Link Budget for Aironet 1550EU point-to-multipoint bridge

We have six remote building near our main office. Is it possible to use a single Aironet 1550EU as the root bridge for point-to-multipoint links to six Aironet 1530E on each building? The datasheet for Aironet 1550EU states that it support three 5Ghz antenna and three 2.4 Ghz antenna.
The remote buildings are within 1 km radius of the main building with LOS. We are using the following link budget for our calculation. Our target bandwidth is 24 Mbps. Please correct me if my number is incorrect. I am quite new to wireless network.
Regulatory Domain: America
Link Margin: 5 dBm
Cable link loss: 2 dBm
Antenna Gain for both 2.4Ghz and 5Ghz links: 13 dBi Patch Antenna
Max Tx Power of 1550EU for 802.11g and 802.11a with 13 dBi antenna : 20 dBm (smallest Max Tx power on channels)
Rx Sensitivity of 1550EU and 1530E for 802.11a and 802.11g @ 24 Mbps: -81dBm
Max Range for 5 Ghz @ 24 Mbps = 4.78 km
Max Range for 2.4 Ghz @ 24 Mbps = 9.95 km
I am using the formula on this page. The result is very similar to Bridge Range Calculator from Cisco. Is my calculation correct?
Thanks
Reference:
Aironet 1530 Data Sheet: http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-1530-series/data_sheet_c78-728356.html
Aironet 1550 Data Sheet: http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-1550-series/data_sheet_c78-641373.html
Aironet 1550 Max Tx Pwr: http://www.cisco.com/c/dam/en/us/td/docs/wireless/access_point/channels/lwapp/reference/guide/1550pwr_chn_7dot3.pdf

I was going to have the same concern as you about using the 1232 for both bridging and client serving. Tying a bridge and an AP back to back is a valid configuration from what I have heard. I haven't had the opportunity to try it, though. I know that Cisco says tying 2 bridges back to back to serve as an intermediate bridge hop is a valid configuration, so I don't see why this would be any different.

Similar Messages

Aironet 1400 Point to Multipoint Bridging

Hello Everybody
I`m already desinging a Wireless Point to Multipoint Bridging with Aironet 1400. I was Wondering if on the Central point the 1400 should has a external omnidireccional anntena to support all the others bridges... that is: this AP will be the multipoint bridge.
Could I use all the 1400 AP with integrated anntenas and get that the Central AP work in a multipoint configuration?
Thanks in advance.

Hi,
Cisco Aironet 1400 has a model with integrated 22.5 dBi patch array antenna, the AIR-BR1410A-A-K9.
The integrated radio and high-gain integrated patch array antenna is used in point-to-point links and the non-root nodes of point-to-multipoint networks.
You can (need to) use the external omnidirectional AIR-ANT58G9VOA-N antenna type for your N-type root bridge unit (AIR-BR1410A-A-K9-N).
Basically, these models are ideal for each other in both point-to-point & point-to-multipoint connectivity scenarios.
Cisco 1400 N-type is recommended to use the following external antenna type:
* 9.0 dBi vertically polarized omni antenna --> you need this
* 9.5 dBi sector antenna with support for vertical or horizontal linear polarization
* 28.0 dBi dish antenna with support for vertical or horizontal linear polarization
ref: http://www.cisco.com/en/US/partner/products/hw/wireless/ps5279/products_data_sheet09186a008018495c.html
Aironet 1400 Bridge Ref:
http://www.cisco.com/en/US/partner/products/hw/wireless/ps5279/prod_technical_reference09186a0080184933.html
Rgds,
AK

Bandwith on a Point-to-Multipoint Bridges

Hello everybody..
I`m already designing a point-to-multipoint bridging with Aironet 1300. On the central site I have a omnidirectional antenna and on the remote site integrated antenna. The question is: How much bandwith could I get if my topology is 1 central site a 5 remotes sites?
Does the 54Mbps bandiwith is share between 5 point or does each one could get 54 Mbps.?
Thanks in advance...

Hi Edgar,
Have a look at the following excerpt;
Point-to-Multipoint Bridging
In a point-to-multipoint configuration, two or more non-root bridges associate to a root bridge. Up to 17 non-root bridges can associate to a root bridge, but the non-root bridges must share the available bandwidth.
From this doc;
Cisco Aironet 1300 Series Outdoor Access Point/ Bridge
http://www.cisco.com/en/US/products/ps5861/products_configuration_guide_chapter09186a008021e5ca.html#wp1034650
Hope this helps!
Rob
Please remember to rate helpful posts.........

Aironet 1310 Point to Multipoint Configuration.

According to the installation manual in a point to multi point configuration one device should be a root-bridge a the others must be non-root bridge. This is working fine. From the root bridge I can see the true CDP and ping the other devices. with out any problem. Even Http and set up the non-root bridge?s configuration.
The problem begins when I am trying to ping from a non-root bridge to another non-root bridge and have access to the resources in that side of the Lan.
The ip Addressing scheme seems to be fine , all the devices are in the same sub-net. Know what am I missing in the configuration of the root bridge so he can permit the communication between all non-root bridges?
TKS

I didnt have the time to check your configuration but I can give you a link that mind help you. I try it as point to multipoint and i could ping between the two non root aironet
http://www.cisco.com/en/US/customer/tech/tk722/tk809/technologies_configuration_example09186a008058f53e.shtml

Point to Multipoint Bridge Link

I am currently working on a wireless solution at a campus that has a main building (Bldg A) and two remote buildings (Bldg B & Bldg C). The two remote buildings each have a 1232 access point that provides wireless access to the Internet via Linksys ADSL routers. At Site A there are 5 x 1232 access points providing wireless access to the LAN.
At each remote site the client wishes to discontinue the ADSL service and connect the access points to the main network at Bldg A. Bldg B is 80 metres from Bldg A and Bldg C is 30 metres from Bldg A. Bldg B & C are both in a 30deg beamwidth of the antenna at Site A. There is no Ethernet cabling connecting the sites so a bridge link will be required. The client requires a voice grade WLAN.
I am proposing the following solution
- BR1310 bridge with integrated antenna at Bldg A (root bridge) or a directional antenna such as a yagi or sector antenna.
- BR1310 bridge with Omni-directional antenna mounted on the roof of Bldg B (non-root bridge) associating to the root bridge at Bldg A
- Existing 1232 AP with 2.2dBi dipole antenna at Bldg C (non-root with clients) associating to the root bridge at Bldg A and providing wireless access to clients.
Can anyone advise if I can connect the Ethernet port of 1232 AP at Bldg B to the Ethernet port of the BR1310 (non-root bridge) to provide wireless access to clients via the 1232 AP. My reason for wanting to use the 1232AP is that I am not confident that the Omni-directional antenna will provide adequate signal penetration through the corrugated roofing steel.
Originally I wanted to use 1232AP?s with the ?A radios? providing bridge links and the ?G radios? providing wireless client access but from what I have understand the AP1232 can only be used in point to point configurations.
Thanks for your help.

I was going to have the same concern as you about using the 1232 for both bridging and client serving. Tying a bridge and an AP back to back is a valid configuration from what I have heard. I haven't had the opportunity to try it, though. I know that Cisco says tying 2 bridges back to back to serve as an intermediate bridge hop is a valid configuration, so I don't see why this would be any different.

Troubleshooting Point to Multipoint Wireless Bridge

I have a customer which is a Small RV Park that has Four 1242 Dual Band Access Points with external outdoor antennae.   All 4 APs are configured with a client SSID on the 802.11G radio, and an Infrastructure SSID on the 802.11A radio interface.   The A band is being used for wireless backhaul from the 3 remote APs to a central AP configured as a Root Bridge.   The 3 remote APs are non-root bridges on the A Radio interface.
There are separate antenna on each AP for the 2.4ghz and the 5ghz bands. Directional patch antennae are on the remote APs on the A band pointing to an 5ghz Omni on the Root Bridge. On the 2.4ghz band that the client PCs use, their are either Omni or 180 degree patch antenna on those interfaces.
The issue I am having is keeping all three 802.11A back haul links up at the same time for an extended period.   I moved some of the 1242 APs in the park to get better client coverage, and all three remote radios worked with the backhaul link working at 54mbps. Then I started having issues with one radio dropping its backhaul link, while the other two remotes worked perfectly. Then a second AP backhaul link failed.   I was then able to reconnect the radio I was initially having issues with changing the root bridge channel selection from manual to DFS.
The Second remote AP still has not reconnected, but remote APs 1 an 3 are still up. I have checked the antenna alignment visually, and checked the connectors.   Even swapped out a spare AP. All 1242s are running the last software version put out for that model.
Any suggestions on how to troubleshoot this? When I do a shut/no shut on the dot11radio1 interface, I get a console message that it finds no radio to associate. The Infrastructure SSID has no security on it and open authentication. This is just for free internet access to anyone in the RV Park.

For the point to multipoint configuration follow the steps as per URL which may help you :
http://www.cisco.com/en/US/docs/wireless/access_point/1300/12.3_4_JA/configuration/guide/o13qos.html#wp1069898

Issue with OSPF Point-to-Multipoint over CES Cloud

I'm having an issue running ospf point-to-multipoint over a CES cloud. The reason I want to do this is that not every site has the same bandwidth and this way I can use neighbor statements to specify the cost to each neighbor.
To make this work I have to shut down the cloud facing interface on each node and bring them up one at a time. Everything runs fine until I then shut one of them down and bring it up again, I'm only able to form adjanceis with 2-3 nodes - the other nodes get stuck in either INIT or EXSTART until OSPF give up do to too many retires. If I then repeat the process of shutting down the interface on each node and bringing them back up it works again.
I've tried both " ip ospf network point-to-multipoint" and " ip ospf network point-to-multipoint non-broadcast" with the same results.
Here are the router types involved and the firmware they are running:
1. asr1006 asr1000rp1-adventerprisek9.03.10.00.S.153-3.S-ext.bin
2. asr1006 asr1000rp1-adventerprisek9.03.10.00.S.153-3.S-ext.bin
3. 2821 c2800nm-ipbasek9-mz.151-3.T4.bin
4. 2821 c2800nm-ipbasek9-mz.151-3.T4.bin
5. 2921 c2900-universalk9-mz.SPA.150-1.M1.bin (ipbasek9 license)
6. 2921 c2900-universalk9-mz.SPA.153-2.T.bin (ipbasek9 license)
7. 2821 c2800nm-ipbasek9-mz.151-3.T4.bin
Here is the relevant config from one of the routers:
interface GigabitEthernet1/0/6
description CES
bandwidth 50000
ip address 10.226.126.30 255.255.255.224
no ip redirects
ip flow ingress
ip flow egress
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 blahblahblah
ip ospf network point-to-multipoint non-broadcast
ip ospf dead-interval 3
ip ospf hello-interval 1
load-interval 30
router ospf 1
router-id 10.226.1.9
ispf
auto-cost reference-bandwidth 10000
timers throttle spf 10 100 5000
timers throttle lsa 10 100 5000
timers lsa arrival 80
passive-interface default
no passive-interface GigabitEthernet1/0/6
network 10.226.126.0 0.0.0.31 area 0
neighbor 10.226.126.6 cost 1000
neighbor 10.226.126.5 cost 3333
neighbor 10.226.126.4 cost 3333
neighbor 10.226.126.3 cost 3333
neighbor 10.226.126.2 cost 3333
neighbor 10.226.126.1 cost 200
All the routers have at least one other interface running OSPF point-topoint with no issues. The ASRs also have some stub areas in addition to area 0. I've tried taking the ASRs out of the loop and testing, but the results are the same.
Please let me know if you have any ideas or need more details.
Thanks.

Hi Peter,
believe me: I was perplexed as well and it took me some time to understand what was going on.
I've created a simple gns3 lab (topology attached) with handy IP- and MAC addresses:
R1: 192.168.0.1; 02:00:00:00:11:11
R3: 192.168.0.3; 02:00:00:00:33:33
R4: 192.168.0.4; 02:00:00:00:44:44
The host routes for the point-to-multipoint interfaces play an important role:
R3#show ip route 192.168.0.0
C 192.168.0.0/24 is directly connected, FastEthernet1/0
O 192.168.0.1/32 [110/1] via 192.168.0.1, 00:02:44, FastEthernet1/0
O 192.168.0.4/32 [110/64] via 172.16.34.4, 00:02:44, Serial0/1
Now, with a debug arp enabled on R1 we can see what happens when we shutdown and re-enable Fa1/0.
R1(config-if)#do show ip int brief f1/0
Interface IP-Address OK? Method Status Protocol
FastEthernet1/0 192.168.0.1 YES NVRAM administratively down down
R1(config-if)#do show ip arp
<no output>
R1(config-if)#no shut
IP ARP: sent rep src 192.168.0.1 0200.0000.1111,
dst 192.168.0.1 ffff.ffff.ffff FastEthernet1/0
IP ARP: sent rep src 192.168.0.1 0200.0000.1111,
dst 192.168.0.1 ffff.ffff.ffff FastEthernet1/0
IP ARP: creating incomplete entry for IP address: 192.168.0.4 interface FastEthernet1/0
IP ARP: sent req src 192.168.0.1 0200.0000.1111,
dst 192.168.0.4 0000.0000.0000 FastEthernet1/0
IP ARP: creating incomplete entry for IP address: 192.168.0.3 interface FastEthernet1/0
IP ARP: sent req src 192.168.0.1 0200.0000.1111,
dst 192.168.0.3 0000.0000.0000 FastEthernet1/0
IP ARP: rcvd rep src 192.168.0.4 0200.0000.4444, dst 192.168.0.1 FastEthernet1/0
IP ARP: rcvd rep src 192.168.0.3 0200.0000.4444, dst 192.168.0.1 FastEthernet1/0
IP ARP: rcvd rep src 192.168.0.4 0200.0000.3333, dst 192.168.0.1 FastEthernet1/0
IP ARP: rcvd rep src 192.168.0.3 0200.0000.3333, dst 192.168.0.1 FastEthernet1/0
R1(config-if)#do show ip arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.0.1 - 0200.0000.1111 ARPA FastEthernet1/0
Internet 192.168.0.3 0 0200.0000.3333 ARPA FastEthernet1/0
Internet 192.168.0.4 0 0200.0000.3333 ARPA FastEthernet1/0
R1(config-if)#do show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
4.4.4.4 0 INIT/ - 00:00:16 192.168.0.4 FastEthernet1/0
3.3.3.3 0 FULL/ - 00:00:16 192.168.0.3 FastEthernet1/0
OSPF: Rcv hello from 4.4.4.4 area 0 from FastEthernet1/0 192.168.0.4
OSPF: Send immediate hello to nbr 4.4.4.4, src address 192.168.0.4, on FastEthernet1/0
OSPF: Send hello to 192.168.0.4 area 0 on FastEthernet1/0 from 192.168.0.1
OSPF: End of hello processing
Because of the hostroute to R4, R3's proxy ARP answeres an ARP request for R4 (the same happens on R4)! At this point we have IP connectivity to R4 (via R3) but this doesn't work for OSPF's link local traffic.
So just for the fun of it, we could configure a static ARP entry to verify if that will fix the problem:
R1(config)#arp 192.168.0.4 0200.0000.4444 arpa
%OSPF-5-ADJCHG: Process 1, Nbr 4.4.4.4 on FastEthernet1/0 from LOADING to FULL, Loading Done
R1(config)#no arp 192.168.0.4 0200.0000.4444 arpa
IP ARP: creating incomplete entry for IP address: 192.168.0.4 interface FastEthernet1/0
IP ARP: sent req src 192.168.0.1 0200.0000.1111,
dst 192.168.0.4 0000.0000.0000 FastEthernet1/0
IP ARP: rcvd rep src 192.168.0.4 0200.0000.4444, dst 192.168.0.1 FastEthernet1/0
IP ARP: rcvd rep src 192.168.0.4 0200.0000.3333, dst 192.168.0.1 FastEthernet1/0
Or we could avoid that R3 installs an OSPF hostroute to 192.168.0.4.
R3(config)#ip prefix-list NO-HOSTROUTES deny 192.168.0.0/24 ge 32
R3(config)#ip prefix-list NO-HOSTROUTES permit 0.0.0.0/0 le 32
R3(config)#router ospf 1
R3(config-router)#distribute-list prefix NO-HOSTROUTES in
R3(config-router)#do show ip route 192.168.0.4
Routing entry for 192.168.0.0/24
Known via "connected", distance 0, metric 0 (connected, via interface)
R1(config)#do clear ip arp 192.168.0.4
IP ARP: sent req src 192.168.0.1 0200.0000.1111,
dst 192.168.0.4 0200.0000.3333 FastEthernet1/0
IP ARP: creating incomplete entry for IP address: 192.168.0.4 interface FastEthernet1/0
IP ARP: sent req src 192.168.0.1 0200.0000.1111,
dst 192.168.0.4 0000.0000.0000 FastEthernet1/0
IP ARP: rcvd rep src 192.168.0.4 0200.0000.4444, dst 192.168.0.1 FastEthernet1/0
%OSPF-5-ADJCHG: Process 1, Nbr 4.4.4.4 on FastEthernet1/0 from LOADING to FULL, Loading Done
An interesting detail is the destination MAC address in the first request. Seems like the MAC address of the former ARP entry was still cached somewhere.
The adequate solution to solve the problem is of course disabling proxy-ARP.
I was quite surprised to see that that the protocol logic obviously ignores the fact of being in the same subnet but rather simply check if there is another entry for the requested host in the routing table.
The sanity checks section of RFC 1027 says
"An ARP subnet gateway implementation must not reply if the physical networks of the source and target of an ARP request are the same."
and it seems to me that IOS has not implemented this check. I'm looking forward to hear your opinion!
Thanks for joining,
best regards
Rolf

Dynamic VLAN Assignment with RADIUS Server and Aironet Access Points

Hi Guys,
I would like to go for "Dynamic VLAN Assignment with RADIUS Server and Aironet Access Points 1300". I want the AP to broadcast only 1 SSID. The client find the SSID ->put in his user credential->Raudius athentication->assign him to an specific vlan based on his groupship.
The problem here is that I don't have a AP controller but only configurable Aironet Access Points 1300. I can connect to the radius server, but I am not sure how to confirgure the AP's port, radio port, vlan and SSID.
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008076317c.shtml#switch
I go through some references:
3.5 RADIUS-Based VLAN Access Control
As discussed earlier, each SSID is mapped to a default VLAN-ID on the wired side. The IT administrator may wish to impose back end (such as RADIUS)-based VLAN access control using 802.1X or MAC address authentication mechanisms. For example, if the WLAN is set up such that all VLANs use 802.1X and similar encryption mechanisms for WLAN user access, then a user can "hop" from one VLAN to another by simply changing the SSID and successfully authenticating to the access point (using 802.1X). This may not be preferred if the WLAN user is confined to a particular VLAN.
There are two different ways to implement RADIUS-based VLAN access control features:
1. RADIUS-based SSID access control: Upon successful 802.1X or MAC address authentication, the RADIUS server passes back the allowed SSID list for the WLAN user to the access point or bridge. If the user used an SSID on the allowed SSID list, then the user is allowed to associate to the WLAN. Otherwise, the user is disassociated from the access point or bridge.
2. RADIUS-based VLAN assignment: Upon successful 802.1X or MAC address authentication, the RADIUS server assigns the user to a predetermined VLAN-ID on the wired side. The SSID used for WLAN access doesn't matter because the user is always assigned to this predetermined VLAN-ID.
extract from: Wireless Virtual LAN Deployment Guide
http://www.cisco.com/en/US/products/hw/wireless/ps430/prod_technical_reference09186a00801444a1.html
==============================================================
Dynamic VLAN Assignment with RADIUS Server and Wireless LAN Controller Configuration Example
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008076317c.shtml#switch
==============================================================
Controller: Wireless Domain Services Configuration
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuration_example09186a00801c951f.shtml
Any help on this issue is appreicated.
Thanks.

I'm not sure if the Autonomous APs have the option for AAA Override. On the WLC, I can go into the BSSID, Security, Advanced, and there's a checkbox that I would check to allow a Radius server to send back the VLAN.
I did a little research and it looks like the 1300 may give this option but instead is defined as "VLAN Override". I've found the release notes for 12.3(7)JA5 (not sure what version you're running) that give mention and a link to configuring EAP on page 4: http://www.ciscosystems.ch/en/US/docs/wireless/access_point/1300/release/notes/o37ja5rn.pdf
Hope this helps

Missing Functionality -where do I set a budget for a Project?

Budgeting for Projects is non - existent
Budget for Profit and Loss for a particular project , How is it done ?
Does not work , No facility to put in Budget for a project ?
The report I am trying to run is:
REPORTS>FINANCIAL>BUDGET REPORTS>Profit and Loss Statement Budget Report.Then go to Expanded and choose a PROJECT, say MailOrder.
The result is that it will show the MailOrder project for the ACTUAL but it will show the whole company Turnover against the BUDGET column.
This is because there is no place to set a budget for MailOrder Project in the first place. So the question is where do I set a budget for a Project?
1 Budget setup screen - this has no facility to setup a budget for a PROJECT
2.Budget Profit and Loss - this has the facility to run a PROJECT budget but the figures for the Budget cannot be right because they were not setup in the first place.
PS MailOrder project is just an example.
Version: SAP BUSINESS ONE 2007 A Patch Level 41
Description of requirements: As above
(Valid as of: (Date that this legal requirement is applicable) N/A
Business needs: Customer cannot set the budget for a project and this effects their accounting.
Examples: (Please describe a typical example, how the functionality should work.)
Current Workaround: None.
Proposed solution: Create a Project and then be able to set a Budget for it
Edited by: Darpal Thiarha on May 14, 2008 10:34 AM

Hi Darpal/Kerstin
Please ignore my previous replies because I have now worked out why this idea will not work:
Kerstins' idea is based on setting up new Nominal Codes for every Project and for Every Nominal Code in the Profit and Loss structure. Apart from the fact that this will create a messy Nominal Structure with hundreds of Nominal Codes, the main issue here is the way the Cost Of Goods Sold is structured. The logic of our Nominal Structure for Sales and Cost of Goods is based on Item/Item Groups and the Nature of these Items. In our case we sell Skin Care products under 3 Brands. Say Brand A, B and C
So Brand A is summarised into one item Group and the ITEM GROUP is coded to Sales Nominal 20000 and the Cost of this group is coded to Nominal 30000. In Kertins suggestion, I would need to raise a Nominal Code 20001 for say Project Mail Order and 30001 for the Cost of Goods for Mail Order but this the Mail Order project is selling ALL our brands (A,B,C) - so you can see the problem here. You cannot use Nominal Codes for two different purposes and make it work. So the problem here is that my BRAND A summary will contain a Nominal with a Project Mail Order, that has SALES of Brand A,B,C. The Net effect will be that we will not be able to summarise anything in SALES and Cost of SALES in a logical way (Neither by Brand or By Project) and the Nominal Structure will be a mess.
My conclusion is that SAP b1 Sales and Cost of Goods section demands certain logic when building the Nominal Codes, and this is based on the NATURE OF THE STOCK ITEM and trying to superimpose the PROJECT issue into this, will never work. In my view, the PROJECT issue needs to be sorted without involving New Nominal codes and the starting point would be in sorting out the SALES and COST of SALES and the project Budget for this.
Please let me know if you need further illustration of the problem.

Hi,When I submit the budget for approval, it is approved and base lined when we submit it for approval. It does not go in approval hierarchy. We want it to flow through approval hierarchy.

Hi,When I submit the budget for approval, it is approved and base lined when we submit it for approval. It does not go in approval hierarchy. We want it to flow through approval hierarchy.

Hi Amit,
if I understand correctly, you just need for a particular object a tooltip to be showed.
There is no such functionality hence you used the trick of using a hyperlink, which if clicked generates undesired behavior.
Hyperlinks don't allow themselves to be disabled, therefore if you are using that workaround you must cope with that.
I would suggest to create an Idea at [https://ideas.sap.com] for having in the properties of an object a tooltip, then post the link to the idea here and other users will vote if they like the idea.
Thanks and regards,
Simone

Is it possible to make links in PS Photo Gallery point to original images?

I want to be able to make links in Photoshop Photo Gallery point to the original tif image for download, rather than to the large jpg. Is this doable?
CS 4
Macintosh G5
OS 10.4.11

Do you mean Web Galleries (Bridge) or Web Photo Gallery (the optional plug-in)?

Database link works for OS user "oracle" but not for other clients

My DBA connects as user1 to db1 and successfully queries over database link db2.
[oracle@linux19 ODA]$ sqlplus user1/****@db1
SQL*Plus: Release 11.2.0.3.0 Production on Fri Apr 12 07:39:49 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> SELECT * FROM DUAL@db2;
D
XI log in from a Windows XP client and test the same database link with a ORA-12154 result.
C:\>sqlplus user1/****@db1
SQL*Plus: Release 11.2.0.1.0 Production on Fri Apr 12 11:18:18 2013
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> SELECT * FROM DUAL@db2;
SELECT * FROM [email protected]
ERROR at line 1:
ORA-12154: TNS:could not resolve the connect identifier specifiedI can create and successfully use database links by including the full TNS entry in the USING string.
What are some possible causes for the different results?
What additional information might I supply to help troubleshoot?
Thanks very much.
- Doug
Edited by: enquad on Apr 12, 2013 2:56 PM
changed "database link db1" to "database link db2" per comments by SB
Edited by: enquad on Apr 12, 2013 3:00 PM
Changed "user" to "OS user" in subject for clarity

enquad wrote:
Sorry gentlemen and SB, but my question is still not answered. It is a new question, which I have not found answered elsewhere.
To summarize:
SB97025 informs me that db1 is not a database link, but I never said that it was. It is the second database (anonymized as "db2") that is connected to through the database link "db2.mycompany.net".
SB97025 also wonders intriguingly if my DBA and I are we really connecting to the same database when we each connect to user1 on db1. Perhaps the Oracle server and my PC have TNSNAMES.ORA files that lead us to different databases for the same TNS alias? I do not believe this is the case, because my DBA created that user1 and that database link in the db1 database specifically for the purpose of doing this test and I see that same link when I connect to user1 on db1. Unless my DBA is spoofing me by creating user1 in two different databases - only one of which contains a working dblink named db2.mycompany.net - just for the purpose of throwing me off, I would have to conclude that he and I are actually connecting to the same database.There is no reason to "believe" (or not) that "this is the case". The entire point of SB's comment on that was to get you to verify. President Reagan famously said "trust but verify". He never worked as a DBA. I say "don't trust, just verify".
Obviously something is different. And at this point the most likely and easiest to confirm is that you and your DBA really are connecting to the same database, on the same host server, using the same link. And at this point all we really have is to trust your DBAs statement.
>
Ed Stevens reminds me that db1 is acting as a client to db2 and so the solutions to the ORA-12154 are the same as for any client connection as listed on his blog (which I had already read), none of which solve my problem. Rembember, the DBA can use the database link, so by whatever means the TNS lookup is happening when he uses it, the correct connection description is being found. The question is not "why does this stinkin' database link not work"? It does work for the DBA.
Pierre wants to make sure I know that it is the Oracle server's TNSNAMES file that is the important thing, not my client's TNSNAMES file, which is true but not relevant to my problem and I was never so naive. He also says that I could try creating a database link by including the full TNS entry in the USING string, which does work as I had already mentioned in my original post.
Amar asks if my DBA can: sqlplus username/password@db2.
The answer is yes. The dba can use SQL*Plus to connect to db2 from the server hosting db1 and can connect to db1 from the server hosting db2. There is almost nothing my DBA cannot do.
None of the posters addressed the key information in my post, which was the different result my DBA and I get when using the same database link in the same schema on the same database. That AND the fact that my DBA is logged on to Linux Oracle serve as user "oracle" and I am logged in to my PC. Why should it matter to a database link which computer is running SQL*Plus or who the OS user is?
Also the GLOBAL_NAMES parameter is set to FALSE.
- Doug

HT2693 Where d i go if the vendor of an app has no webpage and the support link in the app store points to a nonexisting webpage?

Where d i go if the vendor of an app has no webpage and the support link in the app store points to a nonexisting webpage?
The app does not work and i paid 12$ for it
How do i get either supportor my money back
Thanks
Juerg

Try the 'report a problem' link from your purchase history : log into your account on your computer's iTunes via the Store > View My Account (Store > View My Apple ID on iTunes 11) menu option and you should then see a Purchase History section with a 'see all' link to the right of it ; click on that and you should see a list of your purchases ; find that app and use the 'Report a Problem' link and fill in details about the problem (iTunes support should reply within, I think, about 24 hours).
Some people have had a problem with the 'report a problem' link (it's been taking people to this site on a browser instead of showing a form in iTunes) - if it does that to you then try contacting iTunes support via this page : http://www.apple.com/support/itunes/contact/- click on Contact iTunes Store Support on the right-hand side of the page.

Point to multipoint with AP 1230AG

Hello,
I want to do this configuration:
Site A must be connected to site B and to site C. On the site A there is an AP 1230AG, it's configured in bridge mode in point to multipoint to site B and C in 802.11A.
On the site B there is an AP 1230AG, it's configured in bridge mode in point to point to the site A in 802.11A, and it's configured in access point in 802.11G for laptops.
On the site C there is an AP 1230AG, it's configured in bridge mode in point to point to the site A in 802.11A, and it's configured in access point in 802.11G for laptops.
I believe that it's possible to make bridge and access point on the same AP in point to point , but is it possible in point to multipoint with AP 1230AG?
Thanks and regards.

As long as there are dual radios each radio can be configured as both as access point and brdige mode.

Table containing Budget for a given project

Hi Gurus,
I have a requirement to fetch the ROOT LEVEL Budget FOR a given Project.
Can someone Throw some light on the tables involved and how they are linked.
Thanks in Advance
Deepak

I am supposed to fetch Current Budget field in the transaction CJ30 for a given Project.
I didnot find appropriate field in RPSCO for this.
please let me know if there is any.
Regards
Deepak

Link Budget for Aironet 1550EU point-to-multipoint bridge

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