Cisco WAN :: Debugging SIP Voice Calls On 3800 Router?
Oct 24, 2011
We're having some numbers ported over to us and we'd like to verify that we are in fact receiving all of the numbers at our SIP gateway. Since we have been getting more and more activity on this router, I'm becoming more concerned about using certain debug's for fear that the router maxes out CPU and drops.
What the best debug command would give me this information with minimal impact on CPU? In the past I've used 'debug ccapi inout' and a couple of others similar to that. With so much activity though sometimes it bombs the router. Also I am logging to the console directly, maybe there is a better method with less CPU impact. I just don't want to have to go back and forth to look for stuff 50 times either if I write out to a file or something, it could work though I suppose.
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May 16, 2011
how many concurrent voice call can be conducted at once with the cisco sf 100d-08 8-port 10100 switch?
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Jul 10, 2012
can some one suggest me will it be recommended to use PIX firewall 525 on Voice ( sip ) network for 5000 CC to 1000 CC calls in signaling mode since our server are using public IP so will i be able to use it without NAT / PAT also will there be any issue of QOS.
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Jun 25, 2012
I have an issue with a Cisco 857w. When I connect on via SDM I get a message saying "SDM has detected enabled debugs on the router. Because debugs degrade the performance of the router and of SDM, it is recommended that they be disabled". I've connected onto the router via telnet and ran the show debug command which indicates that dot11 debugging is on and when I run the command no debugging all it turns it off. I then do a copy run start and reboot the router and it comes back on. how I permanently disable it?
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Aug 23, 2012
Doing systems work now, but today I am busy troubleshooting a site-to-site VPN endpoint on an ASA.
I find it hard to believe, but I've spent over an hour just trying to login and get some debugging info on the key exchange, etc. It seems almost impossible. I've tried "term mon", "debug crypto isakmp", "logging console", "debug crypto ipsec", and a gazillion other things.
Can't I just see the debug info for the site-to site VPN?
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Oct 10, 2012
As part of troubleshooting a seperate issue, somebody on my 891 router had set logging trap debugging which shows as a line in sh run just above the access-lists. There is no syslog server however so I'd like to remove this entry, however when I do no logging trap debugging I end up with a no logging trap entry replacing the previous logging trap debugging entry. Is there away to be rid of this entry? I tried no no logging trap but of course that's an invalid command.
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Mar 3, 2011
I have been struggling for a few days with getting site-to-site traffic working across a L2L IPSec tunnel. At this point, I have the tunnel up, and I see packets being decrypted on the correct IPSec SA's when I ping from a local network computer on the ASA side to a local network computer on the router side. I cannot ping from one side to the other, but those packets are getting through. We have another L2L tunnel that is from that ASA to another remote site's ASA, and that is functional. I have mirrored the configuration for ACLs, etc. from that site, so I believe that the issue is with the packets getting incorrectly translated by the NAT/NONAT statements/ACLs on the router side.
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Jul 14, 2012
I need to upgrade compact flash memory card for a 3800 router. Basically i want to upgrade code on this router and the current flash size (64Mb) cannot hold new image. I wanted to check if i swap the old flash (64 Mb) with a new one 256 mb, i will loose vlan.dat file since it's stored in flash. Is there a way i can copy vlan.dat to new flash which has new code before i change the boot statements and reload the router?
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Jul 10, 2012
Is there a way to be able to check from one computer on a network to another computer on the same network when both have been set up with NAT?
For example, computer 10.0.0.10 cannot ping 10.0.0.20 because NAT has been set up. Port forwarding does not seem to be an answer. Is it possible for NATted computers to be able to ping each other or not?
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Mar 2, 2011
I have been struggling for a few days with getting site-to-site traffic working across a L2L IPSec tunnel. At this point, I have the tunnel up, and I see packets being decrypted on the correct IPSec SA's when I ping from a local network computer on the ASA side to a local network computer on the router side. I cannot ping from one side to the other, but those packets are getting through. We have another L2L tunnel that is from that ASA to another remote site's ASA, and that is functional. I have mirrored the configuration for ACLs, etc. from that site, so I believe that the issue is with the packets getting incorrectly translated by the NAT/NONAT statements/ACLs on the router side.
The ASA is: Cisco Adaptive Security Appliance Software Version 8.2(2)Hardware:
ASA5520, 512 MB RAM, CPU Pentium 4 Celeron 2000 MHz The router is:Cisco IOS Software, 3800 Software (C3845-ADVENTERPRISEK9_SNA-M), Version 12.4(20)YA3, RELEASE SOFTWARE (fc2) Router Config:!version 12.4!card type t1 0 0!no ip cef!ip multicast-routing no ipv6 cef!crypto isakmp policy 10 encr 3des authentication pre-share group 2crypto isakmp key xxxxxxx address nn.nn.12.130!crypto ipsec security-association lifetime seconds 86400!crypto ipsec transform-set 3DES-SHA esp-3des esp-sha-hmac !crypto map NOLA 11 ipsec-isakmp set peer nn.nn.12.130 set transform-set 3DES-SHA set pfs group2 match address VPN-ACL!controller T1 0/0/0 fdl both cablelength long 0db channel-group 1 timeslots 1-24!interface Loopback0 ip address 1.1.1.1 255.255.255.252 ip virtual-reassembly no ip route-cache crypto map NOLA!interface GigabitEthernet0/0 no ip address duplex auto speed auto media-type rj45!interface
[code]....
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Jun 27, 2012
I have Cisco 3800 series router it needs user name and password to access through terminal I don't have the user name and password. Need To reset the password.
Terminal screen shot is attached here you can see that.
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Feb 26, 2013
I have a working 3800 router which runs on bgp pretty well. Existing setup has 2 serial ports for the bgp and 1 gigabit port for the LAN.Now, i want to add another 3800 as a standby router making it clustered - ACTIVE/STANDBY via hsrp protocol.
1.) What are the implications in adding another 3800. Do i need to reconfigure the ip addresses on my serial? or just the LAN
2.) Are there any additional requirements like firmware versions etc?
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Mar 27, 2013
I wanted to configure failover internet between two routers Cisco 3800 Series. Each router is connected to an ISP. I have configured HSRP protocol on my interfaces and my HSRP configuration works well. I want to configure my routers to switch my internet traffic in case of failure. For example,if the first ISP internet connection fails, traffic will switch at the second ISP. I want to know how I should proceed to do this.
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Jul 22, 2012
I've got a Gateway 2wire 3800 HGV-B router which works fine wirelessly, but when using an ethernet cable to connect to the internet, it doesn't even recognize the computer. My laptop runs wirelessly all the time, and I recently picked up a desktop PC for home here, and it's the first wired connection I'm using, but for some reason the wired connection isn't connecting to my network, but instead it's own Unidentified Network.
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Jun 20, 2011
I know the problem lies in the timeout for the default inspection rules. I cannot find where to change this.I have nat statements for 1 to 1 nat to my polycom and tandberg video devices. I have set the firewall for the ouside to in rules to inspect all. This allows the devices to communicate with public addresses, but the video calls drop after 1 hour. How do I change the settings so this does not happen. I have tried setting the rule to allow instead of inspect, but when I do this, I have no access at all. I just want to nat 1 to 1 and allow all traffic to the nated devices. I know this is not secure but it is the only way to allow h323 through to let the video conferencing devices work.
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Apr 6, 2012
I just bought an e2500 to replace my WRT54g, hoping that it would fix my call dropping problem. I had tried installing some friend recommended third party firmware on the WRT54g that he said would fix my problem, and with my infinite technological wisdom and experience ended up bricking it.
My problem is that randomly during skype calls with my family back home, I will lose internet connection. It drops the skype call and then I cannot open a web page or anything for about 60 seconds. My internets dead, then it just starts working normally again by itself. I can have anywhere from 60 seconds of connectivity up to 20 minutes or more while skyping. This all happens over a wired connection. Changing the router didn't change a thing, the problem still happens in exactly the same way. I have good bandwidth and all that stuff.Also, I watch netflix on my Xbox 360 over a wireless connection. Sometimes it will just lose connection in the middle of a show. However, the difference is that I can reconnect almost instantly after an interruption on that device. I have fixed the settings on the two different channels according to one of the other post I found in this community, and have not tried those settings out yet. This doesn't worry me as much as the wired connection issues.
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Feb 23, 2013
For some reason I can no longer make Wi-Fi calls with my E1200 router. I have checked with my ISP and T-mobil. They both tell me that everything on their respective ends is working correctly. The only piece of the equation is the router.
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Jul 8, 2008
I recently purchased a rvs 4000 wired linksys router for my business. Everything works great with the exception of my VOIP PBX server. I can receive a call and make a call one at a time. If a second line rings in and is picked up the first call and the second go dead air. I am sure that it is a security setting somewhere that I just can't seem to figure out. I sure would like to get some direction on this.
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Aug 15, 2012
MY voice conversation on magic jack breaks up when I download a movie to my direct TV. I have a Belkin F9K1103V1, N750Db. I'm not using WiFi, Im wired to ports on back of Belkin.
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Mar 15, 2011
I have few queries abou the Cisco 880G series router.
1) Suppose if we have a 3G service enabled SIM card then can we insert the same on the Cisco 880G router and browse internet from the LAN of 880G?
2) I think the HSPA+ standard supports 84 Mbps downlink speed..... so is it supported on 880 G router?
3) Can we configure Cisco 880G as a CME?
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May 12, 2011
I have a cisco2811 router and i want to convert or make it to be a voice enabled router? it has a current image/ios of (C2800nm-adventerprisek9-m), version 12.4(5a).
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Sep 30, 2012
I'm trying to configure a Cisco 3800 with a WIC-2AM-V2 to do DDR. I've gotten it to work before, but it was a while and now the config doesn't seem to work. I'm using an Lo0 interface and ip unnumbered on the Dialer interface. Using debug dialer and debug ppp and see nothing at all trying to dial out.
##############################################################
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname DDR
[code].....
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Sep 1, 2011
I am trying to configure cisco 3800 as NTP server for all Juniper MX router clients. Purpose is to server the clock to all Juniper routers. But i m facing weird issue.. All Juniper routers are getting synch with Cisco 3800 but there is difference of 30 min between client and server time.
Cisco config
ntp authentication-key 100 md5 11201D00163B0C1E 7
ntp trusted-key 100
ntp source Loopback1
ntp master
end
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Jun 12, 2011
I'm having a problem on which i cannot find an answer. I have a VPN router 3800 series (DMVPN) with 2 VRF on it, we also use dual Nat to reach our data center behind the 3800 series isr.
I created the Nat rules and the acl's , but the Nat is just not working, is there a special configuration needed for Nat and VRF's?
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May 16, 2011
What's the best router / handset to get to practice for CCNA Voice?
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Sep 6, 2011
Since I am new to VOIP and am getting confused with the responses online on how to connect to a commercial phone system I thought I would ask here. I have a small voice router (1751) running CME with 2 Cisco 7940 phones. I would like to hook it up to a commercial line, but not sure how to. What specific card will I need for my voice router to connect it to the outside world (FXO right)? I see where they talk about hooking it up directly to the LAN line, another using a commercial phone system, and then the others using a PBX,ect... So confused to say the least. I assume I need an FXO port to connect to the POTS, but not sure if there is anything else I’m missing in the setup...
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Dec 21, 2012
When I try to configure a voice port (like voice-port 0/0/0:15) after doing a conf t, it gives me an error of invalid input detected.We are using a Cisco 3945. We have successfully setup 3825 and 2851 in the past.
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Jun 20, 2011
We have a 2800 router which is configured as a Voice Gateway. For some reason, yesterday we started getting DFM notifications like the one below. We seems to get an active messages every few 10mins or so, then a few minutes later the message will clear before becoming active again...
EVENT ID = 0009NK2
ALERT ID = 0000QTM
TIME = Tue 21-Jun-2011 16:06:50 BST
STATUS = Active
SEVERITY = Critical
MANAGED OBJECT = XXXXVG1
MANAGED OBJECT TYPE = Routers.
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Jan 17, 2011
I need to configure two voice-enabled cisco routers, each one has an analog FAX machine. The routers are connected with a serial connection. In the end, the faxes should be able to fax to each other.The fax uses RJ-11 and I've established that I will be configuring FSX ports. (These ports are used for analog devices such as telephones, modems, and fax machines). I am unable to find a single site that gives information about specifically configuring fax machines.
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May 20, 2012
I recently moved to a cable ISP and unfortunately had to also change routers in order to take advantage of the VoIP feature (analog phone) they provided me with.Now, the new router, the WRP400, is very limited feature-wise compared to the custom flashed WRT54GL I used to use with my DSL provider.Now the WRT54GL does not have any FXS ports, so I obviously can't just plug my cable modem to the WRT54GL. Therefore, I was hoping to achieve a setup similar to this one:Cable modem => VoIP Router w/ voice only (WRP400) => "Main" router (WRT54GL w/ Tomato)Is there a way to bridge the WRP400 successfully with the WRT54GL keeping only the voice feature enabled on the VoIP router while the WRT54GL takes care of the rest? (Wireless, WAN, port forwarding, etc)
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Apr 22, 2011
We have some point-to-point sites linked with our HO with 10-30mbps speed. We have provided DID telephone lines to these sites as well.
We want to limit the bandwidth with 1mb bandwidth only and also make sure that the voice traffic (DID telephone lines) gets the priority over all other traffic even if they are utilitizing the 1mb link completely. We have some Cisco 1841 routers that we are planning to configure on the main uplink on each of these sites. how to give the priority to the voice traffic yet limiting the bandwidth to 1mb.
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Dec 6, 2010
I'm trying to configure QoS on my 877 router to give priority to voice packets. However, when I do a show policy-map for WAN interface, all the classes show 0 bps. When I do a show int for the WAN interface, I get the correct bandwidth util.
This 877 is meant for a home network. I'm running a Cisco 7970 phone using phone-proxy back to my HQ. I'm also shaping the traffic.
Here is my config
Class Map match-any EF (id 1)
Match ip precedence 5
Class Map match-any class-default (id 0)
Match any
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Sep 26, 2011
I was just configured a 3800 router with this command. I cannot get to the ROMMON mode anymore. Cisco says you should press Break key within 5 seconds after the image decompresses during the boot. But mine is ignoring it and going to load running config directly.
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