[cisco-voip] Troubleshooting Resources?

Thu Mar 27 12:13:00 EDT 2008

Yes, Yes, and Yes

Does anyone know of a link on Cisco's web site that defines port usage?  ...the ports defined were stock from Sprint's COS setup.

--or-

Can you define the UDP ports that the routers should use?

From: Scott Voll [mailto:svoll.voip at gmail.com] 
Sent: Thursday, March 27, 2008 11:45 AM
To: Todd Simons
Cc: Paul; cisco-voip at puck-nether.net
Subject: Re: [cisco-voip] Troubleshooting Resources?

ACL 2015 is VPN access..... Right?

ACL 2016 is FTP Access...... Right?

ACL 2014 is Voice?

I "think" h323 control is TCP port 1720 and media is dynamic over udp ports 1024 - 65535.  if this is true. you may not be classifying all the traffic correctly.

Scott

On Thu, Mar 27, 2008 at 8:17 AM, Todd Simons <tsimons at delphi-tech.com> wrote:

Below is my show ACL. Why would the FE be involved? The channelized voice comes in via T1/PRI gets converted, goes into a loopback interface, then leaves the default route of the router, the Multilink1

Extended IP access list 2014

10 permit udp any any range 3248 16384 (1510481 matches)

20 permit tcp any any eq 1790 (2783 matches)

Extended IP access list 2015

10 permit tcp any any eq 443 (18140152 matches)

20 permit udp any any eq isakmp (84692 matches)

30 permit udp any any eq 768

40 permit esp any any (513489946 matches)

Extended IP access list 2016

10 permit tcp any any eq ftp-data (391310 matches)

20 permit tcp any any eq ftp (91751 matches)

30 permit tcp any any eq 2456 (8396 matches)

From: Scott Voll [mailto:svoll.voip at gmail.com] 
Sent: Thursday, March 27, 2008 11:08 AM
To: Todd Simons
Cc: Paul; cisco-voip at puck-nether.net 

Subject: Re: [cisco-voip] Troubleshooting Resources?

Someone can correct me if I'm wrong, but it looks like you are not matching the right traffic.  I believe H323 control is ports 1720 and 1719, and I seem to think the RTP is different they you match in your ACL.

With that said, maybe you can match traffic of the FE interface as the only thing that should be coming directly from that port would be your Voice traffic or management traffic.

Just an idea.

Scott

On Thu, Mar 27, 2008 at 6:35 AM, Todd Simons <tsimons at delphi-tech.com> wrote:

Information removed to protect the innocent, Sprint has the same CoS setting on their side of the MultilinkPPP

!<generic information cut>
version 12.4
service timestamps debug datetime msec
service timestamps log datetime localtime show-timezone
service password-encryption
!
hostname <REMOVED>
!
boot-start-marker
boot system flash c2801-ipvoicek9-mz.124-18.bin
boot-end-marker
!
card type t1 0 2
card type t1 0 3
!
no aaa new-model
clock timezone EST -5
clock summer-time est recurring
network-clock-participate wic 2
network-clock-participate wic 3
network-clock-select 9 T1 0/3/1
network-clock-select 10 T1 0/2/1
ip cef
!
isdn switch-type primary-4ess
isdn logging
!
voice-card 0
!
!
!
controller T1 0/2/0
 framing esf
 linecode b8zs
 cablelength long 0db
 channel-group 0 timeslots 1-24
 description SprintLink Circuit 1
!
controller T1 0/2/1
 framing esf
 linecode b8zs
 cablelength long 0db
 ds0-group 1 timeslots 1-4 type e&m-wink-start
 description PBX - Nortel T1
!
controller T1 0/3/0
 framing esf
 linecode b8zs
 cablelength long 0db
 channel-group 0 timeslots 1-24
 description SprintLink Circuit 2
!
controller T1 0/3/1
 framing esf
 linecode b8zs
 cablelength long 0db
 pri-group timeslots 1-9,24
 description PBX - Nortel PRI
!
class-map match-any delphiCOS-Platinum
 match access-group 2014
class-map match-any delphiCOS-Silver
 match access-group 2016
class-map match-any delphiCOS-Gold
 match access-group 2015
!
!
policy-map ipcos-delphiCOS
 class delphiCOS-Platinum
  police rate percent 17
    conform-action transmit
 priority percent 17
 class delphiCOS-Silver
 bandwidth percent 25
 class delphiCOS-Gold
 bandwidth percent 33
!
!
!
!
interface Loopback0
 description dtiNJ-VoIP
 ip address <removed-addr1>
 h323-gateway voip bind srcaddr <removed-addr1>
!
interface Loopback1
 no ip address
!
interface Multilink1
 description Sprintlink
 ip address <removed-addr2>
 no ip route-cache cef
 no ip route-cache
 no ip mroute-cache
 load-interval 30
 no peer neighbor-route
 no cdp enable
 ppp multilink
 ppp multilink group 1
 service-policy output ipcos-delphiCOS
!
interface FastEthernet0/0
 ip address <removed-addr3>
 speed 100
 full-duplex
!
interface FastEthernet0/1
 shutdown
!
interface Serial0/2/0:0
 description Sprint Circuit 1
 bandwidth 1536
 ip unnumbered Multilink1
 encapsulation ppp
 no fair-queue
 ppp multilink
 ppp multilink group 1
!
interface Serial0/3/0:0
 description Sprint Circuit 2
 bandwidth 1536
 ip unnumbered Multilink1
 encapsulation ppp
 no fair-queue
 ppp multilink
 ppp multilink group 1
!
interface Serial0/3/1:23
 description NJ Nortel PBX Client Side DCH 4ESS, requires Clock
 no ip address
 encapsulation hdlc
 logging event subif-link-status
 isdn switch-type primary-4ess
 isdn protocol-emulate network
 isdn incoming-voice voice
 isdn supp-service name calling
 isdn ie oli 28
 no cdp enable
!
access-list 2014 permit udp any any range 3248 16384
access-list 2014 permit tcp any any eq 1790
access-list 2015 permit tcp any any eq 443
access-list 2015 permit udp any any eq isakmp
access-list 2015 permit udp any any eq 768
access-list 2015 permit esp any any
access-list 2016 permit tcp any any eq ftp-data
access-list 2016 permit tcp any any eq ftp
access-list 2016 permit tcp any any eq 2456
!
!
!
control-plane
!
disable-eadi
!
!
voice-port 0/0/0
 station-id name FXS 0/0/0
 station-id number 3000
 caller-id format e911
!
voice-port 0/0/1
 station-id name FXS 0/0/1
 station-id number 3001
 caller-id enable
!
voice-port 0/2/1:1
 station-id name NJPBX VoIP T1
 station-id number 732xxxxxxx
!
voice-port 0/3/1:23
!
!
!
!
!
dial-peer voice 195 voip
 destination-pattern 5...
 session target dns:dtiSH-VoIP
!
dial-peer voice 190 pots
 description NJPBX Tie Line
 preference 1
 destination-pattern [3-4][1-9]..
 direct-inward-dial
 port 0/3/1:23
 forward-digits all
!
dial-peer voice 193 voip
 preference 1
 destination-pattern [1,2]...
 session target dns:dtiMA-VoIP
!
!
gateway
 timer receive-rtp 1200
!
telephony-service
 max-conferences 4 gain -6

-----Original Message-----
From: Paul [mailto:asobihoudai at yahoo.com]
Sent: Wednesday, March 26, 2008 8:15 PM
To: Todd Simons; Jorge L. Rodriguez Aguila; cisco-voip at puck-nether.net
Subject: Re: [cisco-voip] Troubleshooting Resources?

Let's see your router's configuration.

--- Todd Simons <tsimons at delphi-tech.com> wrote:

> Yes, the "internet" traffic remains on the
> SprintLink backbone between their NYC NOC and their
> Springfield, MA NOC, which are 5~6 hops apart and
> not much more than 10ms latency
>
>
>
> From: Jorge L. Rodriguez Aguila
> [mailto:jorge.rodriguez at netxar.com]
> Sent: Wednesday, March 26, 2008 6:56 PM
> To: Todd Simons; cisco-voip at puck-nether.net
> Subject: RE: [cisco-voip] Troubleshooting Resources?
>
>
>
> Do you mean you are running Voice via the internet?
>
>
>
> Jorge
>
>
>
> From: Todd Simons [mailto:tsimons at delphi-tech.com]
> Sent: Wednesday, March 26, 2008 5:28 PM
> To: Jorge L. Rodriguez Aguila;
> cisco-voip at puck-nether.net
> Subject: RE: [cisco-voip] Troubleshooting Resources?
>
>
>
> I'm new to this.
>
>
>
> I have PRI's to our non-VoIP PBXs, to Cisco 2801
> routers (our data internet routers), and then
> dialpeers (pots/voip) defined from there, very
> basic.
>
>
>
> From: Jorge L. Rodriguez Aguila
> [mailto:jorge.rodriguez at netxar.com]
> Sent: Wednesday, March 26, 2008 4:56 PM
> To: Todd Simons; cisco-voip at puck-nether.net
> Subject: RE: [cisco-voip] Troubleshooting Resources?
>
>
>
> Are you doing CAC? Can you give some more info on
> Codecs, Bandwidth on LLQ for voice, etc.
>
>
>
>
>
> Jorge Rodríguez Aguila
>
> CCNA,CCVP
>
> Senior Voice/Data Network Consultant
>
> Netxar Technologies
>
> jorge.rodriguez at netxar.com
>
> Office 787-765-0058
>
> PCS 787-688-8530
>
>
>
>
>
>
>
>
>
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On
> Behalf Of Todd Simons
> Sent: Wednesday, March 26, 2008 4:50 PM
> To: cisco-voip at puck-nether.net
> Subject: [cisco-voip] Troubleshooting Resources?
>
>
>
> Hello All
>
>
>
> Does anyone have any links for troubleshooting
> procedures?  We have everything from reduced call
> quality to voice dropping off.
>
>
>
> We are running on Sprint's internet backbone with
> CoS assigned, 6 hops between the routers and about
> 10ms latency, both sides have multilink ppp
> connections (2xT1)
>
>
>
> ~Todd

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