VoIP over satellite link

I configured VoIP on a MPPP with LLQ as a QoS policy in a lab environment, it works fine.
Now I`d like to configure it over a satellite link with 128 Kbps of bandwidth and four channel.
What considerations should I to do in my configurations for it?
Are there some command configs for tunning the QoS in this environment?
I know that the delay between two points through satellite link is 500ms.
Someone has some experience with this case?. I`ll appreciate your suggestions.
Thank you.

hi everybody,
i have an internet connection via sat with the following config:
1. 2Mbps down and 1Mbps up.
2. ps4500 sat modem.
3. 2600XM router.
4. AS5400 gateway.
5. its connected to PSTN.
we have about 100 users that use it for calling through PSTN.
Now we like to conffigure QoS/Diffserv for Voice connection and connect about 200 users for normal internet connection.
can anybody tell me what the consumming B/W for 100 calls and what is the best configuration for this senario.
best redards
eng thaar
oil ministry

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DMVPN QoS Configuration over sat link

Hi everyone, having one of those days where I cant seem to see the trees through the forest! Hopefully someone can point the way :)
We have a DMVPN setup with Hub & spoke, 3 remote sites over satellite but the remote sites internet traffic does not come over the vpn, it goes out via the ISP.
One particular site we've been having flooding and packet loss issues with has now been increased from 256k to a 512Kb Cir and the ISP has allowed a 1536 burst - this is where im confused most!
Almost all examples of QoS i see is to limit/restrict the flow to less than the provider CIR is allowing to avoid them dropping packets, so in this scenario, how do I make the most of the burst rate?
The DMVPN is currently set up with QoS policies via IP nhrp map groups, shaping the tunnel to 256k then child maps prioritizing mgmt, Skype etc. Although this seems like a great idea, im being led to believe I should just have qos pre-classify on the tunnel and set the policy-map on the Internet interface, but what I cant work out is how to prioritize or allocate most of the bandwidth to the tunnel for 'work related' purposes and limiting web browsing as currently it seems http/https traffic it taking all the bandwidth!
If I don't use the bandwidth command on the physical interface it appears it believes it has 100m, so I think I need to set it 512k but not sure how to utilize the burst.
Then im guessing I should use something like priority percent and shape average percent to prioritize tunnel traffic over http but does qos then need to be configured on the Hub somewhere as well?
If anyone has a similar setup and can provide example config that would be great.
Any assistance is greatly appreciated, please let me know if you want any configs/outputs.
Cheers,
Kev

Thanks for the reply Marcin, however that doesn't really answer my question(s).
I am fully aware of per tunnel qos as well as HQos, im just no expert in either!
I understand that per tunnel qos applies the settings to the tunnel, but anything Not going via the tunnel will not have any qos applied and that currently seems to be the issue, naughty streaming media and http/https traffic flooding the link!
Using Hqos will apply to the whole link, but it seems I need qos-pre classify on the tunnel to apply before it gets encrypted, or should I just prioritise all GRE so that all tunnel traffic gets priority?
Perhaps I just have my settings too low, http(s) traffic takes all it can leaving work related tunnel traffic, email etc starved of BW.
If anyone has any example configs of similar setups that would be much appreciated, its easier for me to reverse engineer! :)
cheers,
Kev

DiffServ & TE paths are required to deploy commercial VoIP over a MPLS net.

Dear members.
There's something I'd like to know from those that truly and successfully
implement commercial VoIP over a MPLS infrastructure.
Supporting IP QoS (DiffServ) across the core backbone and/or MPLS traffic-
engineered paths is really required ?
Consider a whole backbone built with high speed throughput connections, plenty of bandwidth availability and no periods of congestion!
I do believe TE tunnels (paths) are necessary for quick recovery when a node
or link fails, but rather them assuming something I haven't experienced yet
I'd like to listen from those who really have already successfully deployed
commercial VoIP.
Best regards.
Murilo Pugliese.

With increasing adoption of voice over IP (VoIP), the landscape for deployment is rapidly changing. Service providers are often driven by the need to provide customers a high grade of service to carry voice traffic across a network. However, today's multiservice packet networks rely on IP-based packet switching. In addition, IP by itself is simply best-effort service that is not sufficient to provide the strict delay, jitter, and bandwidth guarantees required for VoIP and other real-time traffic. Cisco IOS QoS features are ideal for this situation. Using the IETF differentiated services (DiffServ) model for QoS, VoIP traffic can be treated appropriately.
http://www.cisco.com/en/US/netsol/ns341/ns396/ns172/ns155/networking_solutions_white_paper09186a00800a8441.shtml

VOIP over VPN need clarification

Hi,
Recently I have implemented Site-to-Site VPN between ASA and sonic wall firewall.
Problem: I can able to make call from ASA side(inside) Ip phone to sonic wall (inside) side Ip phone and vice versa and it’s ringing, But not able to hear voice. So I created VOIP over VPN configuration and applied appropriate service policy towards outside interface. But still I was not able to hear voice.
Tried below mentioned t’shot steps:
From ASA side we had two subnets (10.20.1.x/24 – Data and 10.20.2.x/24 – Voice ) and one subnet (192.168.x.x/24 ) from sonic wall side as interesting traffic ( lan to lan). When I configured site-to-site configuration on both ends my phase-1 and phase-2 came UP and can able to communicate between each other. (In interesting traffic I created two objects and bind those objects as one object-group for source i.e. ASA side lan subnet and one object for remote-Lan as destination)
My call manager is rest behind ASA and Ip phones needs to communicate from sonic wall side to inside ASA.
I can able to make call from ASA side(inside) Ip phone to sonic wall (inside) side Ip phone and vice versa and it’s ringing, But not able to hear voice. So I created VOIP over VPN configuration and applied appropriate service policy towards outside interface. But still I was not able to hear voice.
So, I done supernetting the data subnet and voice subnet into single network i.e. 10.20.x.x/16 at ASA side and applied the configuration changes (changed ACL, nonat rule, Voice QOS ACL accordingly), and I’m able to hear voice both end and I can communicate properly from ASA inside Ip phone to Sonic wall inside Ip phone and vice versa.
My question: I’m not understanding the logic how this supernetting resolved dead voice issue.
Pls clarify my question I’m bit confused on this.

It's not recommended. Although VPNs guarantee a secure pipe end-to-end, they don't guarantee latency and variations in latency (Jitter).

Execute procedure over db link

I am trying to execute a stored procedure over database link and I get the following error
DBMS_APPLY_ADM.SET_UPDATE_CONFLICT_HANDLER@DBCS(
ERROR at line 12:
ORA-06550: line 12, column 2:
PLS-00306: wrong number or types of arguments in call to 'SET_UPDATE_CONFLICT_HA
NDLER'
ORA-06550: line 12, column 2:
PL/SQL: Statement ignored
However when I execute the same peice of code by logging on to the server the code executes successfully. "DBCS" is the database link name.
CODE which I am executing over DB LINK
DECLARE
COL_NAME DBMS_UTILITY.NAME_ARRAY;
CURSOR C1 IS
SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS WHERE OWNER='SCOTT' AND TABLE_NAME='DEPT';
BEGIN
OPEN C1;
FETCH C1 BULK COLLECT INTO COL_NAME;
CLOSE c1;
DBMS_APPLY_ADM.SET_UPDATE_CONFLICT_HANDLER@DBCS(
OBJECT_NAME => 'SCOTT.DEPT',
METHOD_NAME => 'OVERWRITE',
RESOLUTION_COLUMN => COL_NAME(1),
COLUMN_LIST => COL_NAME);
END;
CODE without DB LINK (executed this on db where db link is pointing too.
DECLARE
COL_NAME DBMS_UTILITY.NAME_ARRAY;
CURSOR C1 IS
SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS WHERE OWNER='SCOTT' AND TABLE_NAME='DEPT';
BEGIN
OPEN C1;
FETCH C1 BULK COLLECT INTO COL_NAME;
CLOSE c1;
DBMS_APPLY_ADM.SET_UPDATE_CONFLICT_HANDLER(
OBJECT_NAME => 'SCOTT.DEPT',
METHOD_NAME => 'OVERWRITE',
RESOLUTION_COLUMN => COL_NAME(1),
COLUMN_LIST => COL_NAME);
END;
Please guide.

orausern wrote:
Hi,
We are on Oracle 11.2.0.2 on Solaris 10. I have two databases on this version of Oracle. From one db I have execute a stored procedure via db link to another database. The store procedure has dynamic sqls (execute immediate) and it uses commit statement as part of the code. Is it alllowed to execute this procedure over db link? I am not aware on the implications on stored proc execution over db link and will be thankful for help.
Thanks,if no error is thrown, why are you looking for problems where none exist?

Interactive report performance problem over database link - Oracle Gateway

Hello all;
This is regarding a thread Interactive report performance problem over database link that was posted by Samo.
The issue that I am facing is when I use Oracle function like (apex_item.check_box) the query slow down by 45 seconds.
query like this: (due to sensitivity issue, I can not disclose real table name)
SELECT apex_item.checkbox(1,b.col3)
, a.col1
, a.col2
FROM table_one a
, table_two b
WHERE a.col3 = 12345
AND a.col4 = 100
AND b.col5 = a.col5
table_one and table_two are remote tables (non-oracle) which are connected using Oracle Gateway.
Now if I run above queries without apex_item.checkbox function the query return or response is less than a second but if I have apex_item.checkbox then the query run more than 30 seconds. I have resolved the issues by creating a collection but it’s not a good practice.
I would like to get ideas from people how to resolve or speed-up the query?
Any idea how to use sub-factoring for the above scenario? Or others method (creating view or materialized view are not an option).
Thank you.
Shaun S.

Hi Shaun
Okay, I have a million questions (could you tell me if both tables are from the same remote source, it looks like they're possibly not?), but let's just try some things first.
By now you should understand the idea of what I termed 'sub-factoring' in a previous post. This is to do with using the WITH blah AS (SELECT... syntax. Now in most circumstances this 'materialises' the results of the inner select statement. This means that we 'get' the results then do something with them afterwards. It's a handy trick when dealing with remote sites as sometimes you want the remote database to do the work. The reason that I ask you to use the MATERIALIZE hint for testing is just to force this, in 99.99% of cases this can be removed later. Using the WITH statement is also handled differently to inline view like SELECT * FROM (SELECT... but the same result can be mimicked with a NO_MERGE hint.
Looking at your case I would be interested to see what the explain plan and results would be for something like the following two statements (sorry - you're going have to check them, it's late!)
WITH a AS
(SELECT /*+ MATERIALIZE */ *
FROM table_one),
b AS
(SELECT /*+ MATERIALIZE */ *
FROM table_two),
sourceqry AS
(SELECT b.col3 x
       , a.col1 y
       , a.col2 z
FROM table_one a
    , table_two b
WHERE a.col3 = 12345
AND   a.col4 = 100
AND   b.col5 = a.col5)
SELECT apex_item.checkbox(1,x), y , z
FROM sourceqry
WITH a AS
(SELECT /*+ MATERIALIZE */ *
FROM table_one),
b AS
(SELECT /*+ MATERIALIZE */ *
FROM table_two)
SELECT apex_item.checkbox(1,x), y , z
FROM table_one a
    , table_two b
WHERE a.col3 = 12345
AND   a.col4 = 100
AND   b.col5 = a.col5If the remote tables are at the same site, then you should have the same results. If they aren't you should get the same results but different to the original query.
We aren't being told the real cardinality of the inners select here so the explain plan is distorted (this is normal for queries on remote and especially non-oracle sites). This hinders tuning normally but I don't think this is your problem at all. How many distinct values do you normally get of the column aliased 'x' and how many rows are normally returned in total? Also how are you testing response times, in APEX, SQL Developer, Toad SQLplus etc?
Sorry for all the questions but it helps to answer the question, if I can.
Cheers
Ben
http://www.munkyben.wordpress.com
Don't forget to mark replies helpful or correct ;)

Report over database link error

Good morning all.
I have a database link LINKA from USERA on LOCALSERVER to USERB on REMOTESERVER.
(create database link LINKA connect to USERB identified by mypassword using validtns)
In USERC on REMOTESERVER I have a TABLEX, with grant all on TABLEX to USERB on REMOTESERVER.
In USERB on REMOTESERVER I have a view TABLEXV, select * from USERC.TABLEX
From USERA on LOCALSERVER I can select * from TABLEXV@LINKA. In fact I can insert/update/delete tablexv from USERA.
I also have a view TABLEXV on USERA, select * from TABLEXV@LINKA. I can also select/insert/update/delete from USERA.TABLEXV.
So far so good - all working as expected.
Then, my APEX app on LOCALSERVER, interactive report, parsing schema USERA, querying TABLEXV, I get the following:
when "Exclude Link Column", I get the error "The requested URL /pls/apex/f was not found on server.
when "Link to Single Row View", report displays correctly.
when "Link to Custom Target", I get the error "The requested URL /pls/apex/f was not found on server.
When I run the select * from TABLEXV as a regular report (i.e. not interactive), I also get the error.
So the only time I get the report displayed correctly is using IR and "Link to Single Row View".
However, clicking on the link (for Single Row View) I get "The requested URL /pls/apex/wwv_flow.show was not found on this server.".
To summarize:
- accessing table via view over database link
- works outside of apex without issue
- inside only works when Link to Single Row View set
- But clicking on link fails
I could live with just having the Link to Singe Row View option if I could disable displaying of the icon so that the user cant click on it.
APEX 3.2.00.27
EE Database - 10.2.0.3 (yes I know out of support)
Remote EE Database - 10.2.0.5
Real object names replaced to protect the innocent!
Anyone got any clues?
I have used remote tables many times in my APEX applications and never had this issue.
Thanks,
Rob @ very confused .com

Good morning all.
I have a database link LINKA from USERA on LOCALSERVER to USERB on REMOTESERVER.
(create database link LINKA connect to USERB identified by mypassword using validtns)
In USERC on REMOTESERVER I have a TABLEX, with grant all on TABLEX to USERB on REMOTESERVER.
In USERB on REMOTESERVER I have a view TABLEXV, select * from USERC.TABLEX
From USERA on LOCALSERVER I can select * from TABLEXV@LINKA. In fact I can insert/update/delete tablexv from USERA.
I also have a view TABLEXV on USERA, select * from TABLEXV@LINKA. I can also select/insert/update/delete from USERA.TABLEXV.
So far so good - all working as expected.
Then, my APEX app on LOCALSERVER, interactive report, parsing schema USERA, querying TABLEXV, I get the following:
when "Exclude Link Column", I get the error "The requested URL /pls/apex/f was not found on server.
when "Link to Single Row View", report displays correctly.
when "Link to Custom Target", I get the error "The requested URL /pls/apex/f was not found on server.
When I run the select * from TABLEXV as a regular report (i.e. not interactive), I also get the error.
So the only time I get the report displayed correctly is using IR and "Link to Single Row View".
However, clicking on the link (for Single Row View) I get "The requested URL /pls/apex/wwv_flow.show was not found on this server.".
To summarize:
- accessing table via view over database link
- works outside of apex without issue
- inside only works when Link to Single Row View set
- But clicking on link fails
I could live with just having the Link to Singe Row View option if I could disable displaying of the icon so that the user cant click on it.
APEX 3.2.00.27
EE Database - 10.2.0.3 (yes I know out of support)
Remote EE Database - 10.2.0.5
Real object names replaced to protect the innocent!
Anyone got any clues?
I have used remote tables many times in my APEX applications and never had this issue.
Thanks,
Rob @ very confused .com

Mouse-over a link

when i mouse-over a link, i can see where that link brings me in the lower left corner. but when i enable the search (shift+f), the links are in the lower RIGHT corner. why? its really embarassing for example on facebook, because the chat windows can be found at the lower right corner, right where are these "links". can i change it some way? thanks in advance!

You can use this extension to change that behavior:
* Status-4-Evar: https://addons.mozilla.org/en-US/firefox/addon/status-4-evar/

Mouse over HTML link causes single frame to display at top of page Netscape only

Having a wierd problem. When you run the mouse over HTML
links on the page a single frame of the flash movie apears at the
top center of the page. It only happens in netscape in firefox
mode. IE, Opera, and Firefox do not have the problem.
Problem site
Thanks in Advance,
Vorsch

The problem goes away if i modify my .css file by removing
the
border: 1px solid #999999;
line from the "a:hover" style.
I ran my css file thru the validator at w3c and its fine. The
Page also validates as xhtml transitional.
and just a note the same file version is on my public server
and my testing server.
Has anyone ever seen this before?? I have several sites with
a:hover effects and flass media and have never run across this
before.

In WebHelp, when I mouse over a link, the font size changes.

Either after I generate to WebHelp or View in RoboHelp, when I mouse over a hyperlink text, the font changes from large to small text. My step is a 11pt font, my body text is 10pt. It appears the 11 pt. font switches to 10pt font when I mouse over it. Any way to fix this?
Also noticed that when I have a note at 9 pt, and mouse over a link, the text changes to 10pt.
So now it appears in most of my topics with links within a step or note. In a body, the text appears fine (or stays the same) when you mouse over a link.

Not believing that either.
You should be able to edit your CSS in a text editor. If you are not sure what to do, set up a simple project using your CSS. Any text will do and create a link.
See the Contact page on my site and follow the instructions there.
See www.grainge.org for RoboHelp and Authoring tips
@petergrainge

I want to know how to get the web addresses to go away that appear in the bottom left corner of the browser every time my mouse goes over a link

Any time that my mouse goes over a link on a web page a little box in the bottom left corner of the browser pops up showing the web address for that link and it is really annoying, especially when i am on facebook because there are so many links on the home page i cant move my mouse anywhere without that box popping up and blocking part of my conversations. I was wondering if there was any way to turn this off. I've checked through the options and to my knowledge there is no way to turn it off. Just wondered if anyone else has had this problem or knew if there was a way to get that box to go away.

Another option would be to use the following extension to push those messages into the status bar. It could be a convenient way to have your messages visible when you want them, but with less distraction.
https://addons.mozilla.org/en-US/firefox/addon/status-4-evar/
If you try it, let us know what you think.

How do I turn on and turn off the pop-up that displays the true URL when I hover over the link?

I would like to know how to set Firefox so it displays the true URL of a link when I hover my mouse over that link.

It's been many moons since I've used a Fireberd, since I'm no longer with the phone company, but if memory serves, that can be turned of directly with a fireberd command. You might check the manual for that. If so, then all you need is a simple "send GPIB" command from Labview
Eric
Eric P. Nichols
P.O. Box 56235
North Pole, AK 99705

My link preview has disappeared from the bottom left of the page (it no longer pops up when I hover over a link.) Thoughts on how to get it back? I really LIKE having it!

My link preview has disappeared from the bottom left of the page (it no longer pops up when I hover over a link.) Thoughts on how to get it back? I really LIKE having it!

It is possible that the screen is too high and that the scroll bar and the find bar and add-on bar fall off at the bottom.
If that works then close Firefox (File > Exit/Quit) to save that setting.
See also:
* http://kb.mozillazine.org/Resizing_oversize_window
If the above didn't help then see:
* http://kb.mozillazine.org/Corrupt_localstore.rdf

Mouse cursor appearing as an arrow instead of a hand over album links

Hi. I've just published my iWeb 08 site on .Mac (using Zone Edit to set up the CNAME for my personal domain, purchased from Last Digital). For some reason, when I hover over the links in the My Albums page, the mouse cursor appears as an arrow instead of the usual hand cursor. This has already confused a few of my testers, as obviously people are conditioned to expect a link where they see a hand. The links themselves work fine, it's just that the mouse cursor makes it look like they're not links. Does anyone know how this can be fixed so that the hand appears when you hover over each image? You can see the page in question here - http://www.paulinelockie.com/Pauline_Lockie/Portfolio/Portfolio.html

That's the way it is.
When you have multiple images in an album, and move the pointer over the album, you see the images displayed.
Since it is not really a link, a pointer is used instead of the hand. It's a design decision.
Send a feedback to the iWeb team.

When I used to move my cursor over a link, it would display the address, that disappeared, how do I get it back on?

When I used to move the cursor over a link, it would display the address of the link in the lower left hand corner before I clicked on it. This has disappeared, how do I turn it back on?
== This happened ==
Not sure how often
== A few months ago

View > Statusbar

VoIP over satellite link

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