Instruction/ maintenance manual of the product 3250 3Com
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Par t No. DNA1750-0A AA02 Publ ishe d Apr il 2004 S UPER S TA CK ® 3 S WI TCH 32 26 AND S WITC H 3 250 S OF TW ARE V ERSIO N 1.02 R ELEASE N OT ES Rel ate d Do cu ment a tio n Please use t h ese note.
2 S UPER S TACK ® 3 S WITCH 3226 AND S W ITCH 3 250 S OFTWARE V ERSION 1.0 2 R ELEASE N OTES The softwa re is avai lable in two versions : ■ s3201_0 2.bin — Provides no rmal levels of encryption with keys of up to 56 bi ts in length. ■ s3201_0 2s.
Err ors a nd Omissi ons 3 Data is invalid err o r with n o exp lanati on. The new firm ware r eturns an err or desc ribing the field containing the err or and then returns to the page allo wing the err or t o be corr ecte d.
4 S UPER S TACK ® 3 S WITCH 3226 AND S W ITCH 3 250 S OFTWARE V ER SION 1. 02 R ELEASE N OTES RM O N his t o ry st at isti cs an d Web por t his t ory sta tist ics A bug in previous softw ar e versions prevented statisti cs being generated f or the fir st timing i nterval .
Updati ng the Sw itch Softwa re 5 See “Access Con trol Lists” in the “Points to Note when using the Switch 3226 an d Switch 3250” section of thi s document for further det ails.
6 S UPER S TACK ® 3 S WITCH 3226 AND S W ITCH 3 250 S OFTWARE V ER SION 1. 02 R ELEASE N OTES 11 Sele ct SoftwareUp grade . 12 Enter the IP address of t h e TF TP server connected to the Switch . 13 Enter the upgrade fil e name. a The messag e will appear , ' Software Upgrade in progress.
Poi nts t o Note w hen u si ng the Swi tch 3226 and S wit ch 3250 7 3Com recommends that y ou set in dividual ports that ar e to be members o f an a ggregat ed l ink t o the same VLAN me mbershi p. This ensu res co mmunication between al l VLANs a t all time s.
8 S UPER S TACK ® 3 S WITCH 3226 AND S W ITCH 3 250 S OFTWARE V ER SION 1. 02 R ELEASE N OTES No more ports may be added to aggregated link. Y ou should ch eck the configuration of the following items on the physical port ■ port security is di sabled on the port.
Poi nts t o Note w hen u si ng the Swi tch 3226 and S wit ch 3250 9 This message can be caused by one of the follow ing situ at io ns: ■ if there a re more than14 routes whose next hop is not t he default gateway .
10 S UPER S TACK ® 3 S WITCH 3226 AND S W ITCH 3 250 S OFTWARE V ER SION 1. 02 R ELEASE N OTES ■ The ACL which is being bound h as more rules than can be accomm odated by th e hardware. The number rules avail able depend s o n the port ty pe: ■ 10/100 Ports - At least 1 5 rules pe r port ■ 10/100/1000 Ports - Maximum of 2 rules per port.
Poi nts t o Note w hen u si ng the Swi tch 3226 and S wit ch 3250 11 minimum sam pling p eriod o f 10 seco nds and a minimum hysteresis of 20%. SS H Manage ment ■ The SSH serv er in the unit w ill rejec t all connec tion requests unless the unit has a S SH host key .
12 S UPER S TACK ® 3 S WITCH 3226 AND S W ITCH 3 250 S OFTWARE V ER SION 1. 02 R ELEASE N OTES default gateway setting to be l ost. Y ou s hould always chec k the IP add r ess an d r oute configuration when restoring the configuration on another uni t.
Poi nts t o Note w hen u si ng the Swi tch 3226 and S wit ch 3250 13 Comb inatio n Po rts ■ The two 10/100/ 1000 ports a re combination ports. When an SFP module is inserted it has priority o ver the 10/100/100 0 port of t he same numbe r . The corr esp onding 10/100 /1000 port is di sab led.
14 S UPER S TACK ® 3 S WITCH 3226 AND S W ITCH 3 250 S OFTWARE V ER SION 1. 02 R ELEASE N OTES Known Inter opera bility Issu es ■ An in com pa tibil it y e xists wh en ch an g ing link spe ed from 10 M bps ha lf dupl ex to 100 Mbps half duplex.
An important point after buying a device 3Com 3250 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought 3Com 3250 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data 3Com 3250 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, 3Com 3250 you will learn all the available features of the product, as well as information on its operation. The information that you get 3Com 3250 will certainly help you make a decision on the purchase.
If you already are a holder of 3Com 3250, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime 3Com 3250.
However, one of the most important roles played by the user manual is to help in solving problems with 3Com 3250. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device 3Com 3250 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
