Should I Enable MGCP ALG and SIP ALG

Should i does it affect my network performance

If you don't know what they do or don't have a use for them (eg; you're not using a VoIP provider or service), don't enable them. Simple as that.
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Similar Messages

  • SIP ALG feature queries

    I have few queries related to SIP ALG feature.
    - Is SIP ALG(NAT) and SIP inspection(inspect sip) dependent on each other? Do we need to enable both features on a router? Or are they independent?
    My understanding is both are separate features and SIP ALG make sure it open up doors on NAT for any incoming connections from outside using the ports negotiated. And SIP inspection(the 'inspect sip' command) can be added for security purposes to make sure the router when acting as a firewall dynamically allows ports for traversal.
    Please correct if my understanding is correct.
    - Why do docs/discussions mention SIP ALG feature (enabled by default) breaks communication(one way/disconnects)? Can someone illustrate why would this feature result in a call breaking?
    - Is there a difference in these two features in the way it is implemented on an ASA vs routers?
    Would be grateful if someone could help on my queries. Tried searching in internet but didn't find clear info.
    Thanks,
    Karthic

    Hello, 
    It has been always supported on the ASA platform. You just need to turn on the SIP inspection.
    Mike 

  • Enabling the sip/alg

    Hi 
    I am looking to use a softphone from a third party software and for that  I have just purchased a new BT Home Hub 3 in the hope that it would work (I had BT Home Hub 2 and was told to buy the Home Hub 3) but unfortunately it doesn't.
    I was told that ONLY BT can disable my sip/alg and for that I phone the Technical support about 6 times and nobody seems to know what I am talking about. Now, I am with a second router and I cannot get what I am looking for, I am so frustrated.
    Does anyone know how I could get the sip/alg disabled?
    Many thanks,
    Karine 

    You should be able to run it on either. If you have a choice, it would probably be better to run it on the upstream router. There are some things with SIP that aren't supported with the NAT ALG when the SIP is originated and fixed on the same router. One of these things I can name off hand is the 'sip bind' command which isn't supported on the same box.
    It's still very possible to run it on the same box, however. But the SIP ALG doesn't require any information from CME to work properly.

  • CUBE and NAT without SIP ALG

    I was wondering if anyone had a CUBE SIP Profile example for rewriting SDP to fix private-to-public IP address in the SDP so that CUBE can be used behind a static NAT without SIP ALG.

    Im trying to connect a SIP softphone (on the outside) to a IP PBX on the inside.  I am seeing postings that say that "ip nat service sip" is the command that enables that feature, and others say that it breaks it.  So far my testings shows that it does break it.  Ultimately I want my outside softphone to register to the Phone system as an external IP address.  It seems like SIP normally relays the internal IP address and the ALG router will make the translation on outbound and send it to the right source. 

  • DDR2200 Disable SIP ALG

    Hello;
    I am attempting to assist a friend who was given a DDR2200 by their ISP, Centurytel.
    We are trying to disable the SIP ALG in the gateway but the link is not present when we log into the gateways GUI.
    We've tried to get Centurytel to assist us but all they have done is try to update the firmware.
    software version v00.00.03.45.4e
    hardware version v06
    When we show them where the SIP ALG should be located in the GUI when referencing the DDR2200 user manual (pg 63) but they are not able to explain why we cannot see the link and are unable to assist us further.
    I need to disable the SIP ALG as it's interfering with a SIP based Audio/Video Chat application my friend uses.
    Any assistance would be greatly appreciated?
    Thanks in advance.
    Posted by WebUser Matthew Wichlan

    Hello.
    The standard port for SIP is port 5060, so Cisco runs an ALG on this port.
    You've switched it off, so there os NO ALG running for UDP at least.
    Non standard ports won't be running the SIP ALG by default, although you can switch one on using the command you found.
    Adam

  • SIP ALG / SIP NAT Traversal

    I have a 2900 series router running IOS version 15.1(4).  I am trying to connect 3rd party sip softphones to a 3rd party SIP Call controller on the inside.  With low-cost firewall/gateways, I normally enable the SIP ALG feature and it will dynamically open the UDP ports for a SIP conversation for the duration of it and then close them.  Does cisco IOS firewall have a SIP ALG feature and how do I configure it?  Any guidance is much appreciated. 
    Eddie

    Im trying to connect a SIP softphone (on the outside) to a IP PBX on the inside.  I am seeing postings that say that "ip nat service sip" is the command that enables that feature, and others say that it breaks it.  So far my testings shows that it does break it.  Ultimately I want my outside softphone to register to the Phone system as an external IP address.  It seems like SIP normally relays the internal IP address and the ALG router will make the translation on outbound and send it to the right source. 

  • SIP ALG for NAT Cisco 3845

    Does the SIP ALG for NAT have to be on the router where I am planning on running Call Manager Express for that to work properly, or can I have it running on an upstream router where I am currently preforming NAT functions?

    You should be able to run it on either. If you have a choice, it would probably be better to run it on the upstream router. There are some things with SIP that aren't supported with the NAT ALG when the SIP is originated and fixed on the same router. One of these things I can name off hand is the 'sip bind' command which isn't supported on the same box.
    It's still very possible to run it on the same box, however. But the SIP ALG doesn't require any information from CME to work properly.

  • SSAUDIT .alg and .atx files are out of synch. How do I start from scratch ?

    After upgrading Hyperion Planning from 11.1.1.3 to 11.1.2.1, the .alg and .atx files that are generated when SS Audit is enabled are now out of synch. How do I start from scratch again ? Stated differently, the row numbers in the .alg file no longer correspond to the .atx rows. How do I "reset" these files so they start again in row 1 ?
    I know this must have happned to someone else so I thought a solution could be easily googled and found. I can't find it anywhere.

    Stop the application and delete the files. If you want to just keep the changes from the last backup, change in the essbase.cfg SSAudit to SSauditR and then when you do an endArchive it will delete the files and start over

  • RV016 SIP ALG

    Hi 
    Since 2 week I have some problem with my voip provider .
    In my pabx software (3cx) my voip provider is correctly register but sometimes i dont know why I can't received external to internal call. 
    When i call my voip provider he tell me to disable sip alg of my router but in my RV016 i don't find any option sip alg.
    How must i do?
    My voip provider tell me to do the command line 
    no ip nat service sip udp port 5060
    in telnet but i search and i can't acces telnet because i don't know login/password 
    Thanks for your help
    Best Regard 
    Loic

    Hi Loic,
    Can you try please from the browser :  https://IPaddress_of_rv016/f_general_hidden.htm
    You will see the SIP ALG option
    Please rate the post or mark as answered to help other Cisco Customers
    thanks
    Mehdi

  • WRV210 SIP ALG disable?

    Can i disable the wrv210 sip alg ? it messes with my voip provider and must be disabled...i use a pap2T adapter and it works fine for outgoing calls...but after a while incoming calls half ring and i cant answer them.

    please look at this link.....it doesn't state the info on the SIP ALG everyone you look at info on the WRV210...but this clearly states it has it built in to support voip to help traverse the firewall.....but it does it behind the scenes and cannot be turned off
    http://www.cisco.com/en/US/prod/collateral/routers/ps9923/ps9929/data_sheet_c78-502735.html

  • Does Airport Time Capsule have SIP ALG

    I have an Airport Time Capsule and am trying to use my Bria 3 App for my company VoIP service, My IT guys have asked if the Airport Time Capsule has SIP ALG turned on.  I have'nt a clue where to look, any ideas?

    SIP and ALG are features that would be found on commercial grade routers.
    The Time Capsule has no settings for VoIP. It is a very simple home router with a built in hard drive.

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    Thanks,
    I usually use the OS connection option. So as you suggest, connect without the ISP connection software.  Doing so does not by-pass the sudo command being active in Activity Monitor however. 
    On reading my post I see my failure to link the concerns of the laptop purchase with the sudo and modem. My thought here is of an intersection of known vulnerability with this widely used modem/software (via permanent sudo process activated) and that vulnerability then being known and utilised by another party(s).
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    RV042 does not suport SIP ALG.

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