NAD 3020 manuale d’uso

Integrating the Cisco Catalyst Blade Switch 3020 for the HP c-Class BladeSystem into the Cisco Data Center Network Architecture Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Public Information.[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 2 of 28 Contents Introduction ................................................................................................................... .................. 3 HP c-Class BladeSystem Enclosure Overv iew ...........................[...]

Design Guide Introduction This guide provides best d esign practices for deploying the Ci sco ® Catalyst ® Blade Switch 3020 for the HP c-Class BladeSystem enclosure within the Cisco Data Center Networking Architecture. It describes the internal components of the blade-serve r enclosure and Cisco Catal yst Blade Switch 3020 and explore s differen[...]

Design Guide Figure 2. Enclosure Interconnections Us ing Full-Height Servers Figure 3. Enclosure Interconnections Us ing Half-Height Servers © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 4 of 28[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 5 of 28 Cisco Catalyst Blade Switch 3020 for HP This section briefly describes the Cisco Catalyst Blade S witch 3020 for HP and explains how the blade servers within the HP c-Class BladeS ystem are physically connecte d to the switching [...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 6 of 28 Cisco Catalyst Blade Switch 3020 Features This section highlights inf ormation about the protoc ols and features provid ed by the Cisco Catalyst Blade Switch 3020 that help integrate the HP c-Class Blad eSystem enclosure into the[...]

Design Guide A scenario wherein BPDUs are lost may be caused by unidirectional links, which can cause Layer 2 loops. To prevent this problem, use Loop G uard a nd UDLD. Loop Guard prevents a port from forwarding as a result of missed BPDUs, which might cause a Layer 2 loop that could bring down the network. UDLD allows devices to monitor the physic[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 8 of 28 Note: The IEEE 802.1 w protocol is ena bled by default when running spann ing tree in RPVST+ or MST mode on the Cisco Catalyst Blade Switch 30 20. The Cisco Catalyst Blade Switch 3020 enables PVST+ for VLAN 1 by default. The Span[...]

Design Guide Figure 5. RSPAN Example Link Aggregation Protocols Cisco Fast EtherChannel interfaces and Gigabit Et herChan nel interfaces are logically bundled, and they provide link redunda ncy and scalable bandwidth bet ween network devices. PAgP and LACP help automaticall y create these channels by ex changing pa ckets between Ethernet interfaces[...]

Design Guide Figure 6. Alternative Network Configuration Data Center Network Architecture The architecture of the data c enter infrastructure must addr e ss the requirements necessary to create a highly available, scalabl e, and secure network. This section describes the b asic architecture necessary to meet these goals. It is a synopsis of the Cis[...]

Design Guide Figure 7. Data Center Front-End Network Aggregation Lay er The aggregation layer is a p oint of convergence fo r network traffic that provides connectivit y between server farms and the rest of the enterpr ise. T he aggregation layer supports Layer 2 and Layer 3 functions and prese nts an ideal location for deploying central ized appli[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 12 of 28 Layer 2 adjacency in the server farm allo ws for t he deployment of servers or clusters that require the exchange of information done at Layer 2 onl y. It also readil y supports access to network services in the aggregation la y[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 13 of 28 link redundancy comb ined with a deterministic topol og y design to achieve applicatio n-availability requirements. Servers are typically config ured wi th multiple NICs and dual home d to the access layer switches to provid e b[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 14 of 28 ● Network Fault Tolerance (NFT ) ● Transmit Load Balancing (T LB) ● Switch Assisted Load Balancing (server load balancin g [SLB]) NFT teaming creates a virtual interface by groupi ng the blade-server net work adapters into[...]

Design Guide Slot Count The data center infrastructure must be fle xible enough to allow growth in both server capacity and service performance. Connec ting a blade system directly into the aggreg ation layer places more significance on the number of slots available to accommodate blade-s ystem uplinks and integrated services. Traditionally, the ac[...]

Design Guide The data center core is a mechan ism to r eplicate and horizontally scale the data center environment. In the recommended des ign the aggregation and access la yers are regarded as a module that can be duplicated to extend the enterprise. Each data center module provides its o wn network services locall y in the aggregation switches. T[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 17 of 28 The Cisco Catalyst Blade S witch 3020 contains an additional Fast Ethernet port, which connects to the HP c-Class BladeSystem Onboar d Administrato r, providing OOB management using the insight manager interface. The user ma y a[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 18 of 28 Management Options The Cisco Catalyst Blade S witch 3020 switch is manageable with the following m ethods: ● HTTP-based device-manager GUI ● SNMP-based management applications ● Cisco IOS Software CLI The embedded device m[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 19 of 28 Network Topologies Usin g the Cisco Cataly st Blade Switch 3020 This section discusses the follo wing physical topologies: ● Recommended topology : Classic V-shaped topology with Spanning Tree Protocol ● Alternative topolo g[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 20 of 28 ● Primary root switch failure and recovery ● Secondary root switch failure and rec overy These tests revealed the intricacies of fast conv ergenc e in the data center and the neces sity for a holistic approach to high avai l[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 21 of 28 RSPAN requires a VLAN to carry the mirrored tr affic to the remote des tination switch. In the recommended topology, the s econdary aggregation s witch is the RSPAN destination, w here an analysis device, such as the integrated [...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 22 of 28 Step 2. Allow only those VLAN s that are necess ary on the port channel bet ween the aggregate and the blade switches. Use the switchport trunk allowed vlan vlanID command to configure the p ort-channel interfaces of the aggrega[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 23 of 28 This design supports traffic monitoring us ing SPAN or RSPAN. For example, a net work-analysis device connected to the e xternal ports on the front of the Cisco Catalyst Blade S witch 3020 may capture locally mirrored traffic. A[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 24 of 28 VLAN Configura tion To configure the VLANs on the switc hes, complete the following tasks: Set the VTP administrative domain n ame and m ode and create the server-farm VLANs a s follows: (config)# vtp domain <domain name> [...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 25 of 28 (config-if)# channel-group 1 mode active Configure the passive LACP members o n Cisco Catalyst Blade Switch 3020 switch A as follows: (config) # interface GigabitEthernet0/19 (config-if)# description <<** Connected to Aggr[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 26 of 28 Server-Port Configuration A blade server is assigned a specific p ort on the bl ade switch. This assignment is predetermined by the physical slot the blade se rver occupies in the enclosure. Table 1 correlates the server and swi[...]

Design Guide © 2008 Cisco Systems, In c. All rights reserv ed. This document is Cisco Pub lic Information. Page 27 of 28 interface GigabitEthernet0/1 description <<** BladeServer-1 **>> switchport trunk encapsulation dot1q switchport trunk allowed vlan 10,60 switchport mode trunk switchport port-security aging time 20 switchport port-s[...]

Design Guide RSPAN Configuration RSPAN allows for remote traffic monitoring in the data ce nter. Define source and destinatio n sessions to mirror intere sting traffic to a remote VLAN captured by network-anal ysis tools. Configure a VLAN for RSPAN on the Cisco Catalyst Blade Switch 3020 and the aggregate switch as follows: (config)# vlan <vlanI[...]