Home > HP > Printer > HP 5500 Ei 5500 Si Switch Series Configuration Guide

HP 5500 Ei 5500 Si Switch Series Configuration Guide

Add to Favourites
    Download as PDF Print this page Share this page

    Have a look at the manual HP 5500 Ei 5500 Si Switch Series Configuration Guide online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 1114 HP manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.

    View all the pages
    Page
    of 2513
    Add page 431 to Favourites
    image text
    Enable zoom 
    							 220 
[PE3-GigabitEthernet1/0/1] quit 
# Set network-side port GigabitEthernet 1/0/2 as a trunk port, assign it to VLAN 200, and apply 
uplink policy up_uplink to the outgoing traffic on the port.  
[PE3] interface gigabitethernet 1/0/2 
[PE3-GigabitEthernet1/0/2] port link-type trunk 
[PE3-GigabitEthernet1/0/2] port trunk permit vlan 200 
[PE3-GigabitEthernet1/0/2] qos apply policy up_uplink outbound 
[PE3-GigabitEthernet1/0/2] quit 
4. Configure PE 4: 
# Configure QinQ function on GigabitEthernet  1/0/2 to add outer VLAN tag 200 to the traffic 
tagged with VLAN 30.  
 system-view 
[DeviceD] interface gigabitethernet 1/0/2 
[DeviceD-GigabitEthernet1/0/2] port access vlan 200 
[DeviceD-GigabitEthernet1/0/2] qinq enable 
# Configure GigabitEthernet 1/0/1 to permit frames of VLAN 200 to pass through.  
[DeviceD] interface gigabitethernet 1/0/1 
[DeviceD-GigabitEthernet1/0/1] port link-type trunk 
[DeviceD-GigabitEthernet1/0/1] port trunk permit vlan 200
    Add page 432 to Favourites
    image text
    Enable zoom 
    							 221 
Configuring LLDP 
Overview 
Background 
In a heterogeneous network, a standard configuration exchange platform ensures that different types of 
network devices from different vendors can discover  one another and exchange configuration for the 
sake of interoperability and management.  
The IETF drafted the Link Layer Discovery Protocol (LLDP) in IEEE 802.1AB. The protocol operates on the 
data link layer to exchange device information between directly connected devices. With LLDP, a device 
sends local device information (including its major functions, management IP address, device ID, and 
port ID) as TLV (type, length, and value) triplets in LLDP Data Units (LLDPDUs) to the directly connected 
devices. At the same time, the device stores the device information received in LLDPDUs sent from the 
LLDP neighbors in a standard management informatio n base (MIB). For more information about MIBs, 
see  Network Management and Monitoring Configuration Guide . LLDP enables a network management 
system to quickly detect and identify Layer 2 network topology changes.  
Basic concepts 
LLDPDU formats 
LLDP sends device information in LLDPDUs. LLDPDUs are encapsulated in Ethernet II or Subnetwork 
Access Protocol (SNAP) frames. 
1.  Ethernet II-encapsulated LLDPDU format 
Figure 72  Ethernet II-encapsulated LLDPDU format 
 
 
Table 22 Fields in an Ethernet II-encapsulated LLDPDU 
Field Descri
ption 
Destination MAC address  MAC address to which the LLDPDU is advertised. It is fixed to 
0x0180-C200-000E, a multicast MAC address.  
 
Data = LLDPU
(1500 bytes)
0
Destination MAC address
Source MAC address
Type
15
31
FCS
    Add page 433 to Favourites
    image text
    Enable zoom 
    							 222 
Field Description 
Source MAC address MAC address of the sending port. If the port does not have a MAC address, 
the MAC address of the sending bridge is used.  
Type 
Ethernet type for the upper layer protocol. It is 0x88CC for LLDP.  
Data LLDPDU. 
FCS  Frame check sequence, a 32-bit CRC valu
e used to determine the validity of 
the received Ethernet frame. 
 
2.  SNAP-encapsulated LLDPDU format 
Figure 73  SNAP-encapsulated LLDPDU format 
 
 
Table 23 Fields in a SNAP-encapsulated LLDPDU 
Field Descri
ption 
Destination MAC address  MAC address to which the LLDPDU is advertised. It is fixed at 
0x0180-C200-000E, a multicast MAC address.  
Source MAC address  MAC address of the sending port. 
Type SNAP type for the upper layer pr
otocol. It is 0xAAAA-0300-0000-88CC for 
LLDP.  
Data LLDPDU. 
FCS  Frame check sequence, a 32-bit CRC valu
e used to determine the validity of 
the received Ethernet frame. 
 
LLDPDUs 
LLDP uses LLDPDUs to exchange information. An LLDPDU comprises multiple TLV sequences. Each TLV 
carries a type of device information, as shown in  Figure 74. 
Figure 74  LLDPDU enca

psulation format 
 
 
An LLDPDU can carry up to 28 types of TLVs. Mandatory TLVs include Chassis ID TLV, Port ID TLV, Time 
To Live TLV, and End of LLDPDU TLV. Other TLVs are optional.
    Add page 434 to Favourites
    image text
    Enable zoom 
    							 223 
TLVs 
TLVs are type, length, and value sequences that carry information elements. The type field identifies the 
type of information, the length field measures the le ngth of the information field in octets, and the value 
field contains the information itself.  
LLDPDU TLVs fall into the following categories:  
•   Basic management TLVs 
•   Organizationally (IEEE 802.1 and IEEE 802.3) specific TLVs 
•   LLDP-MED (media endpoint discovery) TLVs 
Basic management TLVs are essential to device  management. Organizationally specific TLVs and 
LLDP-MED TLVs are used for enhanced device management; they are defined by standardization or other 
organizations and are optional to LLDPDUs.  
1.  Basic management TLVs 
Table 24  list
 s the basic management TLV types. Some  of them are mandatory to LLDPDUs, that is, 
must be included in every LLDPDU. 
Table 24  Basic management TLVs 
T
ype Description Remarks 
Chassis ID  Specifies the bridge MAC address of the sending device 
Mandatory 
Port ID Specifies the ID of the sending port 
If the LLDPDU carries LLDP-MED TLVs
, the port ID TLV carries the 
MAC address of the sending port or the bridge MAC if the port 
does not have a MAC address. If  the LLDPDU carries no LLDP-MED 
TLVs, the port ID TLV carries the port name.  
Time To Live  Specifies the life of the transmitted information on the receiving 
device 
End of LLDPDU  Marks the end of the TLV sequence in the LLDPDU 
Port Description  Specifies the port description of the sending port 
Optional 
System Name  Specifies the assigned name of the sending device 
System Description  Specifies the description of the sending device 
System Capabilities Identifies the primary functions 
of the sending device and the 
enabled primary functions 
Management Address  Specifies the management address,
 and the interface number and 
object identifier (OID) associated with the address 
 
2.  IEEE 802.1 organizationally specific TLVs 
Table 25  IEEE 802.1 organizationally specific TLVs 
T
ype Description 
Port VLAN ID  Specifies the port’s VLAN identifier (P
VID). An LLDPDU carries only one TLV of 
this type. 
Port And Protocol VLAN ID  Indicates whether the device supports pr
otocol VLANs and, if so, what VLAN 
IDs these protocols will be associated  with. An LLDPDU can carry multiple 
different TLVs of this type.
    Add page 435 to Favourites
    image text
    Enable zoom 
    							 224 
Type Description 
VLAN Name Specifies the textual name of any VLAN 
to which the port belongs. An LLDPDU 
can carry multiple different TLVs of this type. 
Protocol Identity  Indicates protocols supported on the 
port. An LLDPDU can carry multiple 
different TLVs of this type. 
 
  NOTE: 
•  HP devices support only receiving protocol identity TLVs. 
•   Layer 3 Ethernet ports do not support IEEE 802.1 organizationally specific TLVs. 
 
3. IEEE 802.3 organizationally specific TLVs 
Table 26  IEEE 802.3 organizationally specific TLVs 
T
ype Description 
MAC/PHY 
Configuration/Status  Contains the bit-rate and duplex capabi
lities of the sending port, support for 
auto negotiation, enabling status of auto negotiation, and the current rate 
and duplex mode. 
Power Via MDI  Contains the power supply capability of
 the port, including the Power over 
Ethernet (PoE) type, which can be Power Sourcing Equipment (PSE) or 
Powered Device (PD), PoE mode, whether PSE power supply is supported, 
whether PSE power supply is enabled, and whether the PoE mode is 
controllable.  
Link Aggregation  Indicates the aggregation capability of the port (whether the link is capable 
of being aggregated), and the aggregatio
n status (whether the link is in an 
aggregation). 
Maximum Frame Size  Indicates the supported maximum fr
ame size. It is now the maximum 
transmission unit (MTU) of the port. 
Power Stateful Control  Indicates the power state control config
ured on the sending port, including 
the power type of the PSE or PD, PoE  sourcing and receiving priority, and 
PoE sourcing and receiving power. 
 
  NOTE: 
The Power Stateful Control TLV is defined in  IEEE P802.3at D1.0. The later versions no lon
ger support this
TLV. HP devices send this type of  TLVs only after receiving them. 
 
LLDP-MED TLVs 
LLDP-MED TLVs provide multiple advanced applications for voice over IP (VoIP), such as basic 
configuration, network policy configuration, and address and directory management. LLDP-MED TLVs 
provide a cost-effective and easy-to-use solution for deploying voice devices in Ethernet. LLDP-MED TLVs 
are shown in Tabl e  27. 
Table 27  LLDP-MED TLVs 
T
ype Description 
LLDP-MED Capabilities  Allows a network device to advertise the LLDP-MED TLVs that it 
supports.
    Add page 436 to Favourites
    image text
    Enable zoom 
    							 225 
Type Description 
Network Policy A l l o w s  a  n e t w o r k  d e v i c e  o r  t e r m i n a l  d e v i c e  t o  a d v e r t i s e  t h e  V L A N  I D  o f  
the specific port, the VLAN type, an
d the Layer 2 and Layer 3 priorities 
for specific applications. 
Extended Power-via-MDI  Allows a network device or terminal
 device to advertise power supply 
capability. This TLV is an extension of the Power Via MDI TLV. 
Hardware Revision  Allows a terminal device to advertise its hardware version. 
Firmware Revision  Allows a terminal device to advertise its firmware version. 
Software Revision  Allows a terminal device to advertise its software version. 
Serial Number  Allows a terminal device to advertise its serial number. 
Manufacturer Name  Allows a terminal device to advertise its vendor name. 
Model Name  Allows a terminal device to advertise its model name. 
Asset ID  Allows a terminal device to advertis
e its asset ID. The typical case is 
that the user specifies the asset ID for the endpoint to facilitate 
directory management and asset tracking. 
Location Identification  Allows a network device to advertise the appropriate location 
identifier information for a terminal device to use in the context of 
location-based applications. 
 
Management address 
The network management system uses the management
 address of a device to identify and manage the 
device for topology maintenance and netw ork management. The management address TLV 
encapsulates the management address. 
How LLDP works 
Operating modes of LLDP 
LLDP can operate in one of the following modes: 
•   TxRx mode —A port in this mode sends and receives LLDPDUs. 
•   Tx mode —A port in this mode only sends LLDPDUs.  
•   Rx mode —A port in this mode  only receives LLDPDUs. 
•   Disable mode—A port in this mode does not send or receive LLDPDUs. 
Each time the LLDP operating mode of a port change s, its LLDP protocol state machine re-initializes. A 
re-initialization delay, which is user configurable, pr events LLDP from being initialized too frequently at 
times of frequent changes to the operating mode. With this delay configured, before a port can initialize 
LLDP, it must wait for the specified interval after the LLDP operating mode changes.  
Transmitting LLDPDUs 
An LLDP-enabled port operating in TxRx mode or Tx mode sends LLDPDUs to its directly connected 
devices both periodically and when the local configuration changes. To prevent LLDPDUs from 
overwhelming the network during times of frequent ch anges to local device information, an interval is 
introduced between two successive LLDPDUs. 
This interval is shortened to 1 second  in either of the following cases:
    Add page 437 to Favourites
    image text
    Enable zoom 
    							 226 
•  A new neighbor is discovered. A new LLDPDU is received and carries device information new to the 
local device.  
•   The LLDP operating mode of the port changes from Disable or Rx to TxRx or Tx.  
This is the fast sending mechanism of LLDP. With this  me chani s m, a  spe ci fic  nu mber  of  L L D PD Us  are  sent 
successively at 1-second inter vals, to help LLDP neighbors discover the local device as soon as possible. 
Then, the normal LLDPDU transmit interval resumes.  
Receiving LLDPDUs 
An LLDP-enabled port that is operating in TxRx mode  or Rx mode checks the validity of TLVs carried in 
every received LLDPDU. If valid, the information is saved and an aging timer is set for it based on the time 
to live (TTL) value in the Time to Live TLV carried in the LLDPDU. If the TTL value is zero, the information 
ages out immediately.  
Protocols and standards 
•   IEEE 802.1AB-2005, Station and Media Access Control Connectivity Discovery  
•   ANSI/TIA-1057,  Link Layer Discovery Protocol for Media Endpoint Devices 
LLDP configuration task list 
When you configure LLDP, follow these guidelines: 
•  LLDP-related configurations made in Layer 2/Layer 3 Ethernet interface view take effect only on the 
current port, and those made in port group view take  effect on all ports in the current port group. 
•   Layer 3 interfaces refer to route-mode (or Layer 3)  Ethernet ports. You can set an Ethernet port to 
operate in route mode by using the  port link-mode  route  command (see  Configuring Ethernet 
in

terfaces  ). 
•   The 5500 SI Switches Series does not support Layer 3 Ethernet interfaces.  
Complete these tasks to configure LLDP: 
 
Task  Remarks 
Performing basic 
LLDP configuration Enabling LLDP 
Required 
Setting the LLDP operating mode Optional 
Setting the LLDP re-initialization delay Optional 
Enabling LLDP polling Optional 
Configuring the advertisable TLVs Optional 
Configuring the management address and its encoding format Optional 
Setting other LLDP parameters Optional 
Setting an encapsulation format for LLDPDUs Optional 
Configuring CDP compatibility  Optional 
Enabling LLDP to automatically discover IP phones Optional 
Configuring LLDP to advertise a specific voice VLAN Optional 
Dynamically advertising server-assigned VLANs through LLDP  Optional 
Configuring LLDP trapping  Optional
    Add page 438 to Favourites
    image text
    Enable zoom 
    							 227 
Performing basic LLDP configuration 
Enabling LLDP 
To make LLDP take effect on specific ports, you must enable LLDP both globally and on these ports.  
To enable LLDP: 
 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enable LLDP globally. 
lldp enable  By default, LLDP is globally 
enabled. 
3.
  Enter Ethernet interface 
view or port group view. 
• Enter Layer 2/Layer 3 Ethernet interface 
view: 
interface interface-type interface-number
 
• Enter port group view: 
port-group manual  port-group-name Use either command. 
4.
  Enable LLDP. 
lldp enable  Optional. 
By default, LLDP is enabled on 
a port. 
 
Setting the LLDP operating mode 
LLDP can operate in one of the following modes. 
•
  TxRx mode —A port in this mode sends and receives LLDPDUs. 
•   Tx mode —A port in this mode only sends LLDPDUs.  
•   Rx mode —A port in this mode  only receives LLDPDUs. 
•   Disable mode—A port in this mode does not send or receive LLDPDUs. 
To set the LLDP operating mode: 
 
Step Command Remarks 
1.   Enter system view. 
system-view  N/A 
2.  Enter Ethernet interface 
view or port group view. 
• Enter Layer 2/Layer 3 Ethernet interface view: 
interface interface-type interface-number  
• Enter port group view: 
port-group manual  port-group-name Use either command. 
3.
  Set the LLDP operating 
mode.  lldp admin-status 
{ disable  | rx |  tx | txrx  }  Optional. 
TxRx by default. 
 
Setting the LLDP re-initialization delay 
When LLDP operating mode changes on a port, the port
 initializes the protocol state machines after a 
certain delay. By adjusting the LLDP re-initialization delay, you can avoid frequent initializations caused 
by frequent changes to the LLDP operating mode on a port.
    Add page 439 to Favourites
    image text
    Enable zoom 
    							 228 
To set the LLDP re-initialization delay for ports:  
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Set the LLDP re-initialization 
delay.  lldp timer reinit-delay
 delay   Optional. 
2 seconds by default. 
 
Enabling LLDP polling 
With LLDP polling enabled, a device periodically sear
ches for local configuration changes. On detecting 
a configuration change, the device sends LLDPDUs to inform neighboring devices of the change. 
To enable LLDP polling: 
 
Step Command Remarks 
1.   Enter system view. 
system-view  N/A 
2.  Enter Ethernet interface 
view or port group view. 
• Enter Layer 2/Layer 3 Ethernet interface view: 
interface interface-type interface-number  
• Enter port group view: 
port-group manual  port-group-name Use either command. 
3.
  Enable LLDP polling and 
set the polling interval.  lldp check-change-interval 
interval  Disabled by default. 
 
Configuring the advertisable TLVs 
To configure the advertisable LLDPDU TLVs on the specified port or ports:  
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter Ethernet interface 
view or port group view. 
• Enter Layer 2/Layer 3 Ethernet interface 
view: 
interface interface-type interface-number  
• Enter port group view: 
port-group manual  port-group-name Use either command. 
3.
  Configure the 
advertisable TLVs (Layer 
2 Ethernet interface view 
or port group view).  lldp tlv-enable
 { basic-tlv { all | port-description  
|  system-capability  | system-description  | 
system-name  } | dot1-tlv { all | port-vlan-id  | 
protocol-vlan-id  [ vlan-id ] | vlan-name  
[  vlan-id  ] } | dot3-tlv  { all |  link-aggregation | 
mac-physic  | max-frame-size  | power  } | 
med-tlv  { all | capability |  inventory | 
location-id  { civic-address  device-type 
country-code  { ca-type ca-value  }& | 
elin-address  tel-number  } | network-policy  | 
power-over-ethernet } }   Optional. 
By default, all types of LLDP 
TLVs except location 
identification TLVs are 
advertisable on a Layer 2 
Ethernet port.
    Add page 440 to Favourites
    image text
    Enable zoom 
    							 229 
Step Command Remarks 
4.  Configure the 
advertisable TLVs (Layer 
3 Ethernet interface 
view) .  lldp 
tlv-enable  { basic-tlv  { all  | port-description  
|  system-capability  | system-description  | 
system-name  } | dot3-tlv { all | 
link-aggregation |  mac-physic | 
max-frame-size  | power  } | med-tlv  { all  | 
capability  | inventory  | location-id 
{  civic-address  device-type country-code  
{  ca-type ca-value  }& | elin-address 
tel-number  } | power-over-ethernet  } }   Optional. 
By default, all types of LLDP 
TLVs, except IEEE 802.1 
organizationally specific 
TLVs, network policy TLVs, 
and location identification 
TLVs, are advertisable on a 
Layer 3 Ethernet port. 
 
Configuring the management address and its encoding format 
LLDP encodes management addresses in numeric or 
character string format in management address 
TLVs.  
By default, management addresses are encoded in  numeric format. If a neighbor encoded its 
management address in character string format, yo u must configure the encoding format of the 
management address as string on the connecting po rt to guarantee normal communication with the 
neighbor.  
To configure a management address to be advertised and its encoding format on a port or group of 
ports: 
 
Step Command Remarks 
1.   Enter system view. 
system-view  N/A 
2.  Enter Ethernet interface 
view or port group view. 
• Enter Layer 2/Layer 3 Ethernet 
interface view: 
interface interface-type 
interface-number 
• Enter port group view: 
port-group manual 
port-group-name   Use either command. 
3.
  Allow LLDP to advertise 
the management 
address in LLDPDUs and 
configure the advertised 
management address.  lldp management-address-tlv 
[ ip-address 
]  Optional. 
By default, the management address is 
sent through LLDPDUs. 
•
 For a Layer 2 Ethernet port, the 
management address is the main IP 
address of the lowest-ID VLAN 
carried on the port. If none of the 
carried VLANs is assigned an IP 
address, no management address 
will be advertised.  
• For a Layer 3 Ethernet port, the 
management address is its own IP 
address. If no IP address is 
configured for the Layer 3 Ethernet 
port, no management address will 
be advertised.
    All HP manuals Comments (0)

    Related Manuals for HP 5500 Ei 5500 Si Switch Series Configuration Guide