Archive for the ‘Crabs’ Category

Lab 2.x – Call park issue

Posted: February 28, 2006 by sankar in Crabs, Lab 2.6

Call park range for Site 1 was overlapping with Site 3’s phone extension range (500X)

To make Call park work in this scenario, in Site1’s and Site2’s calling search spaces, you have to order Site 3 Phone’s partition above Call park partitions for Site 1 and Site 2 respectively.

Call park for Site 1 — 500X — Partition – Site1_park

Call park for Site 2 — 600X — Partition – Site2_park

Site 1’s CSS -> Site1CSS —> Site3_Phones, Site1_Park

Site 2’s CSS -> Site2CSS—-> Doesnt matter which way you order this, since Site2’s park range does not overlap with Site3’s extensions.

 

Rule of thumb, order partitions in such a way that if there is an overlap in directory numbers or patterns, put the more specific match (partition) in the top (in CSS).

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NTP config

Posted: February 26, 2006 by sankar in Crabs, Infrastructure, Lab 1.5

Router 1— config)# ntp master 3 (Configures this router as NTP master with stratum 3)

Router 2— config)# ntp server #serverip# (specify IP of Router 1)

Set the clock timezone properly in each router to reflect proper time.

To remove older NTP configs, use command “no ntp” and hit enter key

To configure NTP on Cisco Callmanager

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configuration_example09186a008009470f.shtml

Method 1 (Using Cisco’s NTP service)

** Start NTP service on Callmanager (Control panel -> Services)

** Edit ntp.conf file in C:\WINNT\System32\drivers\etc and specify “server #ipaddress#” command

** Restart NTP service on Callmanager.

Method 2 (Manually sync time)

** Stop NTP service

** In command line , type command “ntpdate #ipaddress#” to sync manually

** Restart NTP service

Method 3 (Using Windows time service)

** Enable Windows Time service (Control panel -> Services)

** net time /setntp:#IPaddress#

** Restart Windows time service (W32Time)

Lab method

1. Enter NTP server IP in ntp.conf

2. Stop Network Time Protocol service

3. Open CMD mode and change to  C:\Program Files\Cisco\Xntp

4. enter the command ntpdate -b 10.1.1.1

5. Restart  Network Time Protocol service

6. Stop and disable Windows Time service

Router on a stick

Posted: February 26, 2006 by sankar in Crabs, Lab 1.4

int fa0/0

no ip add

int fa0/0.100

encap dot1q #vlanno# #native#

ip address #ip# #mask#

int fa0/0.200

encap dot1q #vlanno#

ip address #ip# #mask#

Configuring Trunk ports – Lab 1.3

Posted: February 26, 2006 by sankar in Crabs, Lab 1.3

Cat 6500

 set trunk #mod/port# dot1q on (Other options include off, negotiate etc)

 set vlan #vlanno# #mod/port# (This defines the native vlan on the trunk port)

Cat 3550

switchport trunk encapsulation dot1q (Always use this command first before configuring mode as trunk) 

switchport mode trunk

switchport trunk native vlan #vlanno#

switchport trunk allowed vlan #x,y,z#

NM-16ESW

int fa0/1

 switchport mode trunk

 no shut

 switchport trunk encap dot1q  (This command is not really needed, because nm-16esw supports only dot1q trunking)

 switchport trunk native vlan #vlanno#

Lab 1.1 – Configuring DHCP

Posted: February 26, 2006 by sankar in Crabs, Lab 1.1

WHen you copy mac-address of phone from CatOS, it puts  dashes in the macaddress (00-xx-xx-xx-xx-xx). You can use this mac-address as such in DHCP server (MS)

 When you copy mac-address of phone from IOS switch, it puts dots after 4 digits of mac-address (0000.0000.0000). YOu have to remove the dots.

 MS DHCP server will accept dashes between hex digits or hex digits with out spaces

Cat 6500

set vtp domain #domainname#

set vtp mode {server|transparent|client}

set vlan #vlanno# name #name# (Define two vlans one for voice and one for data)

set vlan #vlanno# #mod/port#

set port auxiliaryvlan #mod/port# #vlanno#

Cat 3550

config)#

vtp mode #server|transparent|client#

vtp domain #domainname#

vlan #vlanno#

    name #name#  (Sub-mode, define 2 vlans for voice and data)

int fa0/1

 switchport mode access (IOS defaults to Dynamic mode in some versions, so this command is necessary)

 switchport access vlan #datavlan#

 switchport voice vlan #voicevlan#

 spanning-tree portfast

NM-16ESW

Syntax is similar to 3550.

Log into the 3800/3700 router and configure vlans just like in a 3550 switch

Define vlans in vlan database mode.

vlan database

 vlan #vlanno# name #name# (Define voice and data vlans)

 vtp #server\transparent\client#

 vtp domain #domainname#

config)#int fa0/1
  
   switchport mode trunk 

   switchport trunk encap dot1q

   switchport voice vlan #vlanno#

   spanning-tree portfast
 

Cat 3524

vlan database

   vtp #server|transparent|client#

   vtp domain #domainname#

int fa0/1

switchport mode trunk

switchport trunk encapsulation dot1q

switchport trunk native vlan #vlanno#

switchport trunk allowed vlan x,y,z (only needed if asked)

switchport voice vlan #vlanno#