Monthly Archives: July 2014

Scenario#45: 7841 SIP phone in Registration loop

*+-I was working on this customer issue last week where they added a new 7841 phone but it was not registering properly or should I say it was registering briefly before unregistering. Call Manager was 9.1.2.11900-12 which does not support

Posted in CCIE Collaboration

CCIE DC: Multihop FCoE on Nexus 5k

*+-In this blog post I will show one of the examples given by Erik, which is multihop FCOE Configuration on the Nexus 5k’s in the hope that it will help someone out there. Authors note: I think that the order

Posted in CCIE Datacenter

AAA Override with ACS5.2

*+-In this post we will see how to use “AAA override” feature of a WLAN combined with RADIUS server configuration,  to override settings assigned by WLAN. You can change VLAN, QoS profile with 802.1p, ACL, etc using this this. We

Posted in CCIE Wireless

CCIE DC: FCoE NPV

*+-So let’s check out FCoE NPV, first a quick word of advice: Make sure when switching fibre channel modes (NPV vs FC Switching) make sure you completely write erase before you switch modes. Without further adue, let’s look at the

Posted in CCIE Datacenter

NPV and NPIV

*+-NPV: N-port visualization +——————-+ |                                  | | NPIV core           | |                  

Posted in CCIE Datacenter

MGCP UDP ports

*+-MGCP uses UDP for sending clear text messages for control. ————Callmanager MGCP ports:——————– CCM to gateway — uses src and destination UDP port 2427 (vice versa) Gateway to CCM – Keepalive and backhaul port – TCP port 2428.    

Posted in CCIE Collaboration

MGCP messages

*+-a. RSIP – Restart in Progress – When you reset a gateway this message is sent by gateway to CA. b. AUEP and AUCX – Audit End point and Audit COnnection. – These messages are issued by the CA to

Posted in CCIE Collaboration

MDS initial configuration example

*+-==task== 1. config port fc1/1 as ports of the vsan and enable them ==config== conf t vsan datab vsan  11 vsan datab vsan ## int fc1/1 int fc1/1 no shut ==verify commands === show int ## br show flogi datab

Posted in CCIE Datacenter

6608 MGCP configuration

*+-To configure a 6608 blade to register with Callmanager, do the following, a. Log into the 6500 switch and do a sh module to find the slot number in which 6608 is installed b. Do a “set port voice interface

Posted in CCIE Collaboration

MGCP – Strip Trailing #

*+-Trailing# works only with the @ pattern. Other discard digits like PreDot, PreAt etc works fine with any pattern, ex: 9.1[2-9]XX[2-9]XXXXXX In CCM 4.1, you don’t need to define any discard digit rules to remove trailing#. CCM considers trailing #

Posted in CCIE Collaboration