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тАО04-19-2006 02:40 PM
тАО04-19-2006 02:40 PM
i had few DS10 alpha servers wtih OpenVMS version 7-3.1. Every DS10 has 2 ethernet ports and connected to the switch without running any VLAN. my question as below:
1. what type of LAN protocol is being used for DS10?
2. what type commands to issue for checking the DS10 protocol.
Thanks
Solved! Go to Solution.
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тАО04-19-2006 04:47 PM
тАО04-19-2006 04:47 PM
SolutionNormally TCPIP is quite common now, whereas DECnet and LAT are decreasing in usage.
Try $ SHOW NETWORK to have a 1st look.
If you have DECnet, it may be the older Phase IV (managed by MCR NCP) or the newer Phase V (managed by MCR NCL).
For TCPIP there are 2 software packages from HP (the older UCX or the newer TCPIP Services, both may be managed by the UCX command (the newer one supports this command for compatibility reasons) and 2 from other vendors (TCPware and Multinet).
regards Kalle
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тАО04-19-2006 06:43 PM
тАО04-19-2006 06:43 PM
Re: NIC protocol
to see which network procotols are running on each of your LAN adapters, use:
$ ANAL/SYS
SDA> SHOW LAN ! and type
for each LAN adapter, this lists the protocols, which have been started on this adapter. The protocol name in the Client column and the ethernet protocol type in the Value column should be recognisable.
Volker.
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тАО04-22-2006 10:53 PM
тАО04-22-2006 10:53 PM
Re: NIC protocol
i had tried $show network and its shows:
Product : DECnet
Product : TCPware
$show LAN
UCB UCB addr Fmt
EWA0 8149FA00
EWA2 814BB5C0 802E
EWA3 814E9800 Eth
Value Client State
08-00-2B-80-3C DNAME 017STRTN,LEN,UIQ,STRTD
80-3C DNAME 017STRTN,LEN,UIQ,STRTD
FE DECNETV -DO-
My questions as below:
1. what is these stand for eg: UCB,802E,ETH,DNAME,0017 STRTN,LEN,UNIQ,STRTD
2. What command to show the DS10's MTU?
3. How to change the DS10's MTU
Thanks
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тАО04-22-2006 11:06 PM
тАО04-22-2006 11:06 PM
Re: NIC protocol
the partial information you've shown indicates:
you seem to only be running DECnet Phase V protocol on EWA0
You're using TCPware as your TCPIP stack, but it's not running on the LAN interface (EWA0) you've shown in your output or your output is incomplete.
I believe the SDA> SHOW LAN output you've shown is incomplete. Otherwise it would indicate an incompletely configured and/or started network software, both DECnet and TCPIP.
What is the problem you're trying to address ?
Volker.
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тАО04-24-2006 03:22 PM
тАО04-24-2006 03:22 PM
Re: NIC protocol
Volker you are right. there was only partial information i showed because of limited space for me to type.
Actually i wanna to find out what type of LANs protocol are using? I tried to use network analyzer to capture and the result for frame type was ETHERTYPE and the frame network size was 1508(included 4bytes CRC).
1. Why the frame type display ETHERTYPE not DECnet V?
2. If using ETHERTYPE LAN protocol, the MTU should 1498 bytes not more then 1500bytes
2. Does MTU cause not stable if the frame size more then what i had configured?
3. How to configure the MTU in DS10?
thanks
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тАО04-24-2006 05:32 PM
тАО04-24-2006 05:32 PM
Re: NIC protocol
Why do you think you need to change the MTU?
Dave
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тАО04-25-2006 07:04 AM
тАО04-25-2006 07:04 AM
Re: NIC protocol
TCPware can allow you to change the MTU that IP will use on the interface, but that must be done very carefully and must be in agreement with other systems on the LAN.
TCPware most likely will have 2 protocols on the ethernet - TCPIP and ARP.
You can see TCPware's interfaces with $ NETCU SHOW NETWORK.
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тАО04-25-2006 10:42 PM
тАО04-25-2006 10:42 PM
Re: NIC protocol
I would like to suggest, that you read the chapter on LAN Drivers in the OpenVMS I/O User's Reference Manual and especially chapter 9.4.6 LAN Frame Formats
http://h71000.www7.hp.com/doc/82FINAL/aa-pv6sg-tk/aa-pv6sg-tk.PDF
OpenVMS can run many different LAN protocols via the same network card at any time. Each protocol will be shown as a pseudo UCB in SDA> SHOW LAN
Volker.
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тАО04-27-2006 06:49 PM
тАО04-27-2006 06:49 PM
Re: NIC protocol
Dave, you asked why i want to change the MTU? because I found out the frame size that i captured was 1508 bytes when DS10 communicate with other Server but i checked that is only 1500 MTU size in DS10 by commands MCR LANCP > SHOW CONFIG.
Geoff bryant, you are right. must be in agreement with other systems on the LAN if i change the MTU.
So Gentlemen, what should i do if the frame size difference with what i was set in the DS10? And what could happended to the DS10 and other equipment in the network if DS10 transmiting more then 1500 bytes to other equipment?
Volker, thanks for your information about the OpenVMS I/O user reference manual. i already download it.
Thank you every body here to help me out because Im new to the OpenVMS.
hope can hear from you all soon
Wong