At 11:52 AM 8/20/2010, Xavier HUMBERT wrote:
vlan3: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: Chateau
options=3<RXCSUM,TXCSUM>
ether 00:e0:81:2d:62:3e
inet 10.75.2.251 netmask 0xffffff00 broadcast 10.75.2.255
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
vlan: 30 parent interface: bge0
vlan4: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: VoIP
options=3<RXCSUM,TXCSUM>
ether 00:e0:81:2d:62:3e
inet 10.75.3.251 netmask 0xffffff00 broadcast 10.75.3.255
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
vlan: 100 parent interface: bge0
Destination Gateway Flags Refs Use Netif Expire
default 10.75.2.1 UGS 0 13742 vlan3
192.168.1.0/24 link#9 U 5 234765 vlan0
172.16.214.0/24 link#10 U 4 395054 vlan1
192.168.0.0/24 link#11 U 1 4659 vlan2
10.75.2.0/24 link#12 U 0 3361 vlan3
10.75.3.0/24 link#13 U 0 2716 vlan4
------------------------------------------------------------------------
The problem is that, from the gateway itself, I can "see" all devices on all
vlans (nmap proves this). But from my station (which is on the vlan
#10), I can
access on my own vlan, and the default vlan #1. A ping or traceroute
to another
machine - I tried the defaul_router, which as you can see is on vlan #30 -
fails miserably. Tcpdump is not very helpful :
------------------------------------------------------------------------
[xav...@imac-xav ~]$ traceroute 10.75.2.1
traceroute to 10.75.2.1 (10.75.2.1), 64 hops max, 52 byte packets
1 gateway (172.16.214.251) 0.697 ms 0.227 ms 0.245 ms
2 * * *
I dont understand, why is 10.75.2.1 going out your default interface
? It should look for packets on the same subnet that the vlan3 interface is on
Can you do an
arp -na
and
netstat -Wnra
On the nortel switch, are you sure you have it on the equiv of a
"trunk" port? Is there a way to see what MAC addresses the switch
sees as part of what VLAN ?
Is the bad cksum relevant ?
Not necessarily. It might be due to the chksum offloading of the NIC driver.
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, m...@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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