Date: Wed, 30 Aug 2000 02:25:26 +0900 From: Masachika ISHIZUKA <ishizuka@ish.org> To: freebsd-net@freebsd.org Subject: bridge on FreeBSD 4.1R Message-ID: <20000830022526S.ishizuka@onion.ish.org>
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I want to use bridge on 4.1-RELEASE with the following
kernel options and two fxp NICs.
options IPFIREWALL
options IPFIREWALL_VERBOSE
options BRIDGE
options DUMMYNET
I have two questions.
(1) options IPFIREWALL_DEFAULT_TO_ACCEPT is needed ?
On 4.0R, I think the 'options IPFIREWALL_DEFAULT_TO_ACCEPT'
is needed to pass the non IP packets like ARP. On 4.1R, with
the 'options IPFIREWALL_DEFAULT_TO_ACCEPT', the counter values
of 'ipfw -at list 65535' is not up even when passing ARP packets.
I think the line number of 681 in /sys/net/bridge.c is bypass
the ipfw for non IP packets.
Is it right ?
(2) Arp invalid MAC address once a week or less ?
I use bridge shown as follows.
Backbone #1 Backbone #2
^ ^
| |
+-----+-----+ +-----+-----+
|cisco 7206 | |cisco 7513 |
+-----+-----+ +-----+-----+
| |
------+------------+------------+------
|
|MAC: A1:A2:A3:A4:A5:A6
+-----+-----+
| bridge |
| (4.1R) |
+-----+-----+
|MAC: B1:B2:B3:B4:B5:B6
|
|MAC: C1:C2:C3:C4:C5:C6, IP: 10.1.1.1
+-----+-----+
| client PC |
| (4.1R) |
+-----------+
Normally, the arp tables of cisco 7206 and cisco 7513 are
'10.1.1.1 C1C2.C3C4.C5C6'. But once a week or less, The arp
tables of both cisco routers are '10.1.1.1 B1B2.B3B4.C5C6',
that is the first 4 bytes of MAC address in arp table is invalid.
Are there any one with the same problems ?
Thank you for advice and sorry to my poor English.
--
ishizuka@ish.org
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