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HP 5500 Ei 5500 Si Switch Series Configuration Guide

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•  The MAC address of IP phone A is 001 1-1100-0001. The phone connects to a downstream device 
named PC A whose MAC address is 0022-1 100-0002 and to GigabitEthernet 1/0/1 on an 
upstream device named Device A. 
•   The MAC address of IP phone B is 001 1-2200-0001. The phone connects to a downstream device 
named PC B whose MAC address is 0022-2200-0002 and to GigabitEthernet 1/0/2 on Device A. 
•   Device A uses voice VLAN 2 to transmit voice packets for IP phone A and uses voice VLAN 3 to 
transmit voice packets for IP phone B. 
•   Configure GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 to operate in automatic voice VLAN 
assignment mode. In addition, if one of them has not received any voice packet in 30 minutes, the 
port is removed from the corresponding voice VLAN automatically. 
Figure 50  Network diagram 
 
 
Configuration procedure 
# Create VLAN 2 and VLAN 3. 
 system-view 
[DeviceA] vlan 2 to 3 
Please wait... Done. 
# Set the voice VLAN aging time to 30 minutes.  
[DeviceA] voice vlan aging 30 
# Since GigabitEthernet 1/0/1 might receive both voice traffic and data traffic at the same time, to 
ensure the quality of voice packets and effective bandwidth use, configure voice VLANs to operate in 
security mode. Configure the voice VLANs to transmit only voice packets. By default, voice VLANs 
operate in security mode. (Optional) 
[DeviceA] voice vlan security enable 
# Configure the allowed OUI addresses as MAC addresses prefixed by 001 1-110 0 - 0 0 0 0  o r  
001 1-2200-0000. In this way, Device A identifi es packets whose MAC addresses match any of the 
configured OUI addresses as voice packets. 
[DeviceA] voice vlan mac-address 0011-1100-0001 mask ffff-ff00-0000 desc\
ription IP phone 
A 
[DeviceA] voice vlan mac-address 0011-2200-0001 mask ffff-ff00-0000 desc\
ription IP phone 
B 
# Configure GigabitEthernet 1/0/1 as a hybrid port. 
[DeviceA] interface gigabitethernet 1/0/1
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[DeviceA-GigabitEthernet1/0/1] port link-type hybrid 
# Configure GigabitEthernet 1/0/1 to operate in automatic voice VLAN assignment mode. By default, 
a port operates in automatic voice VLAN assignment mode. (Optional) 
[DeviceA-GigabitEthernet1/0/1] voice vlan mode auto 
# Configure VLAN 2 as the voice VLAN for GigabitEthernet 1/0/1. 
[DeviceA-GigabitEthernet1/0/1] voice vlan 2 enable 
[DeviceA-GigabitEthernet1/0/1] quit 
# Configure GigabitEthernet 1/0/2. 
[DeviceA] interface gigabitethernet 1/0/2 
[DeviceA-GigabitEthernet1/0/2] port link-type hybrid 
[DeviceA-GigabitEthernet1/0/2] voice vlan mode auto 
[DeviceA-GigabitEthernet1/0/2] voice vlan 3 enable 
Verifying the configurations 
# Display the OUI addresses, OUI address masks, and description strings. 
 display voice vlan oui 
Oui Address     Mask            Description 
0001-e300-0000  ffff-ff00-0000  Siemens phone 
0003-6b00-0000  ffff-ff00-0000  Cisco phone 
0004-0d00-0000  ffff-ff00-0000  Avaya phone 
0011-1100-0000  ffff-ff00-0000  IP phone A 
0011-2200-0000  ffff-ff00-0000  IP phone B 
0060-b900-0000  ffff-ff00-0000  Philips/NEC phone 
00d0-1e00-0000  ffff-ff00-0000  Pingtel phone 
00e0-7500-0000  ffff-ff00-0000  Polycom phone 
00e0-bb00-0000  ffff-ff00-0000  3com phone 
# Display the states of voice VLANs. 
 display voice vlan state 
Maximum of Voice VLANs: 8 
 Current Voice VLANs: 2 
 Voice VLAN security mode: Security 
 Voice VLAN aging time: 30 minutes 
 Voice VLAN enabled port and its mode: 
PORT                        VLAN        MODE        COS        DSCP 
 -------------------------------------------------------------------- 
GigabitEthernet1/0/1          2          AUTO        6          46 
GigabitEthernet1/0/2          3          AUTO        6          46 
Manual voice VLAN assignment mode configuration example 
Network requirements 
As shown in Figure 51, 
•   Cr
eate VLAN 2 and configure it as a voice VLAN that permits only voice traffic to pass through. 
•   The IP phones send untagged voice traffic. Co nfigure GigabitEthernet 1/0/1 as a hybrid port.
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•  Configure GigabitEthernet 1/0/1 to operate in manual voice VLAN assignment mode. Configure 
GigabitEthernet 1/0/1 to allow voice traffic with an OUI address of 001 1-2200-0000, a mask of 
ffff-ff00-0000, and a description string of test  to be forwarded in the voice VLAN. 
Figure 51  Network diagram 
 
 
Configuration procedure 
# Configure the voice VLAN to operate in security mode. A voice VLAN operates in security mode by 
default. (Optional) 
 system-view 
[DeviceA] voice vlan security enable 
# Add a recognizable OUI address 0011-2200-0000. 
[DeviceA] voice vlan mac-address 0011-2200-0000 mask ffff-ff00-0000 desc\
ription test 
# Create VLAN 2.  
[DeviceA] vlan 2 
[DeviceA-vlan2] quit 
# Configure GigabitEthernet 1/0/1 to operate in manual voice VLAN assignment mode. 
[DeviceA] interface gigabitethernet 1/0/1 
[DeviceA-GigabitEthernet1/0/1] undo voice vlan mode auto 
# Configure GigabitEthernet 1/0/1 as a hybrid port. 
[DeviceA-GigabitEthernet1/0/1] port link-type hybrid 
# Configure the voice VLAN (VLAN 2) as the PVID of GigabitEthernet 1/0/1 and configure 
GigabitEthernet 1/0/1 to permit the voice traffic of VLAN 2 to pass through untagged. 
[DeviceA-GigabitEthernet1/0/1] port hybrid pvid vlan 2 
[DeviceA-GigabitEthernet1/0/1] port hybrid vlan 2 untagged 
# Enable voice VLAN on GigabitEthernet 1/0/1. 
[DeviceA-GigabitEthernet1/0/1] voice vlan 2 enable 
Verifying the configurations 
# Display the OUI addresses, OUI address masks, and description strings. 
 display voice vlan oui 
Oui Address     Mask            Description 
0001-e300-0000  ffff-ff00-0000  Siemens phone 
0003-6b00-0000  ffff-ff00-0000  Cisco phone 
0004-0d00-0000  ffff-ff00-0000  Avaya phone 
0011-2200-0000  ffff-ff00-0000  test 
00d0-1e00-0000  ffff-ff00-0000  Pingtel phone
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0060-b900-0000  ffff-ff00-0000  Philips/NEC phone 
00e0-7500-0000  ffff-ff00-0000  Polycom phone 
00e0-bb00-0000  ffff-ff00-0000  3com phone 
# Display the states of voice VLANs. 
 display voice vlan state 
Maximum of Voice VLANs: 8 
 Current Voice VLANs: 1 
 Voice VLAN security mode: Security 
 Voice VLAN aging time: 1440 minutes 
 Voice VLAN enabled port and its mode: 
 PORT                        VLAN        MODE        COS        DSCP 
 -------------------------------------------------------------------- 
 GigabitEthernet1/0/1        2          MANUAL        6          46     \
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Configuring GVRP 
The Generic Attribute Registration Protocol (GARP) provides a generic framework for devices in a 
switched LAN, such as end stations and switches, to register and deregister attribute values. The GARP 
VLAN Registration Protocol (GVRP) is a GARP application that registers and deregisters VLAN attributes. 
GVRP uses the operating mechanism of GARP to ma intain and propagate dynamic VLAN registration 
information for GVRP devices on the network.  
Overview 
GARP 
GARP provides a mechanism that allows participants  in a GARP application to distribute, propagate, 
and register—with other participants in a LAN—the attrib utes specific to the GARP application, such as 
VLAN or multicast address attributes.  
How GARP works 
Each port that participates in a GARP application (GVRP, for example) is a GARP participant.  
GARP enables GARP participants to propagate attribut e values throughout the switched LAN. As shown 
in  Figure 52 , a G
 ARP participant registers and deregist ers its attribute values with other GARP 
participants by sending and withdrawing declarations,  and registers and deregisters the attribute values 
of other participants according to the declarations and withdrawals that it has received.  
Figure 52  How GARP works 
 
 
For example, a GVRP-enabled port registers and deregisters VLAN in the following cases. 
•   When the port receives a VLAN attribute declaratio n, it registers the VLAN attribute and joins the 
VLAN. 
•   When the port receives a VLAN withdrawal, it deregisters the VLAN and leaves the VLAN. 
GARP messages 
A GARP participant exchanges information with othe r GARP participants by sending GARP messages:  
Join, Leave, and LeaveAll. As a GARP application, GVRP also uses GARP messages for information 
exchange.  
•   Join messages
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A GARP participant sends Join messages when it wishes to declare its attribute values or receives 
Join messages from other GARP participants.  
Join messages fall into JoinEmpty and JoinIn. A  GARP participant sends JoinEmpty messages to 
declare attribute values that it has not register ed. It sends JoinIn messages to declare attribute 
values that it has registered. 
•   Leave messages 
A GARP participant sends Leave messages when it wi shes to withdraw declarations of its attribute 
values (because, for example, it has deregistered  its attribute values), or receives Leave messages 
from other participants.  
Leave messages fall into LeaveEmpty and Leav eIn. A GARP participant sends LeaveEmpty 
messages to withdraw declarations of the attribute values that it has not registered. It sends LeaveIn 
messages to withdraw  declarations of the attribute va lues that it has registered. 
•   LeaveAll messages 
A GARP participant sends a LeaveAll me ssage when it declares that it is deregistering all attribute 
values or receives LeaveAll messages from other  participants. If any participants want to maintain 
the registration for a particular attribute value, they must send a Join message.  
GARP timers 
HPs implementation of GARP uses the following timers to control GARP message transmission: 
•   Hold timer 
The Hold timer sets the delay that a GARP par ticipant waits before sending a Join or Leave 
message. 
When an attribute value changes or a Join or  Leave message arrives, the GARP participant does 
not send the message immediately. Rather, it  assembles Join and Leave messages in the least 
number of GARP PDUs, and sends them out when  the Hold timer expires. This timer reduces the 
number of GARP PDUs and saves bandwidth.  
•   Join timer 
A GARP participant might declare an  attribute twice to ensure reliable transmission. The Join timer 
sets the interval between the two declarations. 
A GARP participant starts a Join timer when it de clares an attribute value or receives a JoinIn 
message for the attribute value. If the GARP participant does not receive any declaration for the 
attribute value when the Join timer expire s, it re-declares the attribute value.  
Because all attributes of a GARP participant share th e same Join timer, you must set the Join timer 
long enough so that all attributes  can be sent out in one declaration. 
•   Leave timer 
A GARP participant starts a Leave timer when it re ceives a Leave message for an attribute value. 
If the GARP participant receives no Join message for the attribute value before the timer expires, it 
deregisters the attribute value. 
•   LeaveAll timer 
When a GARP application is enabled, a LeaveAll  timer starts. The GARP participant sends a 
LeaveAll message when the timer expires. Then, th e LeaveAll timer restarts to begin a new cycle. 
The LeaveAll timer and all other GARP timers also  restart when the GARP participant receives a 
LeaveAll message.  
When you configure GARP timers, follow these guidelines: 
•   The settings of GARP timers apply to all GARP applications, such as GVRP, on a LAN.
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•  On a GARP-enabled network, each port maintain s its own Hold, Join, and Leave timers, but only 
one LeaveAll timer is maintained on each device. This LeaveAll timer applies to all ports on the 
device.  
•   The value ranges for the Hold, Join, Leave, and LeaveAll timers are dependent on one another. 
See  Tabl e  2 0  
for their dependencies. 
•   Set the LeaveAll timer greater than any Leave timer and not smaller than its default value, 1000 
centiseconds. Each time a LeaveAll timer expires, a network-wide re-join occurs.  
•   A device can send LeaveAll messages at the interval set by its LeaveAll timer or the LeaveAll timer 
of another device on the network, whichever is smaller. This is because each time a device on the 
network receives a LeaveAll message, it resets its LeaveAll timer. 
GARP PDU format  
Figure 53  GARP PDU format 
 
 
As shown in Figure 53, G ARP PDUs are encapsulated in IEEE 802.3 Ethernet frames.  
Table 19  GARP PDU fields 
Field Descri
ption   Value 
Protocol ID  Protocol identifier for GARP  0x0001 
Message One or multiple messages, each of which 
contains an attribute type and an attribute 
list
  N/A 
End mark  Indicates the end of a GARP PDU 
0x00 
Attribute type  Defined by the GARP application 
 0x01 for GVRP, which indicates the VLAN 
ID attribute
 
Attribute list  Contains one or multiple attributes
 N/A 
Attribute  Consists of an attribute length, an attribute 
event, and an attribute value
 N/A 
Attribute length 
Length of an attribute, inclusive of the 
attribute length field 
  2 to 255 (in bytes)
 
Ethernet frame
Attribute lengthAttribute eventAttribute value
DASALengthDSAPSSAPCtrlGARP PDU
Attribute listAttribute type
...Message nMessage 1Protocol IDEnd mark
...Attribute 1Attribute nEnd mark
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Field Description  Value 
Attribute event  Event that the attribute describes 
 
• 0x00—LeaveAll event 
• 0x01 —JoinEmpty event 
• 0x02 —JoinIn event 
• 0x03 —LeaveEmpty event 
• 0x04—LeaveIn event 
• 0x05 —Empty event  
Attribute value  Attribute value 
 VLAN ID for GVRP 
If the value of the attribute event field is 
0x00 (LeaveAll event), the attribute value 
field is invalid.
 
 
The destination MAC addresses of GARP messages are multicast MAC addresses, and vary with GARP 
applications. For example, the destination MAC address of GVRP is 01-80-C2-00-00-21.  
GVRP 
GVRP overview 
As a GARP application, GVRP uses the operatin g mechanism of GARP to maintain and propagate 
dynamic VLAN registrations throughout a switched LAN.  
In a switched LAN, each GVRP-enabled switch send s and receives VLAN declarations and withdrawals 
from other GVRP-enabled switches, and dynamically updates its local database, including active VLAN 
members and through which port each VLAN member can be reached. This makes sure that all 
GVRP-enabled switches in a LAN maintain the same VLAN information.  
The VLAN information propagated by GVRP includ es not only manually configured static VLAN 
information but also dynamic VLAN information from other switches.  
GVRP registration modes 
GVRP is available on trunk ports. It provides the following registration modes: 
•   Normal  mode —Performs dynamic VLAN registrations and deregistrations on the trunk port, and 
sends declarations and withdrawals for dynamic and static VLANs. VLANs manually configured 
are called static VLANs, and VLANs created by GVRP are called dynamic VLANs. 
•   Fixed  mode — D i s a b l e s  t h e  t r u n k  p o r t  t o  re g i s t e r  o r  wi t h d ra w  d yn a m i c  V L A N  i n f o r m a t i o n,  b u t  a l l ow s  
the port to send declarations for static VLANs. A tr unk port in this mode carries only static VL ANs, 
even if it has been assigned to all VLANs.  
•   Forbidden  mode —Disables the trunk port to register or  withdraw dynamic VLAN information, and 
allows the port to send declarations only for VLAN 1. A trunk port in this mode carries only VLAN 
1 even if it has been assigned to any other VLANs. 
Protocols and standards 
IEEE 802.1Q,  Virtual Bridged Local Area Networks  
GVRP configuration task list 
When you configure GVRP, follow these guidelines:
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•  GVRP configuration made in Ethernet interface  view or Layer 2 aggregate interface view takes 
effect on the current interface only; GVRP configuration made in port group view takes effect on all 
the member ports in the group.  
•   GVRP configuration made on a member port in an aggregation group takes effect only after the 
port is removed from the aggregation group. 
Complete these tasks to configure GVRP: 
 
Task Remarks 
Configuring GVRP functions  Required 
Configuring the GARP timers Optional 
 
Configuring GVRP functions 
Before enabling GVRP on a port, you must enable GVRP globally. In addition, you can configure GVRP 
only on trunk ports, and you must assign the involved trunk ports to all dynamic VLANs.  
Configuration restrictions and guidelines 
•  GVRP is mutually exclusive with service loopback.  
•   GVRP can work with STP, RSTP, or MSTP CIST but not PVST. When GVRP runs on the CIST, blocked 
ports on the CIST cannot receive or send GVRP packets. For more information about STP, RSTP, 
MSTP CIST, and PVST, see  Configuring spanning tree protocols . 
•   Do not ena

ble both GVRP and remote port mirror ing. Otherwise, GVRP may register the remote 
probe VLAN to unexpected ports, resulting in unde sired duplicates to be received by the monitor 
port. For more information about port mirroring, see  Network Management and Monitoring 
Configuration Guide . 
•   Enabling GVRP on a Layer 2 aggregate interfac e enables both the aggregate interface and all 
selected member ports in the corresponding li nk aggregation group to participate in dynamic 
VLAN registration and deregistration. 
Configuration procedure 
To configure GVRP functions on a trunk port:   
Step Command Remarks 
1.   Enter system view. 
system-view  N/A 
2.  Enable GVRP globally. 
gvrp  Globally disabled by default. 
3.  Enter Ethernet interface 
view, Layer 2 aggregate 
interface view, or port 
group view. 
• Enter Ethernet interface view or Layer 
2 aggregate interface view: 
interface  interface-type 
interface-number 
•  Enter port group view: 
port-group manual  port-group-name Use either command.
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Step Command Remarks 
4.  Configure the link type of 
the ports as trunk.  port link-type trunk  Access by default.  
For more information about the 
port link-type trunk
 command, 
see  Layer 2—LAN Switching 
Command Reference .  
5.  Assign the trunk ports to 
all VLANs.  port trunk permit vlan all  By default, a trunk port is 
assigned to VLAN 1 only.  
For more information about the 
port trunk permit vlan all
 
command, see  Layer 2—LAN 
Switching Command Reference . 
 
6.  Enable GVRP on the 
ports.   gvrp 
Disabled by default.
 
7.  Configure the GVRP 
registration mode on the 
port.   gvrp registration 
{ fixed |  forbidden | 
normal  }  Optional. 
normal
 by default.
 
 
Configuring the GARP timers 
To configure the GARP timers:  
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Configure the GARP 
LeaveAll timer.  garp timer leaveall 
timer-value Optional. 
1000 centiseconds by default.  
The LeaveAll timer applies to all 
ports.  
3.
  Enter Ethernet interface view, 
Layer 2 aggregate interface 
view, or port group view. 
• Enter Ethernet interface view or 
Layer 2 aggregate interface view:
 
interface  interface-type 
interface-number 
•  Enter port group view: 
port-group manual 
port-group-name   Use either command. 
 
4.  Configure the Hold timer. 
garp timer hold timer-value   Optional. 
10 centiseconds by default. 
5.
  Configure the Join timer. 
garp timer join timer-value   Optional. 
20 centiseconds by default. 
6.
  Configure the Leave timer. 
garp timer leave timer-value   Optional. 
60 centiseconds by default. 
 
As shown in 
Tabl e  2 0, the  value ranges for GARP timers are dependent on one another; use the 
following guidelines to configure GARP timers: 
•   If you want to set a value beyond the value range for a timer, you can change the value range by 
tuning the value of another related timer.
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