mhs presentation 2-20-08 v2 final
TRANSCRIPT
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Monitored Hot Standby
(MHS) Solution
Monitored Hot StandbyMonitored Hot Standby
(MHS) Solution(MHS) Solution
EXEX
--i Seriesi Series
February 2008February 2008
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EX-i Series
Monitored Hot Standby Kit
EXEX--i Seriesi Series
Monitored Hot Standby KitMonitored Hot Standby KitDescription
Single fault 1+1 equipment protectionCurrently available for EX-2.4i-16, EX-5i-16 and EX-5i-F
MHS Kit Contents1 RU Exalt MHS Panel4x T1/E1 protection cables
1x synchronization cable (CAT-5)1x secondary AUX management cable (CAT-5)
1x primary management control cable (serial)2x RF cables
MHS Cable Kit Contents4xT1/E1 protection cables for configurations greater than the basemodel 4xT1/E1None needed for EX-5i-F
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Monitored Hot Standby
Block Level Diagram
Monitored Hot StandbyMonitored Hot Standby
Block Level DiagramBlock Level Diagram
Radio ASecondary
Radio APrimary
Radio BSecondary
Radio BPrimary
RFSwitch
RFSwitchT1/E1 T1/E1
Local LAN Local LAN
Sync
Sync
Control
Control
Ethernet
switchor Router
Ethernet
switchor RouterExalt EX-i Series radios
Exalt MHS kit
Customer provided equipment
Customer provided cabling
Note: MHS protectionis not available for V.35ports on the EX-5i-F
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Monitored Hot Standby
Endpoint Wiring Diagram
Monitored Hot StandbyMonitored Hot Standby
Endpoint Wiring DiagramEndpoint Wiring Diagram
RF Switch
T1/E1 protection cable
Note: MHS protectionis not available for V.35ports on the EX-5i-F
Control and synccabling
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Exalt MHS PanelExalt MHS PanelExalt MHS PanelMHS Panel
24 or 48VDC Operation
MHS Panel preconfigured for24VDC operationMHS Panel must be modified priorto installation for 48VDC operation
5 rack spaces totalMount MHS panel in central 1RUPrimary radio mounts below MHSpanel. Occupies 1.5RU.Secondary radio mounts aboveMHS panel. Occupies 1.5RU.Extra 0.5RU airspace above andbelow the system for ventilation
Cut this wire
For 48VDC operation
Secondary Radio
Primary Radio
RF switch
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Exalt MHS Wiring DetailExalt MHS Wiring DetailExalt MHS Wiring DetailT1/E1 cables
All ports connected in parallel via
T1/E1 protection Y cable.
4 cables provided in kit for baseconfiguration. Up to 16xT1/E1 withoptional 4x cable kit accessory.
Female RJ45 connector in protectionY cable allows extension of T1/E1
cabling to existing DSX frame ortermination.
MHS RF Switch Control
9 pin connector cable (part of MHSpanel wire harness) connected tosecondary radio ALARMS port
ALARMS port on secondary radio isunavailable for normal use. ALARMSport of primary radio operatesnormally
Port 1
Port 1
Port 1 interfacesconnected via
protection Y cable
Female RJ45 connectorfor T1/E1 wiring
ALARMS port insecondary radioused for RF switchcontrol
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Exalt MHS Wiring DetailExalt MHS Wiring DetailExalt MHS Wiring DetailPrimary management control
The serial cable connects Console
ports on both primary and secondaryradios
Secondary management controlGray CAT-5 cables connect AUXEthernet ports on both primary andsecondary radios
Used for redundancySynchronization
Yellow CAT-5 cable connects SYNCOUT in primary radio to SYNC in ofsecondary radioPrimary radio SYNC IN may be used
as input from external ExaltSync GPSor collocated EX-i Series radioSYNC OUT of secondary radio maybe used to sync collocated radios
Console portPrimarymanagement control
AUX Ethernet portSecondarymanagement control
Sync portsPrimary: SYNC OUTSecondary: SYNC IN
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MHS Configuration PageMHS Configuration PageMHS Configuration Page
Radios should be configured
prior to physical installationMHS default is Disable
Partner IP Address
Used to identify the primary orsecondary partner for sameendpoint
MHS Designation
Used to identify MHS primaryor secondary role
Physical wiring must beaccording to the assigned
role
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MHS Configuration PageMHS Configuration PageMHS Configuration PageAdditional MHS features
Lock On can force the online or standby
behavior of a primary or secondary radioNormal: normal MHS behavior
Online: force Online status
Standby: force Standby status
Lock On Timeout
Time duration of lock on
20 sec, 10 sec, or infiniteUseful when performing maintenance ortesting protection setup
Should be set to default for normaloperation
Lock On: No lock on (Normal)
Lock On Timeout: 20 seconds
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MHS Status PageMHS Status PageMHS Status PagePartner IP Address
IP address for primary or secondary MHS
partner for same endEntered in MHS Configuration screen
Designation
MHS primary or secondary role
Entered in MHS Configuration screen
Radio StatusIndicates whether a primary or secondaryradio for a particular endpoint is eitheronline or standby
Protection Link Status
Verifies protection links are operating
normally
Configuration status
Validates proper configuration of MHSparameters
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MHS Operation
Normal State
MHS OperationMHS Operation
Normal StateNormal State
OnlineNormalPrimary
StandbyNormalSecondary
StatusConditionRadio A
Radio A
Secondary
Radio A
Primary
Radio B
Secondary
Radio B
Primary
T1/E1 T1/E1
Local LAN Local LAN
Sync
Sync
Control
Control
Ethernetswitch
or Router
Ethernetswitch
or Router
OnlineT1/E1path
Onlinedata path
OnlineNormalPrimary
StandbyNormalSecondary
StatusConditionRadio B
active ports
Linkbeat always on
T1/E1
ports intri-statemode
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MHS Operation
Radio Failure Scenario
MHS OperationMHS Operation
Radio Failure ScenarioRadio Failure Scenario
Radio A
Secondary
Radio A
Primary
Radio B
Secondary
Radio B
Primary
T1/E1 T1/E1
Local LAN
Sync
Sync
Control
Control
Ethernetswitch
or Router
Ethernetswitch
or Router
OnlineT1/E1path
Onlinedata
path
T1/E1 and LAN traffic isrouted to secondary RadioA and RF switched within~5 sec*. Only the endpointexperiencing the problemis switched
OfflineCriticalAlarm
Primary
OnlineNormalSecondary
StatusConditionRadio A
OnlineNormalPrimary
StandbyNormalSecondary
StatusConditionRadio B
Complete system failuregenerates critical alarm insecondary radio and SW
control initiates switchover
active ports
T1/E1portsout oftri-statemode
Data internally routed to port
* Approximate switching time in first release.
Switch/Router updatesMAC table andforwards packets tosecondary radioEthernet port
Loss of linkbeat
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MHS Operation
Normal State After Switchover
MHS OperationMHS Operation
Normal State After SwitchoverNormal State After Switchover
Radio A
Secondary
Radio A
Primary
Radio B
Secondary
Radio B
Primary
T1/E1 T1/E1
Local LAN Local LAN
Sync
Sync
Control
Control
Ethernetswitch
or Router
Ethernetswitch
or Router
OnlineT1/E1
path
Online
datapath
Critical Alarm Clears
StandbyNormalPrimary
OnlineNormalSecondary
StatusConditionRadio A
OnlineNormalPrimary
StandbyNormalSecondary
StatusConditionRadio B
T1/E1 and LAN routeis maintained and is notswitched until anothercritical event occurs.*
* It is possible to manually force the T1/E1 and LAN traffic back to the original primary route, butin 1+1 protection this additional switching would create an unnecessary temporary traffic outage.active ports