface |
R2(config-if)#interface serial 0/0/0 |
Moves to interface configuration mode |
R2(config-if)#ip address 172.16.20.5 255.255.255.252 |
Assigns IP address and netmask |
R2(config-if)#mpls ip |
Enables MPLS on this interface |
R2(config-if)#clock rate 64000 |
Enables clock rate for this interface |
R2(config-if)#no shutdown |
Activates interface |
R2(config-if)#exit |
Returns to global configuration mode |
R2(config)#router eigrp 1 |
Enables the EIGRP routing process for AS 1 |
R2(config-router)#network 172.16.0.0 |
Specifies which network to advertise in EIGRP |
R2(config-router)#no auto-summary |
Turns off the auto-summarization feature |
R2(config-router)#exit |
Returns to global configuration mode |
R2(config)#exit |
Returns to privileged mode |
R2#copy running-config startup-config |
Saves configuration in NVRAM |
R3 Router
Router>enable |
Moves to privileged mode |
Router#configure terminal |
Moves to global configuration mode |
Router(config)#hostname R3 |
Assigns hostname to router |
R3(config)#ip cef |
Enables CEF on device (enabled by default) |
R3(config)#mpls ip |
Enables MPLS globally on device (enabled by default) |
R3(config)#interface loopback 0 |
Moves to interface configuration mode |
R3(config-if)#ip address 172.16.3.1 255.255.255.0 |
Assigns IP address and netmask |
R3(config-if)#interface serial 0/0/0 |
Moves to interface configuration mode |
R3(config-if)#ip address 172.16.20.6 255.255.255.252 |
Assigns IP address and netmask |
R3(config-if)#mpls ip |
Enables MPLS on this interface |
R3(config-if)#no shutdown |
Activates interface |
R3(config-if)#exit |
Returns to global configuration mode |
R3(config)#router eigrp 1 |
Enables the EIGRP routing process for AS 1 |
R3(config-router)#network 172.16.0.0 |
Specifies which network to advertise in EIGRP |
R3(config-router)#no auto-summary |
Turns off the auto-summarization feature |
R3(config-router)#exit |
Returns to global configuration mode |
R3(config)#exit |
Returns to privileged mode |
R3#copy running-config startup-config |
Saves configuration in NVRAM |