Hi Dominic, According to my test in last email. (I haven´t read anything recently to say for sure) It only tries the Parent list and nothing else. So if it should scan for other Root Aps, I suppose you have to find the correct MAC for them and put them as second, third parent e.t.c.
The mobile station is to enhance the search time for other available channels (not parents) while the Bridge is moving. Cause when mobile station is not configured the Bridge scans all available channels and if you know that you are only using channels 1 , 6 and 11 then you can tell the Bridge only to scan those channels. That will improve the Bridge roaming time to other channels (other root Aps with different channel) if it wants to roam. Which it would want to if the parent signal is low or signal would be lost. If one of those parents would be reachable on one of those channels, of course the Bridge would connect to parent nr 2 if possible. I suppose even if parent 3 would have greater signal. But the theory and behavior of mobile station Bridge "dessicions" needs to be explored further I guess. So the mobile station command is not excacly meeting the requirement of your question it seems. Cause it has nothing to do with the Parent list. regards. Kristjan -----Original Message----- From: Stalder Dominic [mailto:[email protected]] Sent: 12. febrúar 2011 13:18 To: Kristján Ólafur Eðvarðsson; [email protected] Subject: Re: 2. Question / Workgroup bridge parent command (Stalder Dominic) Hi Kristjan The same I thought though, but what would you configure, if the task would be something like: - Configure the WGB to prefer the parent 1240XXX, but if 1240XXX is not available, the WGB should be able to scan for other root aps Maybe the command "mobile station" would be helpful, but this only forces the WGB to scan for a new parent, before the old parent is lost. But I think, if you configure it in parallel with "parent", then only the parent list is scanned? I will try this on Monday, but maybe someone knows it right here ;-) Regards and have a nice weekend Dominic > Von: Kristján Ólafur E›var›sson <[email protected]> > Datum: Fri, 11 Feb 2011 21:17:25 +0000 > An: "[email protected]" <[email protected]> > Cc: Dominic Stalder <[email protected]> > Betreff: 2. Question / Workgroup bridge parent command (Stalder Dominic) > > 2. Question / Workgroup bridge parent command (Stalder Dominic) > > > Helo Dominic, > > I was happy to refresh my memory on this. I had a Root vs. Repeater setup. It > must be the same. > They key here is to test it if and see if the log gives you feedback > on what you need to know :D And this was the case now. > > The answer according to my test below is: No it won´t try anything else if the > only parent it has is not reachable. > > cannot associate: Not specified parent (from 003a.9969.2c20) > > Im my example I had no parents configured. Then configured a bogus parent MAC > (see output below) and it couldn´t associate to anything. > When I entered the real root AP mac as parent 2, it immitiately associated to > the "old" root. > > RepeaterAP#sh dot11 ass > > 802.11 Client Stations on Dot11Radio0: > > SSID [BOB] : > > MAC Address IP address Device Name Parent > State > 003a.9969.2c20 192.168.1.14 ap1240-Parent RootAP - > Assoc > > RepeaterAP#conf t > Enter configuration commands, one per line. End with CNTL/Z. > RepeaterAP(config)#int dot0 > RepeaterAP(config-if)#parent 1 0000.1111.2222 > RepeaterAP(config-if)# > *Mar 10 18:10:50.447: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to > reset > RepeaterAP(config-if)# > *Mar 10 18:10:50.470: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to > down > RepeaterAP(config-if)# > *Mar 10 18:10:51.447: %LINEPROTO-5-UPDOWN: Line protocol on Interface > Dot11Radio0, changed state to down > RepeaterAP(config-if)# > *Mar 10 18:10:52.445: %LINK-3-UPDOWN: Interface FastEthernet0, changed state > to up > *Mar 10 18:10:52.447: %LINK-3-UPDOWN: Interface BVI1, changed state to down > *Mar 10 18:10:53.445: %LINEPROTO-5-UPDOWN: Line protocol on Interface > FastEthernet0, changed state to up > RepeaterAP(config-if)# > *Mar 10 18:10:53.447: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI1, > changed state to down > RepeaterAP(config-if)# > *Mar 10 18:10:58.976: %LINK-3-UPDOWN: Interface BVI1, changed state to up > *Mar 10 18:10:59.976: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI1, > changed state to up > RepeaterAP(config-if)# > *Mar 10 18:11:00.976: %DOT11-4-CANT_ASSOC: Interface Dot11Radio0, cannot > associate: Not specified parent (from 003a.9969.2c20) > RepeaterAP(config-if)# > RepeaterAP(config-if)#parent 2 003a.9969.2c20 > RepeaterAP(config-if)# > *Mar 10 18:11:37.120: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to > reset > *Mar 10 18:11:37.305: %DOT11-4-UPLINK_ESTABLISHED: Interface Dot11Radio0, > Associated To AP RootAP 003a.9969.2c20 [None WPA PSK] > RepeaterAP(config-if)# > *Mar 10 18:11:37.305: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to > up > *Mar 10 18:11:38.305: %LINEPROTO-5-UPDOWN: Line protocol on Interface > Dot11Radio0, changed state to up > RepeaterAP(config-if)# > *Mar 10 18:11:39.304: %LINK-3-UPDOWN: Interface FastEthernet0, changed state > to down > *Mar 10 18:11:40.304: %LINEPROTO-5-UPDOWN: Line protocol on Interface > FastEthernet0, changed state to down > RepeaterAP(config-if)#do show run int dot0 > Building configuration... > > Current configuration : 338 bytes > ! > interface Dot11Radio0 > no ip address > no ip route-cache > ! > encryption vlan 150 mode ciphers tkip > ! > encryption vlan 1 mode ciphers tkip > ! > ssid BOB > ! > ssid client > ! > parent 1 0000.1111.2222 > parent 2 003a.9969.2c20 > speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 > 48.0 54.0 > station-role repeater > end > > ------------------------------ > > Message: 2 > Date: Fri, 11 Feb 2011 10:27:10 +0000 > From: Stalder Dominic <[email protected]> > To: "[email protected]" > <[email protected]> > Subject: [CCIE Wireless] Question / Workgroup bridge parent command > Message-ID: <c97acd8b.2f19%[email protected]> > Content-Type: text/plain; charset="windows-1252" > > Hi there > > If I have to configure a workgroup bridge with a preferred parent and I > configure the following: > > int dot 0 > parent xxxx.yyyy.zzzz > > Will the WGB even try to associate to any other parent (not specified in the > parent list), when the first parent is not available? Because in the > configuration guide is stated and this is not clear for me, based on the text > below: > > (Optional) Enter the MAC address for the access point to which the workgroup > bridge should associate. > ? You can enter MAC addresses for up to four parent access points. The > workgroup bridge attempts to associate to MAC address 1 first; if that access > point does not respond, the workgroup bridge tries the next access point in > its parent list. > > Regards > Dominic > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > </archives/ccie_wireless/attachments/20110211/91adaf73/attachment-0001.html> > > ------------------------------ > > _______________________________________________ > CCIE_Wireless mailing list > [email protected] > http://onlinestudylist.com/cgi-bin/mailman/listinfo/ccie_wireless > > > End of CCIE_Wireless Digest, Vol 23, Issue 12 > ********************************************* _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
