CCIP certification (642-611 MPLS configure)
No. 642-611 for the Implementing Cisco MPLS certification exam will test the skills of those below.
Cisco originally developed the type of MPLS technology, and the technology known as label switching. Later this technology for the development of MPLS Label Switching. CCIP exam to understand the requirements of the Cisco Label Switching MPLS, as well as instruction instructions. Label Switching MPLS configuration and instructions will appear in the examination.
MPLS service routers configured to send a variety of components. Must set the standard routing protocols to ensure that the carrier edge (PE) routers and carrier (P) between the router can communicate with each other. BGP (Border Gateway Protocol) devoted to the PE router, so that users to exchange routing information. In addition to IP routing, the router must exchange label and the establishment of Label Switching channels, and routing information to the user into a virtual routing and forwarding.
Please pay close attention to the syntax, because the test will ask you to enter or identify the IOS command.
Open the label or tag exchange
In order to open the Label Switching, you have to set up CEF (Cisco EXPress Forwarding, Cisco Fast forward) and told the router label release. In addition, each interface must enable the label switching. In order entered on the router to use the word bold.
Label exchange settings
P1 (config) # ip cef
P1 (config) # tag-switching advertise-tag
P1 (config) # interface serial 0
P1 (config-if) # tag-switching ip
MPLS set
P1 (config) # ip cef
P1 (config) # mpls ip
P1 (config) # interface serial 0
P1 (config-if) # mpls ip
The request is set to start routers exchange and the establishment of labels Label Switching MPLS across the channel in order to transmit communications lines. Once the open exchange of MPLS labels or functions, routers and found that neighbors began to label switching. Label Switching neighbors for the use of UDP, TCP port 711 for the use of label switching. MPLS also exchange the use of UDP for neighbors, but rely on the label distribution protocol Label Switching.
Set in Router implementation of the neighbors and found Label Switching, to verify the process of instruction has been successfully completed, and shows are as follows:
Neighbors verified
TAG
P1 # show tag-switching tdp-neighbor
MPLS
P1 # show mpls ldp neighbor
These instructions will show that the output of the identity of neighbors (in the form of IP addresses) and the neighbor state. Need to pay attention to the crucial point is to enter the other’s identity and status. The other side of the state should be OPER.
Other important instructions
MPLS configure verified at the appropriate interface has been opened
TAG
P1 # show tag-switching interfaces
MPLS Verification
P1 # show mpls Interface
To verify the proper display interface
Verify label / tag and release bindings
TAG
P1 # show tag-switching tdp discovery
P1 # show tag-switching tdp bindings
MPLS Verification
P1 # show mpls ldp discovery
P1 # show mpls ldp bindings
1. TDP to verify or find the source of LDP labels
2. Verification IP routing are bound to their labels.