Netwatch? -----Original Message----- From: Josh Luthman <j...@imaginenetworksllc.com> Sent: Monday, May 04, 2009 6:06 PM To: Mikrotik discussions <mikrotik@mail.butchevans.com> Subject: Re: [Mikrotik] pseudobridge polled devices question
Looks like you are right: *station-pseudobridge* - wireless station that can be put in bridge. MAC NAT is performed on all traffic sent over the wireless interface, so that it look like coming from the station's MAC address regardless of the actual sender (the standard does not allow station to send packets with different MAC address from its own). Reverse translation (when replies arrive from the AP to the pseudobridge station) is based on the ARP table. Non-IP protocols are being sent to the default MAC address (the last MAC address, which the station has received a non-IP packet from). That means that if there is more than one client that uses non-IP protocols (for example, PPPoE) behind the station, none of them will be able to work correctly Still, you should not have problems with ARP with good links to your stations on wlan2. If you really care about it add netwatch to the rb433 to them every 2 minutes. This will leave the MACs in the ARP table. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 "When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle On Mon, May 4, 2009 at 6:50 PM, David Smith < david.sm...@preferredtechnology.com> wrote: > Yes, but the pseudobridge only presents ONE MAC address to the network site > - it's own. The pseudo then answers as a proxy for any MAC addresses behind > it (the ones in its table). What happens when these entries time out? > WDS would be the switch equivalent, not pseudo. > I cant implement WDS. > ds > > David Smith > > Preferred Technology Solutions > 212 West Spring Valley Rd > Richardson, TX 75081 > Office: 972-331-5610 > Cell: 972-898-2626 > Fax: 972-644-4911 > > > > -----Original Message----- > From: mikrotik-boun...@mail.butchevans.com [mailto: > mikrotik-boun...@mail.butchevans.com] On Behalf Of Josh Luthman > Sent: Monday, May 04, 2009 5:47 PM > To: Mikrotik discussions > Subject: Re: [Mikrotik] pseudobridge polled devices question > > Bridging is more like a switch. Not sure what you mean by NAT for MACs... > > The bridge will learn MACs and, like a switch versus a hub, it will only > send the traffic to the port of which the MAC answered from. > > The MAC table (normally called the ARP table) in every device but Cisco (to > my knowledge) will clear out after 2 minutes or if it answered twice within > that timeout will clear after 10 minutes. > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > "When you have eliminated the impossible, that which remains, however > improbable, must be the truth." > --- Sir Arthur Conan Doyle > > > On Mon, May 4, 2009 at 6:42 PM, David Smith < > david.sm...@preferredtechnology.com> wrote: > > > I am just learning that this may be an issue, so bear with me. > > My understanding of pseudobridge is that it is basically a NAT for MAC > > addresses. > > So, the pseudobridge MAC NAT table would only be populated with MAC > > addresses from devices behind the pseudobridge that had initiated some > sort > > of traffic that went out the bridge. > > If that is the case, then would not the MAC NAT "table" time out, or then > > entries expire after a period of time? BTW, what is the default time, and > > how to populate the table with static entries? > > Thanks for your patience, > > > > David Smith > > > > Preferred Technology Solutions > > 212 West Spring Valley Rd > > Richardson, TX 75081 > > Office: 972-331-5610 > > Cell: 972-898-2626 > > Fax: 972-644-4911 > > > > > > -----Original Message----- > > From: mikrotik-boun...@mail.butchevans.com [mailto: > > mikrotik-boun...@mail.butchevans.com] On Behalf Of Josh Luthman > > Sent: Monday, May 04, 2009 5:35 PM > > To: Mikrotik discussions > > Subject: Re: [Mikrotik] pseudobridge polled devices question > > > > Shouldn't have a problem...if you're really concerned you can put the > MACs > > in staticly but if you have a delay in ARP resolution then you have a > poor > > link. > > > > Josh Luthman > > Office: 937-552-2340 > > Direct: 937-552-2343 > > 1100 Wayne St > > Suite 1337 > > Troy, OH 45373 > > > > "When you have eliminated the impossible, that which remains, however > > improbable, must be the truth." > > --- Sir Arthur Conan Doyle > > > > > > On Mon, May 4, 2009 at 6:32 PM, David Smith < > > david.sm...@preferredtechnology.com> wrote: > > > > > I have a rb433 with (2) 52 radios. > > > > > > One radio (WLAN1) is 802.11a and connects to an ap which is connected > to > > > the default gateway. > > > > > > The other radio (WLAN2) is 802.11bg and allows client access with 1 > > > SSID. > > > > > > WLAN 1 is Station pseudobridge, and WLAN2 is ap-bridge. > > > > > > On the WLAN2 side, the clients consist of 802.11bg to serial terminal > > > servers (up to 5 of them associated). (These are the same as serial to > > > Ethernet, just wifi enabled.)They all have static IP address on the > same > > > subnet as the rest of the network, as is the default gateway. > > > > > > These devices are polled via IP address ONCE every hour from a remote > > > site using a VPN connection to the default gateway. > > > > > > So, using pseudobridge, will I have an issue polling the devices behind > > > the 802.11bg radio since traffic is initiated only on the default > > > gateway side? > > > > > > Will the arp table entries on pseudobridge expire is my concern. > > > > > > Thanks! > > > > > > > > > > > > > > > > > > David Smith > > > > > > > > > Preferred Technology Solutions > > > 212 West Spring Valley Rd > > > Richardson, TX 75081 > > > Office: 972-331-5610 > > > Cell: 972-898-2626 > > > Fax: 972-644-4911 > > > > > > > > > > > > > > > > > > -------------- next part -------------- > > > An HTML attachment was scrubbed... > > > URL: < > > > > > > http://www.butchevans.com/pipermail/mikrotik/attachments/20090504/d668ee30/attachment.html > > > > > > > _______________________________________________ > > > Mikrotik mailing list > > > Mikrotik@mail.butchevans.com > > > http://www.butchevans.com/mailman/listinfo/mikrotik > > > > > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > > > RouterOS > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > http://www.butchevans.com/pipermail/mikrotik/attachments/20090504/7fa6360f/attachment.html > > > > > _______________________________________________ > > Mikrotik mailing list > > Mikrotik@mail.butchevans.com > > http://www.butchevans.com/mailman/listinfo/mikrotik > > > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > > RouterOS > > _______________________________________________ > > Mikrotik mailing list > > Mikrotik@mail.butchevans.com > > http://www.butchevans.com/mailman/listinfo/mikrotik > > > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > > RouterOS > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://www.butchevans.com/pipermail/mikrotik/attachments/20090504/c9df78f5/attachment.html > > > _______________________________________________ > Mikrotik mailing list > Mikrotik@mail.butchevans.com > http://www.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS > _______________________________________________ > Mikrotik mailing list > Mikrotik@mail.butchevans.com > http://www.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS > -------------- next part -------------- An HTML attachment was scrubbed... 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