Bug 1168 – BridgeNetDevice: Default ExpirationTime not realistic

Bug 1168 - BridgeNetDevice: Default ExpirationTime not realistic


Summary:	BridgeNetDevice: Default ExpirationTime not realistic

Status:	RESOLVED FIXED

Product:	ns-3
Classification:	Unclassified
Component:	bridge
Version:	ns-3-dev
Hardware:	All All

Importance:	P5 minor
Assigned To:	Gustavo J. A. M. Carneiro

URL:
Keywords:

Depends on:
Blocks:
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Reported:	2011-05-20 10:35 EDT by Gustavo J. A. M. Carneiro
Modified:	2011-08-18 12:13 EDT (History)
CC List:	2 users (show)

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Description Gustavo J. A. M. Carneiro 2011-05-20 10:35:02 EDT

When I wrote BridgeNetDevice for some reason I was convinced there was nothing about default values in the standard, but I just discovered I was wrong:

    .AddAttribute ("ExpirationTime",
                   "Time it takes for learned MAC state entry to expire.",
                   TimeValue (Seconds (30)),
                   MakeTimeAccessor (&BridgeNetDevice::m_expirationTime),
                   MakeTimeChecker ())

The standard 802.1D-2004 says in page 44 sec. 7.9.2:

Parameter: Ageing Time
Recommended default value: 300.0 s
Range: 10.0–1 000 000.0 s

We should probably fix ns-3 to be more aligned with the standard.

Comment 1 Tom Henderson 2011-08-09 16:32:49 EDT

+1

Comment 2 Gustavo J. A. M. Carneiro 2011-08-18 12:13:52 EDT

changeset:   7452:5ad2cbe1d2f6
tag:         tip
user:        Gustavo J. A. M. Carneiro  <gjc@inescporto.pt>
date:        Thu Aug 18 17:13:33 2011 +0100
summary:     Bug 1168 - BridgeNetDevice: Default ExpirationTime not realistic