CCIE Voice Lab

One way calling issue on CME

tnn314 — Mon, 15 Feb 2010 01:46:28 +0000

I ran into my first real issue this evening. I was trying to set up 2 SIP and 2 SCCP phones on CME. Everything was working except one SIP phone couldn’t receive calls from the other phones. It could make calls though. All calls to that particular SIP phone with extension 3005 would come up busy.

debug ccsip messages didn’t show anything useful. Neither did a whole lot of other debugs. On a whim, I looked at debug voip dial-peer:

BR2#debug voip dialpeer
voip dialpeer default debugging is on
BR2#
Feb 15 01:24:31.677: //-1/xxxxxxxxxxxx/DPM/dpMatchPeersCore:
Calling Number=3005, Called Number=3005, Peer Info Type=DIALPEER_INFO_SPEECH
Feb 15 01:24:31.677: //-1/xxxxxxxxxxxx/DPM/dpMatchPeersCore:
Match Rule=DP_MATCH_DEST; Called Number=3005
Feb 15 01:24:31.677: //-1/xxxxxxxxxxxx/DPM/dpMatchPeersCore:
Result=Success(0) after DP_MATCH_DEST
Feb 15 01:24:31.677: //-1/xxxxxxxxxxxx/DPM/dpMatchPeersMoreArg:
Result=SUCCESS(0)
List of Matched Outgoing Dial-peer(s):
1: Dial-peer Tag=20002
2: Dial-peer Tag=40002

Now that doesn’t look right. Why would there be 2 matches? A SIP phone should create only 1 dial-peer in the 40,000 range. Sure enough, I accidentally created an SCCP entry via the ephone-dn command.

BR2#sh dial-peer voice summary
dial-peer hunt 0
             AD                                    PRE PASS             OUT
TAG    TYPE  MIN  OPER PREFIX    DEST-PATTERN    FER THRU SESS-TARGET STAT PORT
20001  pots  up   up             3001$    0        50/0/1
20002  pots  up   up             3005$    0        50/0/2
20003  pots  up   up             3002$    0        50/0/3
40002  voip  up   up             3005     0  syst ipv4:10.10.202.54:50
40001  voip  up   up             3006     0  syst ipv4:10.10.210.251:8

Removing the offending ephone-dn resolved the issue. Well, that wasn’t really 2 hours wasted as I got a chance to look a little closer at many other useful debugs.

Which phones to buy for the home lab

tnn314 — Sun, 14 Feb 2010 01:05:17 +0000

As I am doing the research to build my home lab, one of the first issues I had to confront was the ip phones. With version 3, it looks the 7960s are not going to cut it. Even the 7961s are outdated. As can be seen from the equipment list, the actual lab will have 7965s. Some of the things the earlier generation phones don’t support are BLF, + dialing, many SIP features, g722 and ILBC codecs. Although I hear that the 7962s can work just as well, I decided to order some 7965s.

Feature Support by Protocol for Cisco Unified IP Phone:

7960: http://www.ciscosystems.cd/en/US/docs/voice_ip_comm/cuipph/7960g_7940g/7_0/sccp/english/administration/guide/7900afeatapp.html

7961: Can’t seem to find a comparable doc

7962: http://www.ciscosystems.com/en/US/docs/voice_ip_comm/cuipph/7962g_7942g/7_0/english/administration/guide/7962apxb.html

7965: http://www.ciscosystems.lt/en/US/docs/voice_ip_comm/cuipph/7965g_7945g/7_0/english/administration/guide/7965dif.html

Possible features:

http://www-europe.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_0_1/ccmsys/a08ipph.html#wp1032225

HWIC-4ESW and 3750 vlan configuration

tnn314 — Fri, 05 Feb 2010 16:13:46 +0000

HWIC-4ESW:

http://www.cisco.com/en/US/docs/ios/lanswitch/configuration/guide/lsw_hwic_ethsw_ic_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1046684

I don’t have this at my home setup and haven’t had to config it in the field. From the docs, the configuration here is similar to the old 2900s/3500s via the vlan-database command in enable mode.

enable
vlan database
vlan vlan-id
vtp server|client|transparent|domain|password
show vlan-switch

Also of note is that the ports on this module must be set to trunk mode for the ip phones.

interface FastEthernet1/0
 switchport trunk native vlan 10
 switchport mode trunk
 switchport voice vlan 110

3750:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_44_se/comman/reference/cli2.html#wp7730585

“?” will be enough to get by on these switches. Pretty much similar to the other switches(3550s,3560s) as far as this section is concerned.

CCIE Voice Lab v3.0 Equipment and Software List

tnn314 — Wed, 03 Feb 2010 19:34:58 +0000

I know all too well how valuable it is to have a home rack . After all, debugs are a CCIE’s best friend.

However, looking over this list, it looks like remote rack time will be required — a lot of it. I think I have enough equipment to test at least 3/4 of the requirements. For the RS, I had the full rack at home. For the Security, I had enough to do around 90% of the workbooks that were out there. I used around 60 hours of remote rack time, mainly to work on my speed.

We’ll see how many remote rack hours I will have to put in for this cert.

===============

https://learningnetwork.cisco.com/docs/DOC-5292

Lab Equipment:

1.   Cisco MCS-7845 Media Convergence Servers
2.   Cisco 3825 Series Integrated Services Routers (ISR) (12.4T)
3.   Cisco 2821 Series Integrated Services Routers (ISR) (12.4T)
4.   ISR Modules and Interface Cards+ VWIC2-1MFT-T1/E1
- PVDM2
- HWIC-4ESW-POE
- NME-CUE
5.   Cisco Catalyst 3750 Series Switches [12.2(44)SE]
6.   IP Phones (7965) and Soft Clients(CUPC,CIPC[7.0(1)])

Software Versions

Any major software release which has been generally available for six months is eligible for testing in the CCIE Voice Lab Exam.

*Cisco Unified Communications Manager 7.0(1)
*Cisco Unified Communications Manager Express 7.0(1)
*Cisco Unified Contact Center Express 7.0(1)
*Cisco Unified Presence 7.0(1)
*Cisco Unity Connection 7.0(1)
*All routers use IOS version 12.4T Train.
*Cisco Catalyst 3750 Series Switches uses 12.2 Main Train

Network Interfaces
1.Fast Ethernet
2.Frame Relay

Telephony Interfaces
1.T1
2.E1

Information supplemented by https://supportforums.cisco.com/thread/2002747?tstart=0

CCIE Voice lab blueprint

tnn314 — Tue, 02 Feb 2010 14:32:05 +0000

Looks like it’s version 3 now.

Good news is that I’ve a little experience with of each of the topics. The bad news is that this experience is grossly inadequate for the IE. Actually, that’s not really bad news. As all of us who have gone through the CCIE certification process knows, the challenge of the lab is a given. Those who view this challenge as an argument will quickly find themselves, well, pursuing other challenges.

================

1.00	Implement and Troubleshoot Campus Infrastructure and Services
1.01	VLAN
1.02	DHCP
1.03	TFTP
1.04	NTP
2.00	Implement and Troubleshoot CUCM Endpoints
2.01	CUCM SCCP Endpoints
2.02	CUCM SIP Endpoints
3.00	Implement and Troubleshoot CUCME Endpoints
3.01	CUCME SCCP Endpoints
3.02	CUCME SIP Endpoints
4.00	Implement and Troubleshoot Voice Gateways
4.01	T1/E1 PRI
4.02	T1/E1 CAS
4.03	H.323
4.04	MGCP
4.05	SIP
4.06	H.323 RAS
4.07	IP-IP Gateway/CUBE
5.00	Implement and Troubleshoot Call Routing Policies
5.01	Route Patterns and Dial-peers
5.02	Digit Manipulations and Translations
5.03	Class of Services
5.04	Route Selection Preference and Redundancy
5.05	Mobility and Single Number Reach
6.00	Implement and Troubleshoot High Availability Features
6.01	SRST
6.02	AAR
7.00	Implement and Troubleshoot Media Resources
7.01	CODEC Selection and Flexibility
7.02	Conference Bridges
7.03	Transcoder
7.04	Music-on-hold
7.05	Media Resources Preference and Redundancy
7.06	Other CUCM Media Resources
8.00	Implement and Troubleshoot Supplementary Services
8.01	Call Park
8.02	Call Pickup
8.03	Barge
8.04	Callback
8.05	Other Supplementary Services
9.00	Implement and Troubleshoot Other CUCM Voice Applications
9.01	Extension Mobility
9.02	IPMA
9.03	Other CUCM Voice Applications
10.00	Implement and Troubleshoot QoS and CAC
10.01	L2/L3 Traffic Classifications and Policing
10.02	L2/L3 Queuing Mechanisms
10.03	L2 LFI
10.04	RSVP
10.05	Call Admission Control
11.00	Implement and Troubleshoot Messaging
11.01	Cisco Unity Connection
11.02	Cisco Unity Express
11.03	Call Handling and Routing
12.00	Implement and Troubleshoot Cisco Unified Contact Center Express
12.01	Advanced Configuration
12.02	Script Customization
12.03	Redundancy
13.00	Implement and Troubleshoot Cisco Unified Presence
13.01	CUCM Presence
13.02	Cisco Unified Presence Server Integration

CCIE Voice written exam #350-030

tnn314 — Tue, 02 Feb 2010 14:16:22 +0000

http://www.cisco.com/web/learning/le3/ccie/voice/written_exam.html

Since my RS IE, I’ve never been one to prepare for the written. By this I mean, I figured if I prepare for the lab, then I would be more than ready for the written. In other words, when I feel like I have ready for the lab, I will sign up for the written. Still, given the long lead time for a seat in RTP (where I’ve sat for both labs), I may have to reconsider.