Part 3: Verification in .NET

Generating Code 128 Code Set A in .NET Part 3: Verification
Part 3: Verification
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1a. How many routers does CE1 see between itself and Device4 CE1 sees no router hops between itself and Device4. This is exactly the same as if the two were connected by an Ethernet switch. 1b. Does CE1 see the connection to Device4 as routed or switched (at Layer 2) Explain your answer. CE1 sees a switched connection. If CE1 saw a routed connection, it would expect to see one or more hops between itself and Device4. 2a. Are any PE interfaces reachable No PE interfaces are reachable. In fact, none of the Provider Core network is visible or reachable from the customer side. This is the essential idea of a VPN: The customer and provider networks appear completely separate. 3a. How many OSPF adjacencies are there on each CE device The CE devices only see OSPF adjacencies between themselves.
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3b. Are there any adjacencies with, or LSAs from the PE routers On the CE devices, there are no adjacencies or LSAs from the PE routers. 3c. From CE1, which system interfaces can you ping PE1 PE2 Device4 CE1 can only ping interfaces on Device4. It cannot ping the system or any other interface on PE1 or PE2. 3d. Explain the results. None of the Provider Core network is visible or reachable from the customer side. This is true for both Layer 2 Ethernet frames and Layer 3 IP packets. This is the essential idea of a VPN: The customer and provider networks appear completely separate. 3e. Are the OSPF sessions on the CE devices connected in any way to the OSPF sessions on the PE devices There is no exchange of information whatsoever between the customer OSPF session and the provider OSPF sessions. Thus, even for OSPF, the customer and provider networks appear completely separate. 4a. Explain the results. As soon as one SDP is down, the VPLS service between the PE nodes goes down. The result is the same as if an Ethernet switch were unplugged: All connectivity is lost, the OSPF adjacencies are lost, and all OSPF routes are removed from the routing table. 6a. How many services are there on each PE device Each PE device shows only a single VPLS, which is running across both PE devices. 6b. what is the status of each service At this point in time, the service appears on both PE routers as Up since it should be fully operational. 7a. Are the databases identical or different If different, what is different Explain the results. The databases should both have the same number of entries. The entries should be for the same MAC addresses. The Source-Id should be opposite on the two routers: what is learned from a SAP on one router should appear as learned from an SDP on the other router.
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7b. How many local MAC addresses are in the CE1 table There is one local MAC address: 00:1a:f0:5c:73:c5. It is considered local because it was learned from a SAP, shown as sap 1/1/1 in the output. 7c. How many remote MAC addresses are in the CE1 table There is one remote MAC address: 00:1a:f0:5c:6e:1b. It is considered remote because it was learned from an SDP, shown as sdp 12:22 in the output.
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*B:PE1# configure router *B:PE1>config>router# info #---------------------------------------------#-------------------------------------------------echo IP Configuration #-------------------------------------------------interface loopbackTest address 140.10.0.11/32 loopback exit interface system address 140.10.0.1/32 exit interface toPE2 address 140.10.0.97/30 port 1/1/2 exit #-------------------------------------------------echo OSPFv2 Configuration #-------------------------------------------------ospf asbr export DistributeLB area 0.0.0.0 interface system exit interface toPE2 exit exit exit
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#-------------------------------------------------echo LDP Configuration #-------------------------------------------------ldp interface-parameters interface toPE2 exit exit targeted-session exit exit #-------------------------------------------------echo Policy Configuration #-------------------------------------------------policy-options begin policy-statement DistributeLB entry 10 from protocol direct exit action accept exit exit exit commit exit #---------------------------------------------*B:PE1>config>router# exit *B:PE1 # *B:PE1# configure service *B:PE1>config>service# info #---------------------------------------------customer 1 create description Default customer exit sdp 12 mpls create far-end 150.10.0.1
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