0000.0000.0000 MAC Addresses in ARP Table.

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- ws00sw
  
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posted
18 years ago

Mon, Jun 6, 2005 1:04 PM

Hello all I have this Juniper ERX in my network What i'm worry about are the 0000.0000.0000 MAC Addresses that are present in the Arp Table

Does anyone know why? Regards ws00sw

plc-bras#show ver Juniper Edge Routing Switch ERX-1400 Copyright (c) 1999-YYY5 Juniper Networks, Inc. All rights reserved. System Release: erx_5-3-3p0-8.rel Version: 5.3.3 patch-0.8 [BuildId 3397] (April 8, YYY5

09:11) System running for: 0 days, 10 hours, 54 minutes, 9 seconds (since FRI JUN 03 YYY5 00:24:30 GMT-4)

slot state type admin spare running release slot uptime

---- ------- -------- ------- ----- ----------------- -------------

0 online GE enabled --- erx_5-3-3p0-8.rel 0d10h:43m:19s 1 --- --- --- --- --- --- 2 --- --- --- --- --- --- 3 --- --- --- --- --- --- 4 --- --- --- --- --- --- 5 --- --- --- --- --- --- 6 online SRP-10Ge enabled --- erx_5-3-3p0-8.rel 0d10h:52m:32s 7 standby SRP-10Ge enabled --- erx_5-3-3p0-8.rel --- 8 --- --- --- --- --- --- 9 online OC12Atm enabled --- erx_5-3-3p0-8.rel 0d10h:44m:00s 10 --- --- --- --- --- --- 11 --- --- --- --- --- --- 12 online OC12Atm enabled --- erx_5-3-3p0-8.rel 0d10h:43m:59s 13 --- --- --- --- --- --- Copyright (c) 1999-YYY5 Juniper Networks, Inc. All rights reserved.

plc-bras#sh ip arp | i 0000.0000.0000 Please wait.... YYY.XXX.47.5 21450 0000.0000.0000 ATM9/0.971329 YYY.XXX.230.53 21420 0000.0000.0000 ATM9/0.971174 YYY.84.76.183 21230 0000.0000.0000 ATM12/0.800514 YYY.84.78.111 21250 0000.0000.0000 ATM12/0.1380742 YYY.90.127.101 21390 0000.0000.0000 ATM12/0.1350785 YYY.XXX.62.153 21530 0000.0000.0000 ATM12/0.2180776 YYY.XXX.62.246 21480 0000.0000.0000 ATM12/0.1381051 YYY.XXX.62.247 21480 0000.0000.0000 ATM12/0.1410570

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- Walter Roberson
  
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posted
18 years ago

Mon, Jun 6, 2005 11:41 PM

In article , wrote: :I have this Juniper ERX in my network :What i'm worry about are the 0000.0000.0000 MAC Addresses that are :present in the Arp Table

:Does anyone know why?

This has been discussed in the last couple of days in comp.protocols.tcp-ip

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- ws00sw
  
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posted
18 years ago

Wed, Jun 22, 2005 5:46 PM

Walter, can you please show me the link Thanks Regards

Walter Roberson ha escrito:

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- Walter Roberson
  
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posted
18 years ago

Thu, Jun 23, 2005 1:04 AM

|> :What i'm worry about are the 0000.0000.0000 MAC Addresses that are |> :present in the Arp Table

|> This has been discussed in the last couple of days in |> comp.protocols.tcp-ip

|Walter, can you please show me the link

formatting link

"Can ARP packet have zero or Broadcast address as Soure IP address??" [sic]

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- Thomas Schulz
  
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posted
18 years ago

Thu, Jun 23, 2005 1:27 AM

That discussion was about an IP address of zero. If you are seeing a MAC address of zero, that would be a different situation. If I recall correctly, we once had a problem with a system where the battery holding the ram that contained the MAC address has died. The system tried to use a MAC address of zero, which caused problems. I forget now the exact problems caused.