Displaying 20 results from an estimated 20000 matches similar to: "[Bridge] ARP weirdness"
2005 Oct 19
6
arp flood (offtopic?)
Hi guys,
Sorry if this is a little offtopic, but I was wandering what can one do to
prevent/stop arp flooding ?
Thanks,
Alex
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2007 Dec 05
1
Arp problems I think ...
Please bear with me as I know I have included a lot of detail.
Description
Redhat AS 3
Kernel 2.4.21-47.0.1.ELsmp
eth0 HWaddr 00:07:E9:11:30:76
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
eth0:1 HWaddr 00:07:E9:11:30:76
inet addr:192.168.3.1 Bcast:192.168.3.255 Mask:255.255.255.0
This interface is up but with no IP address
eth1
2008 Mar 07
7
[Bridge] bridge, vlan and *no* stp/bpdu
Hello list,
I've posted here about this before, but I realise that it may have been
assumed that the bridged vlans simply put a switch port in a blocking
state and left my question ignored. So to recap.
I have two tg3 interfaces named 'in' and 'out' and a bridge named 'br0'
My vlan trunk is on the 'in' side of the network, and set as in.2, in.3
... The
2007 Apr 18
2
[Bridge] Question about VLANs, bridges and switches
I have a question about bridges, vlans and switches. We had been using
a bridge to provide filtering between our student labs and the main
network. All the filtering does is check that a known IP matches a known
MAC address, this stops students plugging in laptops and stealing an IP
address. (And yes, we know about the MAC spoofing issues too) The
connection was nice and simple,
2007 Apr 18
5
[Bridge] RFC: [PATCH] bridge vlan integration
Hi,
The attached patches enables the bridge to filter and forward packets
according to their IEEE 802.1q headers. The goals behind this change
include :
- Enable running STP on 802.1q tagged networks. STP packets
must be untagged. It isn't obvious how else to enable STP
with the current bridge and vlan code.
- Add native support for an untagged vlan. Currently an untagged
vlan can
2007 May 24
5
bonding + VLANs -> Oops/panic, no VLAN on 100 Mbit cards [SOLVED]
As the issue concerns both the -user (configuration) and -devel (OOPS),
I''m sending this message to both lists.
Some time ago I complained about two problems:
- VLANs are not working on machines with 100 Mbit cards
- I get a kernel Oops (sometimes panic) when I try to use bonding and
VLANs with Xen
The root of the issue is the same in both cases: VLAN interfaces must
*not* be
2007 May 24
5
bonding + VLANs -> Oops/panic, no VLAN on 100 Mbit cards [SOLVED]
As the issue concerns both the -user (configuration) and -devel (OOPS),
I''m sending this message to both lists.
Some time ago I complained about two problems:
- VLANs are not working on machines with 100 Mbit cards
- I get a kernel Oops (sometimes panic) when I try to use bonding and
VLANs with Xen
The root of the issue is the same in both cases: VLAN interfaces must
*not* be
2015 Jan 26
2
VLAN issue
Thank you everyone.
OK, the mystery deepens, I guess. The machine does need to support several
VLAN's, it is currently on a trunkport (8021q encapsulated), it made it
into the ARP table - which I specifically tested for by physically
unplugging the table, clearing the ARP table and plugging it back in.
The ARP table currently looks like this:
hq#show arp
Protocol Address Age (min)
2007 Apr 18
1
[Bridge] Bridging vlans...
<I apologize if this arrives twice... I sent it first from an
non-subscribed address, don't know if that'll get to the list or not --JJ>
Hi folks,
I have an implementation question regarding bridging on a linux box between
a catalyst trunk port and a cisco 26something w/802.1q subinterfaces.
So right now, there's no vlan trunking going on on the link my bridging
firewall sits
2007 Apr 18
1
[Bridge] Re: Bridge Digest, Vol 31, Issue 6
Hello
You must add first:
vlan (tagged) to eth2
eth2 interface is not tagged by default and not know vlan-s .
It is like a cisco if you have 24 ports in cisco by default all ports
are in vlan1. if you want to do trunk (with vlans) you myst add (vlans)
to this ports (tagged or untagged)
So you can compare that all interfaces in linux by default are in one
vlan(but not tagged). (only for
2007 Apr 18
2
[Bridge] VLAN translation + PVST+
Hello, I am creating a configuration where a Redhat server running
bridge-tools 0.9.5 will be bridging between different VLANs on the same
physical interface (for example: a bridge consisting of eth1.100 and
eth1.110). This physical interface is being connected to modern Cisco
switches running PVST+.
The Cisco switch does not like this configuration as the tags on its
BPDUs are being changed
2007 Apr 18
1
[Bridge] RE: [VLAN] Re: [PATCH/RFC] Let {ip, arp}tables "see" bridged VLAN tagged{I,AR}P packets
-----Original Message-----
>From: Tommy Christensen [mailto:tommy.christensen@tpack.net]
>Sent: Wednesday, October 08, 2003 10:09 AM
>To: Christian Darnell
>Cc: 'Linux 802.1Q VLAN'; Bart De Schuymer; netdev@oss.sgi.com; bridge
>Subject: Re: [Bridge] RE: [VLAN] Re: [PATCH/RFC] Let {ip, arp}tables
>"see" bridged VLAN tagged{I,AR}P packets
>
>
>
>This
2007 Apr 18
7
[Bridge] Passing vlan tagged packets through linux bridge
> Use an Intel pro/100 or pro/1000 driver..they are known to
> work with VLANs.
>
> I guess it's also possible that it's a problem in the
> bridging code, so try the latest kernel
> as well...
I compiled the latest 2.6.19 kernel and tested it with two
3COM 3c905c fast ethernet interfaces which work fine with
vlan 802.1q tagging, but when I have added the eth0 and eth1
2007 Mar 27
2
network redundancy via two nics, two routers?
Hi List,
I'm trying to configure two switches to provide redundancy (i.e. in
case one switch goes down), and am wondering if there is a standard
way to configure a CentOS box to use different gateways in a bonded
interface, depending upon which physical nic is being used?
A bit more detail might help answer the "And why do you want to do
that?" questions...
- Switch 1,
2003 Mar 01
2
Virtual Routers would this work?
Hello all,
I need a virtual firewall/router solution. I''m thinking of a
netscreen 1000 but I want to know if it can be done in Linux.
Here is my idea:
1 Linux box
2 GigE interfaces
1 interface setup with a public IP address ($PUBIP)
1 interface setup with 802.1q VLAN trunking with 100 vlans assigned
($VLAN1-$VLAN100)
a /25 subnet routed to $PUBIP from my core routers
All $VLAN
2007 Jan 18
9
Problem with VLANs on tg3 NICs
I have 3 machines,
T60 thinkpad with e1000 NIC
Dell PowerEdge 2950 with bnx2 NIC
HP DL360 G4P with tg3 NIC
All running xen 3.03 / 2.6.16.29-xen
I have a netbootable image with 2.6.16.29-xenU. This image when it
boots creates a vlan eth0.4002, and then tries to communicate on that
interface to a central server.
On the machines with e1000 an bnx2 NICs, this works fine. On the
2011 Mar 27
2
Vlan trunk/QinQ connected to KVM guest
I am running KVM guests under Redhat 6. I tried to setup a bridge
device to an interface with a vlan trunk connected to a Juniper switch.
On the KVM host, I am able to define vlans and access them via the vlan
trunk. I was not able to access a vlan from the kvm guest connected to
the bridged interface. I believe this would be what is commonly called
QinQ or 802.1ad. Is this possible to do? I
2007 Jul 19
2
How to check an inactive slave in a bond?
I''m using bonding in active-fallback mode to guarantee maximum
availability on some critical servers.
The mii mode is active so I can detect things like dead card and/or
unplugged cable even on the inactive slave.
But how do I check that the inactive slave is properly
configured/connected to the switch/vlan?
I ask this question because it has just bitten me in a part I''ll keep
2009 Aug 11
9
can''t add vlans successfully
Hi,
I want to add 2 vlans by the following steps:
1. add the vlan interfaces:
vconfig add eth0 100 --vlan100
vconfig add eth0 101 --vlan101
2. modify the network-bridge script by the websit,
http://wiki.xensource.com/xenwiki/XenNetworking#head-04ebcc1760dbc4678e83b116afa310dc0612dc39
Comment each time ifup or ifdown commands are executed.The reason
is that ifdown ends with
2007 Apr 18
4
[Bridge] [PATCH/RFC] Let {ip, arp}tables "see" bridged VLAN tagged {I, AR}P packets
Hi all,
The patch below does four trivial changes and one big change
Trivial changes, these are all in br_netfilter.c:
- check ar_pln==4 when giving bridged ARP packets to arptables
- delete unnecessary if in br_nf_local_in
- add more logging for the "Argh" message
- add some brag-comments in the file head comment
Big change: let {ip,arp}tables see VLAN tagged {I,AR}P packets.
This