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Operation Manual – Ethernet Interface
H3C S9500 Series Routing Switches Table of Contents
i
Table of Contents
Chapter 1 Ethernet Interface Configuration ...............................................................................1-1
1.1 Ethernet Interface Configuration........................................................................................1-1
1.1.1 Configuration Task List ...........................................................................................1-1
1.1.2 Configuring LAN/WAN Mode for a 10GE Interface.................................................1-1
1.1.3 Basic Ethernet Interface Configuration...................................................................1-3
1.1.4 Configuring Flow Control on an Ethernet Interface.................................................1-4
1.1.5 Configuring Physical State Change Suppression on an Ethernet Interface...........1-5
1.1.6 Configuring Loopback Testing on an Ethernet Interface.........................................1-5
1.1.7 Configuring a Manual Port Group ...........................................................................1-6
1.1.8 Configuring Traffic Suppression for an Ethernet Interface......................................1-7
1.1.9 Setting the Interval for Collecting Ethernet Interface Statistics...............................1-8
1.1.10 Setting the Maximum Jumbo Frame Size for Ethernet Interfaces........................1-8
1.1.11 Configuring the MDI Mode of an Ethernet Interface .............................................1-9
1.1.12 Configuring the Source MAC Address for an Interface.......................................1-10
1.2 Displaying and Maintaining Ethernet Interfaces..............................................................1-11
Operation Manual – Ethernet Interface
H3C S9500 Series Routing Switches Chapter 1 Ethernet Interface Configuration
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Chapter 1 Ethernet Interface Configuration
When configuring Ethernet interfaces, go to these sections for information you are
interested in:
z Ethernet Interface Configuration
z Displaying and Maintaining Ethernet Interfaces
1.1 Ethernet Interface Configuration
1.1.1 Configuration Task List
Complete the following tasks to configure an Ethernet interface:
Task Remarks
Configuring LAN/WAN Mode for a 10GE Interface Optional
Basic Ethernet Interface Configuration Optional
Configuring Flow Control on an Ethernet Interface Optional
Configuring Physical State Change Suppression on an
Ethernet Interface
Optional
Configuring Loopback Testing on an Ethernet Interface Optional
Configuring a Manual Port Group Optional
Configuring Traffic Suppression for an Ethernet Interface Optional
Setting the Interval for Collecting Ethernet Interface Statistics Optional
Setting the Maximum Jumbo Frame Size for Ethernet
Interfaces
Optional
Configuring the MDI Mode of an Ethernet Interface Optional
Configuring the Source MAC Address for an Interface Optional
1.1.2 Configuring LAN/WAN Mode for a 10GE Interface
I. Introduction to LAN/WAN mode
According to the physical characteristics, a ten-GigabitEthernet (10GE) interface can
work in LAN or WAN mode.
z LAN mode. 10GE interfaces operating in this mode are used to provide network
access for Ethernets. They receive and forward Ethernet packets.
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H3C S9500 Series Routing Switches Chapter 1 Ethernet Interface Configuration
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z WAN mode. 10GE interfaces operating in this mode are used to provide network
access for SDH networks. They receive and forward synchronous digital hierarchy
(SDH) packets across point-to-point connections only.
Note:
Although 10GE interfaces operating in WAN mode encapsulate Ethernet packets as
SDH frames, and 10G packets over SDH (POS) interfaces encapsulate PPP packets
as SDH frames, the two types of SDH frames differ in frame format. Therefore, a 10GE
interface operating in WAN mode cannot communicate a 10G POS interface.
II. Introduction to J0/J1 overhead byte
SDH frames have diversified overhead bytes, which accomplish the operation and
maintenance functions such as hierarchical management of the transport network. J0
and J1 are used to provide internetworking support between different countries, regions,
or devices of different manufacturers.
The regenerator section trace byte J0 is usually set to a section access point identifier.
The sending end keeps connected with the receiving end by sending this byte
repeatedly.
The path trace byte J1, usually set to a high-order path access point identifier, functions
in a similar to keep the connection with the receiving end of the path.
To ensure smooth communication, the J0 and J1 bytes should be matched respectively
at the sending and receiving ends. For details about SDH and SDH overhead bytes,
refer to related documents.
III. Configure a 10GE interface to operate in LAN/WAN mode
Follow these steps to configure a 10GE interface to operate in LAN/WAN mode:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter ten-GigabitEthernet
interface view
interface
ten-gigabitEthernet
interface-number
—
Configure the 10GE
interface to operate in
LAN/WAN mode
port-mode { lan | wan }
Optional
By default, a 10GE
interface operates in LAN
mode.
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H3C S9500 Series Routing Switches Chapter 1 Ethernet Interface Configuration
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To do… Use the command… Remarks
Configure a value for
J0/J1 bytes when the
10GE interface operates
in WAN mode.
flag { j0 | j1 } sdh
flag-value
Optional
By default, the value of
the J0/J1 bytes is 0.
Note:
z The flag command is available only when the 10GE interface is operating in WAN
mode.
z WAN mode is not supported on LSB1XP4CA, LSB1XK1DB, and LSB1XP4B
boards.
1.1.3 Basic Ethernet Interface Configuration
Three types of duplex modes are available for Ethernet interfaces:
z Full-duplex mode (full). Interfaces operating in this mode can send and receive
packets simultaneously.
z Half-duplex mode (half). Interfaces operating in this mode can either send or
receive packets at a given time.
z Auto-negotiation mode (auto). Interfaces operating in this mode determine their
duplex mode through auto-negotiation.
If you configure the transmission rate for an Ethernet interface with the speed auto
command, the transmission rate is determined through auto-negotiation.
Follow these steps to perform basic Ethernet interface configurations:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet interface
view
interface interface-type
interface-number
—
Set the descriptive
information for the
Ethernet interface
description text
Optional
By default, the descriptive
information is “interface
index + Interface”.
Set the duplex mode duplex { auto | full | half }
Optional
auto by default.
Set the transmission rate
speed { 10 | 100 | 1000 |
auto }
Optional
auto by default.
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H3C S9500 Series Routing Switches Chapter 1 Ethernet Interface Configuration
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To do... Use the command... Remarks
Shut down the Ethernet
interface
Shutdown
Optional
By default, an Ethernet
interface is in up state.
Use the undo shutdown
command to bring up the
interface.
Note:
z The speed 1000 command is only available for GigabitEthernet interfaces.
z GigabitEthernet electric interfaces cannot operate in half-duplex mode when the
transmission rate is set to 1000 Mbps.
z Ethernet optical interfaces cannot operate in half-duplex mode.
z You cannot set the transmission rate of a ten-GigabitEthernet or 100-Mbps Ethernet
optical interface. For a 1000-Mbps Ethernet optical interface, you can only set the
transmission rate to 1000 Mbps or auto negotiation.
z When an O/E converter is used for an interface, set the duplex mode of the interface
to auto for the interface to operate normally.
1.1.4 Configuring Flow Control on an Ethernet Interface
When flow control is enabled on both sides, if traffic congestion occurs at the ingress
interface, it will send a Pause frame notifying the egress interface to temporarily
suspend the sending of packets. The egress interface is expected to stop sending any
new packets when it receives the Pause frame. In this way, flow controls helps to avoid
the dropping of packets. Note that only after both the ingress and the egress interfaces
have turned on their flow control will this be possible.
Follow these steps to enable flow control on an Ethernet interface:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet interface
view
interface interface-type
interface-number
—
Enable flow control
flow-control
Required
Turned off by default
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H3C S9500 Series Routing Switches Chapter 1 Ethernet Interface Configuration
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1.1.5 Configuring Physical State Change Suppression on an Ethernet
Interface
An Ethernet interface operates in one of the two physical link states: up or down. During
the suppression time, physical-link-state changes will not be propagated to the system.
Only after the suppression time has elapsed will the system be notified of the
physical-link-state changes by the physical layer. This functionality reduces the extra
overhead occurred due to frequent physical-link-state changes within a short period of
time.
Follow these steps to configure the up/down suppression time on an Ethernet Interface:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet interface
view
interface interface-type
interface-number
—
Configure the up/down
suppression time of
physical-link-state
changes
link-delay delay-time
Required
Defaults to 1 second.
1.1.6 Configuring Loopback Testing on an Ethernet Interface
You can enable loopback testing to check whether the Ethernet interface functions
properly. Note that no data packets can be forwarded during the testing. Loopback
testing falls into the following two categories:
z Internal loopback testing: a loopback testing carried out within the device, if data
packets sent from an Ethernet interface can be received by the same interface, the
internal loopback testing is successful indicating that the interface is functioning
properly.
z External loopback testing: a loopback plug needs to be plugged into an Ethernet
interface, if data packets sent from the interface is received by the same interface
through the loopback plug, the external loopback testing is successful indicating
that the interface is functioning properly.
Follow these steps to enable Ethernet interface loopback testing:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet interface
view
interface interface-type
interface-number
—
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H3C S9500 Series Routing Switches Chapter 1 Ethernet Interface Configuration
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To do... Use the command... Remarks
Enable loopback testing
loopback { external |
internal }
Optional
Disabled by default.
Note:
z Currently, the S9500 series routing switches do not support the external loopback
testing.
z Internal loopback testing can only be enabled on interfaces in down state. That is, it
is unavailable to interfaces that are shut down manually.
z The speed, duplex, mdi, and shutdown commands are not applicable during a
loopback testing.
z With the loopback testing enabled, the Ethernet interface works in the full duplex
mode at highest speed. With the loopback testing enabled, the original
configurations will be restored.
1.1.7 Configuring a Manual Port Group
To make the configuration task easier for users, certain devices allow users to configure
on a single port as well as on multiple ports in a port group. In manual port group view,
the user only needs to input the configuration command once and that configuration will
apply to all ports in the port group. This effectively reduces redundant configurations.
Follow these steps to enter manual port group view:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter manual port group
view
port-group manual
port-group-name
—
Follow these steps to configure a manual port group:
To do... Use the command... Remarks
Enter system view
system-view
—
Create a manual port
group and enter manual
port group view
port-group manual
port-group-name
Required
Add Ethernet interfaces to
the manual port group
group-member
interface-list
Required
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Note:
For information about aggregation port groups, refer to the Link Aggregation
Configuration in the Access Volume.
1.1.8 Configuring Traffic Suppression for an Ethernet Interface
You can suppress the broadcast and multicast traffic passing through an Ethernet
interface.
When the traffic over the interface exceeds the pre-set threshold, the system will
discard the extra packets to ensure that the network functions properly.
Follow these steps to configure the traffic suppression function for an Ethernet
interface:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter
Ethernet
interface
view
interface interface-type
interface-number
Enter
Ethernet
interface
view or
port
group
view
Enter port
group view
port-group { manual
port-group-name |
aggregation agg-id }
Use either command.
If configured in Ethernet
interface view, this feature
takes effect on the current
interface only; if configured in
port group view, this feature
takes effect on all the
interfaces in the port group.
Configure broadcast
suppression
broadcast-suppressio
n { ratio | pps max-pps }
Optional
By default, all broadcast traffic
is allowed to pass through an
interface, that is, broadcast
traffic is not suppressed.
Configure multicast
suppression
multicast-suppression
{ ratio | pps max-pps }
Optional
Multicast suppression does not
differentiate unknown
multicasts from known
multicasts.
By default, all multicast traffic
is allowed to pass through an
Ethernet interface, that is,
multicast traffic is not
suppressed.
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Note:
z You cannot enable broadcast suppression and multicast suppression on a board at
the same time. If you have enabled broadcast suppression on some ports of a board,
you cannot enable multicast suppression on the other ports, and vice versa.
z Before enabling multicast suppression on a port, you must disable broadcast
suppression on all the other ports on the same board. Similarly, before enabling
broadcast suppression on a port, you must disable multicast suppression on all the
other ports on the same board.
z The multicast suppression function suppresses broadcast traffic in addition to
multicast traffic but the broadcast suppression does not suppress multicast traffic.
1.1.9 Setting the Interval for Collecting Ethernet Interface Statistics
Complete the following configuration tasks to configure the time interval for collecting
interface statistics. Use the display interface command to display the interface
statistics within the current interval.
Follow these steps to configure the interval for collecting Ethernet interface statistics:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter Ethernet interface
view
interface interface-type
interface-number
—
Configure the time interval
for collecting interface
statistics
flow-interval interval
Required
Defaults to 300 seconds.
1.1.10 Setting the Maximum Jumbo Frame Size for Ethernet Interfaces
Usually, an Ethernet interface discards received jumbo frames (frames larger than the
standard Ethernet frame size) directly without processing them. To handle jumbo
frames under a certain size, which may be received during large-throughput data
switching like file transfer, you can set a jumbo Ethernet frame size limit on the switch.
Follow these steps to set the maximum jumbo frame size for the Ethernet interfaces on
a board:
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H3C S9500 Series Routing Switches Chapter 1 Ethernet Interface Configuration
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To do... Use the command... Remarks
Enter system view
system-view
—
Set the maximum size of the
jumbo frames allowed to pass
through an Ethernet interface
on a board
jumboframe enable
[ jumboframe-value ] slot
slot-number
Optional
1552 bytes by
default.
Note:
z The allowed maximum frame size is 10236 bytes on non-line-speed XP4 boards
and LSB1GV48 boards and 10240 bytes on other GE and 10GE boards.
z You can configure the jumbo frame size in the range 1552 to 10240 in bytes.
However, if the size is set in the range 1553 to 9022, the value 9022 takes effect; if
the size is set in the range 9023 to 9192, the value 9192 takes effect; if the size is set
in the range 9193 to 10240, 10240 takes effect.
1.1.11 Configuring the MDI Mode of an Ethernet Interface
You can connect an Ethernet interface with a crossover or straight-through cable,
depending on its medium dependent interface (MDI) mode. The MDI mode can be one
of the following:
z Across mode, where the Ethernet interface can be connected only to a crossover
cable.
z Normal mode, where the Ethernet interface can be connected only to a
straight-through cable.
z Auto mode, where the Ethernet interface can be connected to either a
straight-through cable or a crossover cable.
Use the auto mode in normal cases. In case the interface in auto mode cannot
recognize the type of the connected cable, set its MDI mode to across or normal.
Follow these steps to configure the MDI mode of an Ethernet Interface:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet interface
view
interface interface-type
interface-number
—
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To do... Use the command... Remarks
Configure the MDI mode
of the Ethernet interface
mdi { across | auto |
normal }
Optional
The default is auto, that is,
the system decides the
role of the pins (to send
packets or receive
packets) through auto
negotiation.
Caution:
You can configure the cable type of 10/100 Mbps and 10/100/1000 Mbps electrical
interfaces only. The cable type of optical Ethernet interfaces is not configurable.
1.1.12 Configuring the Source MAC Address for an Interface
Normally, when a packet is forwarded by an S9500 switch on Layer 3, its source MAC
address is that of the VLAN interface which the outbound interface corresponds to.
However, It is required in some cases that the source MAC addresses of packets
forwarded through different interfaces be different for forwarding policies to take effect
on the peer devices.
By configuring the source MAC address for an interface, you can set the least octet of
the source MAC addresses of the packets forwarded through the interface for
forwarding policies to take effect on the peer devices.
Follow these steps to configure the source MAC address for an interface:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet interface
view
interface interface-type
interface-number
—
Configure the source
MAC address
source-mac-tail last-byte
Required
By default, the source
MAC address of an
interface is that of the
corresponding VLAN
interface.
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Caution:
After you configure the source MAC address for an interface, packets forwarded on
Layer 3 through the interface use the MAC address of the corresponding VLAN
interface as their source MAC addresses, with the least octet being replaced with value
specified by the source-mac-tail command.
Note:
Currently, this command is not supported on the following boards: LSB1GV48DA,
LSB1GV48DB, LSB2GV48DA, LSB1GP48DB, LSB1XP4B, LSB1XP4CA, and
LSB1XP4DB.
1.2 Displaying and Maintaining Ethernet Interfaces
To do... Use the command... Remarks
Display the information of
Ethernet interfaces
display interface
[ interface-type
[ interface-number ] ]
Available in any view
Display the brief
information of Ethernet
interfaces
display brief interface
[ interface-type
[ interface-number ] ] [ |
{ begin | include |
exclude} text ]
Available in any view
Display the ports that are
of a specified type
display port { hybrid |
trunk }
Available in any view
Display the information
about a manual port group
or all the port groups
display port-group
manual [ all | name
port-group-name ]
Available in any view
Display the statistics on
the packets passing
through interfaces of
specific type
display counters
{ inbound | outbound }
interface [ interface-type ]
Available in any view
Display the rate statistics
on the packets passing
through the interfaces
within the last sample time
interval
display counters rate
{ inbound | outbound }
interface [ interface-type ]
Available in any view
Display the alarm
information of pluggable
optical modules
display transceiver
alarm interface
[ interface-type
interface-number ]
Available in any view
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To do... Use the command... Remarks
Display the values of the
diagnostic parameters for
pluggable optical modules
display transceiver
diagnosis interface
[ interface-type
interface-number ]
Available in any view
Display the major
parameters of pluggable
optical modules
display transceiver
interface [ interface-type
interface-number ]
Available in any view
Display the radio
frequency identification
(RFID) information of
pluggable optical modules
display transceiver
manuinfo interface
[ interface-type
interface-number ]
Available in any view
Clear the statistics for
Ethernet interfaces
reset counters interface
[ interface-type
[ interface-number ] ]
Available in user view
Note:
The display counters and display counters rate commands only display the
statistics about the packets passing through RPR logical ports.
/