Strange behaviour of a NAS

[Michael Schwartzkopff]

Hi list,

We see a strange behaviour of a NAS. It sometimes sens out double accouting 
requests. See tcpdump below. Between the two packets there is a time 
difference of 40 microseconds(!)

Has anybody a good explanation for this behaviour of the NAS?
Any other theory? Misconfiguration?

NAS type: Alcatel SMC.

Thanks for any hint.

--- dump ---
17:19:35.903233 IP xxx.206.254.10.17188 > xxx.217.246.173.1813: RADIUS, 
Accounting Request (4), id: 0x9b length: 362
17:19:35.903275 IP xxx.206.254.10.17188 > xxx.217.246.173.1813: RADIUS, 
Accounting Request (4), id: 0x9b length: 362
17:19:35.904208 IP xxx.217.246.173.1813 > xxx.206.254.10.17188: RADIUS, 
Accounting Response (5), id: 0x9b length: 20

These two incomming packets are really identical. Even if you look closer 
with -v option of tcpdump. Same authenticator.
---

-- 
Dr. Michael Schwartzkopff
MultiNET Services GmbH
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