Dell 7000 Series manuale d’uso

Stackin g Dell P owerCon n ect 7000 Series S witches A Dell Te chni c a l Whit e Pa per www.dell.com • su pport.dell. com[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page ii THIS WHITE PAPER IS FOR I NFORMATIONAL PURPOSES ONLY , AND MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL IN ACCURACIES. THE CONTENT IS PROVID ED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTI ES OF ANY KIND. © 2011 Dell Inc. A ll rights reserve d. Reprod uction of this material in any ma nner[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 1 Contents Introd uction ................................................................................................................ 2 Applicab ility ............................................................................................................. 2 Stack ing and Ma nagem ent [...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 2 Introduct ion This whi te paper explains t he purpo se and ope ration of the sta cking feat ure in t he Dell ™ PowerCo nnect™ 7000 Seri es Gig abit Ether net switch es. The PowerCon nect 7000 serie s is Dell’s m ost advanced switc hing product l ine, offer ing advanced switchin g capab[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 3 require d for reconf igurat ion. Additi on al stack members can im mediately utiliz e existing configur ation information such as routin g and switching con figurations, VLANs, ACLs, por t profi les, and s ecurity certifi cates. Stackin g a n d Perf or mance For si tuations where ther e is a[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 4 # Figure 2 shows a recomm ended s tacking config uration w ith dua l stack ing mod ules on ea ch swi tch. Eac h swit ch connect s to ano ther w ith 128 Gbps of t otal ba ndwidth (4 ports @ 16 Gbps Tx and Rx each) . Note that in t he recomm ended c onfigura tion, the dual sta cking ca bles fr[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 5 Mixing M6 348 and PC70 00 Series Swit ches in a Stack PC700 0 series a nd M6348 can be use d interc hang eably in a sta ck of up to 12 unit s. As wi th PC 7000 - serie s only stacks, all switches in a mixed st ack must have the same f irmware ver sion. Starting with the 4.1.0. 6 software rel[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 6 members of the st ack can be powered o n seque ntially by powering up the sw itch adja cent to the last swit ch powered o n. A stack of u nits is man aged and ac ts as a singl e entity when the units ar e connec ted togethe r and are operat ional. I f a unit cannot de tect a stack ing par tn[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 7 Initial Installat ion and Power - up of a St ack Follow t hese inst ructions to cr eate a st ack: NOTE: Install units in a r ac k when ever po ssible to prevent t he units and cab les from being dis turbed. 1. Instal l all stacki ng cable s. Fully conn ect all cabl es, includ ing the re dund[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 8 Select ing the Master Unit A stack man ager is el ected or re - el ecte d based on t he fol low ing con sider ations, in or der: • Whether t he switch that was previou sly the st ack manager. • Whether t he sw itch has the high er MAC a ddress . When a switch is add ed to the st ack, one[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 9 To configu re the standby unit v ia the W eb interfac e, view the Stacking > Unit C onfiguration page an d select St andby fo r the Uni t Type . Updating t h e Firmware on a Stack Automat ic Update By defau lt, firmw are sync hronizat ion is pe rformed au tomati cally when a unit is power[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 10 4. Reload t he stack command . This res ets the entire sta ck. The s witches stop forw arding d uring the reset . 5. When th e stack ha s reload ed, check t he runni ng firm ware versio n using t he show version command. Check that all stack me mbers have joined the stack usin g the show st[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 11 Mode........................................... FTP FTP Server IP.................................. 10.27.64.141 FTP Path....................................... FTP Filename................................... PC7000_4.0.0.6.stk Data Type...................................... Code Destinatio[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 12 To perfor m the sa me confi guration by using th e Web i nterface, use the fol lowing steps: 1. From t he Switching > VLAN > VLAN Membership pag e, clic k Add . 2. From the Ad d VLAN page, ente r 1000 in th e VLAN ID field an d click Ap ply . 3. From the Ports me nu on th e Switch ing[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 13 5. From the Show VL AN menu o n the Sw itching > VLAN > VLAN Me mbership page, sel ect 1000 . 6. Click the Static box for port 17 so t hat th e let ter U (untag ged) appea rs in the box. 7. Click Apply . 8. Navigate to the Routing > I P > IP Interf ace Confi guration page.[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 14 9. In the I nterf ace fi eld, sele ct VLAN 1 000 . In the R outing Mode fiel d, select Ena bl e . In the IP Address Configura tion Method fi eld, s elect Manual. In t he IP Address fiel d, en t er 1 92.168.21. 11. In the S ubnet Mask field , ent er 255.255.255.0. Click Apply . 10 . Navigate[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 15 11 . Clic k Apply . 12 . Navigate to the Syste m > Manag emen t Secu rity > A ccess Profi le pag e. Choo se the A ccess Profi le tab. E nabl e th e Set Activ e Access Prof ile c heck box in the MGMT_VLA N Access Prof ile and clic k Apply.[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 16 Adding a Stack M ember with Minimal I n te rrupt ion When addi ng a new memb er to a sta ck, make s ure th at only the s tack ca bles an d no host - facing network cables a re connec ted befo re poweri ng up the n ew unit. Ma ke sur e the end - user link s are no t connect ed to any ports o[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 17 Removin g a Stack Member with Min imal Interruption NOTE: This migration pr ocess can be d isruptive, so sche dule some outage time. To minimize any disrupti on, plan on having one or mor e test sc enarios prepared in o rder to verify that the migrated ports a re operati ng proper ly . 1. M[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 18 Merging T wo O per atio na l Stack s The reco mmended procedu re for mergi ng two op erati onal stack s is as follow s: Caution! Thi s procedu re is dis ruptive a nd requir es a netwo rk outage . 1. Always p ower off all unit s in one stac k before connec ting to anoth er stack. 2. Add the [...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 19 If PoE is enabled o n a swit ch port sho rtly befo re a mas ter failov er and the ha rdware s tatus c hange had not yet been comm unicat ed to the backup uni t, the s witch wi ll conti nue to prov ide PoE po wer ev en though PoE is no t enab led fo r the port i n the c onfigur ation o n the[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 20 console#show switch Management Standby Preconfig Plugged - in Switch Code Switch Status Status Model ID Model ID Status Version ------ ---------- - ------------ --------- ----------- ----- - ------ -------- 1 Stack Mb r Standby PCT7048 PCT7048 OK 4.0.0.6 2 Unassigned PCT7048 Not Present 0.0[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 21 Scenario 3 The foll owing example contain s a similar con dition with a master unit fai lover and c onseq uent sta ck split with five units in the stack, as # Figure 5 shows. Figure 5. Stack Sp lit with Manager F ailure In this exampl e, there i s no li nk back t o Swit ch 5 fro m Switch 1 [...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 22 Nonstop Fo rwarding A swit ch can be des cribed i n terms of three se mi - in dependent f unctions called t he forwar ding plan e, the co ntrol plane , and th e managem ent plan e: • Forwarding Plane — The set of hardwa re compo n ents that for ward d ata packets witho ut interv entio n[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 23 To tak e full adva ntage of n onstop f orwarding , layer 2 connecti ons to nei ghbors s hould be vi a port channel s that span tw o or more stac k units, and layer 3 rou tes shoul d be e qual -c ost m ulti - p ath ( ECMP ) routes . ECM P prov ides load ba lan ci ng, using m ulti ple next ho[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 24 Figure 6. Nonstop Forwarding Example 1 2 3 Host 1 Host 2 Host 3 Switch 1 Switch 2 Route r 1 Video stream OSPF PIM - SM Spanni ng Tree IGMP VLAN 10 VLAN 20 192.168.5. 100 192.168.20. 100 192.168.20. 101[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 25 NSF Sce nario Configurati on via CLI Router 1: configure terminal hostname Router_1 ip multicast ip pim rp - address 192.168.10.1 239.0.1.1 255.255.255.0 ip pim sparse vlan database vlan 10 exit interface vlan 10 ip address 192.168.10.1 255.255.255.0 ip pim exit router ospf router - id 1.1.[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 26 Stack : configure terminal vlan database vlan 10,20 exit vlan 10 name “Routed interface to PIM RP via port - channel 1” exit vlan 20 name “Routed interface to downstream switched network” exit hostname "nsf - stack" spanning - tree mode rst ip igmp ip pim sparse ip multica[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 27 exit interface gi2/0/10 no spanning - tree auto - portfast channel - group 1 mode auto exit interface gi2/0/20 switchport mode general switchport general pvid 20 switchport general acceptable - frame - type tagged - only switchport general allowed vlan add 20 tagged switchport general allow[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 28 interface gi1/0/5 switchport mode general switchport general pvid 20 switchport general acceptable - frame - type tagged - only switchport general allowed vlan add 20 tagged switchport general allowed vlan remove 1 exit exit Switc h 2 configure terminal hostname Switch -2 vlan database vlan[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 29 NSF Example 1 A ssume U nit 1 is the s tack m anager a nd Unit 2 is the standby switch. The following sce narios illu strate how the network r ecovers when Unit 1 is powe red dow n. • With NSF dis abled : Unit 2 takes over as m anager wit h a cold rest art and clears the hardwar e tables [...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 30 NSF Re - convergence Timing As menti oned in t he previo us sectio n, NSF pro tects ag ainst f ailures by c heck - pointing information to a standb y unit . In an NSF - protect ed stack , the wo rst - case s cenario is when the master u nit fai ls. The followin g statistics show rep resenta[...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 31 Small Configuration • 6 switche s stacked • 4 VLANs, all por ts are m embers of all VLANs • 2/2 static/dyn amic l ags with 8 me mbers each • 1 MSTP instance with VLAN s • 15 ACLs ap plie d on 15 in terfaces • 5 Diffs e rv servic e interface s with po licies on 5 interfa ces • [...]

Stacking Dell PowerConnec t 70 00 S eries Switches Page 32 Stacking W eb Interface T he stack ing co nfigurat ion a nd monitori ng Web pages are acc essed from t he Syst em > St ack Manageme nt menu. The fol lowing im age shows a l ist of the Web pages that ar e availabl e for the stacking featu re. Summary This pap er has des cribed t he theory[...]