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Question 19/95
Refer to the exhibit.
The exhibit shows the flow entries for an HP 3800 switch running software KA.15.17. HP Network Protector SDN Application creates the flow entry that is highlighted in the exhibit. Based on the flow entry, which step should the administrator take to optimize the solution performance?
The exhibit shows the flow entries for an HP 3800 switch running software KA.15.17. HP Network Protector SDN Application creates the flow entry that is highlighted in the exhibit. Based on the flow entry, which step should the administrator take to optimize the solution performance?
Correct Answer: B
Explanation/Reference:
TCP/UDP port 53 is the DNS (Domain Name Service), which is used for domain name resolution.
Service Insertion
The application uses OpenFlow to redirect DNS traffic from the switch to the application and compares it against RepDV to make forwarding or blocking decisions. However, packets of new flows need to be copied to switch CPU for processing and then redirected to the application, limiting performance in the range of tens of megabits per second. To maximize the performance and keep the switch to what it does best, packets switching, the switch hardware is used to pipe traffic directly to application, yielding potential performance in the gigabits per second range or line rate. In other words, packets are forwarded by switch hardware instead by switch CPU through a Service Insertion tunnel. The desired best performance for application is achieved with switches that support OpenFlow and tunnel technology for Service Insertion.
Figure: Service insertion mechanism
References: HP Network Protector SDN Application - Introduction of the HP Network Protector Solution
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c04626978#N100B0
TCP/UDP port 53 is the DNS (Domain Name Service), which is used for domain name resolution.
Service Insertion
The application uses OpenFlow to redirect DNS traffic from the switch to the application and compares it against RepDV to make forwarding or blocking decisions. However, packets of new flows need to be copied to switch CPU for processing and then redirected to the application, limiting performance in the range of tens of megabits per second. To maximize the performance and keep the switch to what it does best, packets switching, the switch hardware is used to pipe traffic directly to application, yielding potential performance in the gigabits per second range or line rate. In other words, packets are forwarded by switch hardware instead by switch CPU through a Service Insertion tunnel. The desired best performance for application is achieved with switches that support OpenFlow and tunnel technology for Service Insertion.
Figure: Service insertion mechanism
References: HP Network Protector SDN Application - Introduction of the HP Network Protector Solution
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c04626978#N100B0
- Question List (95q)
- Question 1: Refer to the exhibit. (Exhibit) A network administrator is s...
- Question 2: Table of Acronyms (Exhibit) Refer to the exhibit. (Exhibit) ...
- Question 3: (Exhibit) A customer has a data center but needs to expand t...
- Question 4: Refer to the exhibit. (Exhibit) A network administrator want...
- Question 5: (Exhibit) A company is using MCE to create a multi-tenant da...
- Question 6: A company has an HP VAN SDN Controller. Network administrato...
- Question 7: Table of Acronyms (Exhibit) Refer to the exhibit. (Exhibit) ...
- Question 8: A company is deploying the HP Network Protector SDN Applicat...
- Question 9: An HP Comware switch is controlled by a team of HP VAN SDN C...
- Question 10: Table of Acronyms. (Exhibit) Refer to the exhibit. (Exhibit)...
- Question 11: An OpenFlow controller controls several switches that operat...
- Question 12: Refer to the exhibits on the Exhibit 1 and Exhibit 2 tabs. E...
- Question 13: A company wants to implement an SDN solution that provides a...
- Question 14: Table of acronyms (Exhibit) A network administrator establis...
- Question 15: A company is using HP Network Visualizer to monitor traffic ...
- Question 16: Table of Acronyms. (Exhibit) Refer to the exhibit. (Exhibit)...
- Question 17: Refer to the exhibits on the Exhibit 1 and Exhibit 2 tabs. E...
- Question 18: Refer to the exhibits. Exhibit 1 (Exhibit) Exhibit 2 (Exhibi...
- Question 19: Refer to the exhibit. (Exhibit) The exhibit shows the flow e...
- Question 20: Refer to the exhibits. (Exhibit) A network administrator has...
- Question 21: A company has a team of HP VAN SDN Controllers. On several C...
- Question 22: An HP ProVision switch supports VLANs 1, 10, 20, and 30. A n...
- Question 23: Which technology is best suited for isolating tenants within...
- Question 24: Refer to the exhibit. (Exhibit) The exhibit shows the four O...
- Question 25: Refer to the exhibit. (Exhibit) The switches shown in the ex...
- Question 26: Table of acronyms (Exhibit) A company has a VoIP solution th...
- Question 27: Refer to the exhibit. (Exhibit) A company is using HP Networ...
- Question 28: (Exhibit) Refer to the exhibits. Exhibit 1 (Exhibit) Exhibit...
- Question 29: A company has an external SDN application that works with an...
- Question 30: A company needs a team of HP VAN SDN Controllers. What is th...
- Question 31: Refer to the exhibits. Exhibit 1 (Exhibit) A network adminis...
- Question 32: Refer to the exhibit. (Exhibit) Which purpose does the highl...
- Question 33: (Exhibit) An HP Comware switch supports four MDCs. The opera...
- Question 34: Table of Acronyms (Exhibit) Refer to the exhibit. (Exhibit) ...
- Question 35: Which benefit does the HP Network Visualizer SDN Application...
- Question 36: Table of Acronyms (Exhibit) Refer to the exhibit. (Exhibit) ...
- Question 37: A company has a data center that hosts multiple tenants. The...
- Question 38: Refer to the exhibit. (Exhibit) A standard ARP packet arrive...
- Question 39: An HP Provision switch is controlled by a team of HP VAN SDN...
- Question 40: Refer to the exhibit. (Exhibit) A network administrator want...
- Question 41: A network administrator has installed an SDN application fro...
- Question 42: Refer to the exhibit. (Exhibit) A network administrator send...
- Question 43: DRAG DROP Evaluate each scenario for multi-tenant isolation,...
- Question 44: Refer to the exhibit. (Exhibit) What is one way that a netwo...
- Question 45: A network administrator is planning a flow table entry that ...
- Question 46: A company plans to develop an SDN application in-house. The ...
- Question 47: Which type of authentication system is recommended for most ...
- Question 48: Refer to the exhibit. (Exhibit) Which design in the exhibit ...
- Question 49: (Exhibit) Refer to the exhibit. (Exhibit) Switch 1, Switch 2...
- Question 50: Refer to the exhibit. (Exhibit) Assume that the switches in ...
- Question 51: A customer requires greater visibility and insight into traf...
- Question 52: A company needs to integrate its HP Network Visualizer solut...
- Question 53: What is a benefit of using the HP Network Visualizer SDN app...
- Question 54: Refer to the exhibit. (Exhibit) A network administrator want...
- Question 55: Refer to the exhibits. Exhibit 1 (Exhibit) Exhibit 2 (Exhibi...
- Question 56: A customer has an existing network that includes HP Comware ...
- Question 57: An HP switch is controlled by an HP VAN SDN Controller. An S...
- Question 58: (Exhibit) Refer to the exhibit. (Exhibit) The switches shown...
- Question 59: (Exhibit) Which requirement does EVI selective flooding help...
- Question 60: A company has an HP Helion CloudSystem solution that include...
- Question 61: (Exhibit) A customer has five data centers. Each data center...
- Question 62: A network administrator is setting up OpenFlow settings on a...
- Question 63: A company is deploying the HP Network Visualizer SDN Applica...
- Question 64: What is a benefit of the HP Network Protector SDN Applicatio...
- Question 65: A switch is configured with four OpenFlow tables: Table 0, T...
- Question 66: Refer to the exhibit. (Exhibit) A network administrator is c...
- Question 67: Refer to the exhibit. (Exhibit) Switch 1 is operating in NPV...
- Question 68: A company has a data center that hosts multiple tenants. The...
- Question 69: (Exhibit) Refer to the exhibits. Exhibit 1 (Exhibit) Assume ...
- Question 70: Refer to the exhibit. (Exhibit) A company is using HP Networ...
- Question 71: Refer to the exhibits. (Exhibit) A network administrator is ...
- Question 72: A company has deployed the HP Network Protector SDN Applicat...
- Question 73: A company has deployed the HP Network Protector SDN Applicat...
- Question 74: A company requires secure, encrypted connections between Ope...
- Question 75: Refer to the exhibit. (Exhibit) A network administrator want...
- Question 76: What correctly describes the role of OpenFlow in an SDN solu...
- Question 77: Refer to the exhibits on the Exhibit 1 and Exhibit 2 tabs. E...
- Question 78: A cloud service provider has multiple data centers. The prov...
- Question 79: A company has a data center, which hosts production services...
- Question 80: (Exhibit) An HP Comware switch has four MDCs defined on it. ...
- Question 81: (Exhibit) Refer to the exhibits. Exhibit 1. (Exhibit) All li...
- Question 82: What is a benefit of enabling tandem multicast replication f...
- Question 83: A company needs an HP SDN solution that: Helps protect its B...
- Question 84: Table of Acronyms (Exhibit) Refer to the exhibit. (Exhibit) ...
- Question 85: A company has an HP VAN SDN Controller with Network Protecto...
- Question 86: Refer to the exhibit. (Exhibit) The exhibit shows the Fibre ...
- Question 87: Refer to the exhibits. Exhibit 1. (Exhibit) Exhibit 2 (Exhib...
- Question 88: An HP ProVision switch is controlled by a team of HP VAN SDN...
- Question 89: Refer to the exhibit. (Exhibit) The switches shown in the ex...
- Question 90: Refer to the exhibit. (Exhibit) A network administrator want...
- Question 91: An SDN application submits a username and password to authen...
- Question 92: Which common data center requirement does an HP EVI solution...
- Question 93: Which HP IMC module helps companies to manage TRILL and SPBM...
- Question 94: Refer to the exhibit. (Exhibit) The switches shown in the ex...
- Question 95: Refer to the exhibit. (Exhibit) A network administrator is s...
