| Title: | DEChub/HUBwatch/PROBEwatch CONFERENCE |
| Notice: | Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7 |
| Moderator: | NETCAD::COLELLA DT |
| Created: | Wed Nov 13 1991 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 4455 |
| Total number of notes: | 16761 |
2 Hub900 (HW=F,RO=V1.1.6,SW=V4.0.2) 2 Repeater 900TM (V1.1.0), one each hub, say named A & B No IP address is set on the individual modules in each hub except for the Hub900 itself. Customer reports the following problem : Both repeater have acquired the IP address of another host in the network (20.10.10.8). Customer use the "show current settings" option in the Repeater 900TM menu and it shows that an IP address (20.10.10.8) has been set. That happens on both repeater900TMs. Customer mantains that no person would set that address manually or through SNMP (if that is possible?). That address is used by an HP laserjet printer. When the problem occurs, printing to the printer fails. Customer went to one of the hubs and removed the IP address (20.10.10.8) from the repeater 900tm A. Then, "show current settings" displays that the address has been removed and that it is using the hub900's ip address. Without changing anything on the other repeater 900tm B, "show current settings" now displays that no IP address has been set on it and it is using hub900 ip address!!! However, when customer tries to ping to that ip address and check the arp entry, he found that repeater 900tm B was still responding by checking the arp table entry and finding the 900tm B's mac address. Rebooting the Repeater900TM solves the problem. Nothing in the error logs for hub and repeater. Anyone seen this before? Thanks Dennis
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3235.1 | Bad BOOTP Server? | NETCAD::GALLAGHER | Mon Feb 05 1996 12:05 | 32 | |
I don't know the answer, but may be able to give some clues. DECrepeater900TMs (like all 900-series repeaters) will attempt to get an IP address using the BOOTP (Bootstrap Protocol). They broadcast BOOTP requests. User's can configure BOOTP servers to respond to the request with an IP address. The BOOTP servers are configured with MAC address/ IP address binding so, for example, when repeater 08-00-2b-42-42-42 sends a BOOTP request to server gives it IP address 1.2.3.4. So it seems your customer's repeaters are aquiring IP addresses via BOOTP. Perhaps there's misconfigured BOOTP server on the network? I think the latest versions of firmware allow you to disable BOOTP on the repeaters. (I'll check.) >Rebooting the Repeater900TM solves the problem. BOOTP requests are sent after 1 second, then two seconds later, then 4 seconds, 8, 16....up to 512 seconds. I don't know how rebooting would solve the problem. > Customer maintains that no person would set that >address manually or through SNMP (if that is possible?). No, it's not possible. The only way to set an IP address is thru the setup port or via BOOTP. >Anyone seen this before? Never heard of this one. -Shawn | |||||
| 3235.2 | NETCAD::GALLAGHER | Wed Feb 07 1996 12:19 | 8 | ||
>I think the latest versions of firmware allow you to disable BOOTP on >the repeaters. (I'll check.) Yes, you can disable the device sending BOOTP request thru the set-up port. This is a curious problem. Any progress? -Shawn | |||||
| 3235.3 | more info.... | IAMOSI::LEUNG | Dennis Leung, Sydney CSC | Thu Feb 08 1996 02:32 | 9 |
Re : .2 There is a UNIX bootp server on the network but customer maintains that there is not booptab entries for these repeaters in the booptab file. Anyway, customer has not seen it happen again and we'll take it as a once-off occurrence. Will monitor and see if it re-occurs. Thanks Dennis | |||||