Ethernet Interface Naming Conventions; Restrictions And Guidelines For 25-Ge Interfaces - H3C S6850 Series Configuration Manual

By default, the management Ethernet interface is up.

Ethernet interface naming conventions

The Ethernet interfaces are named in the format of interface type A/B/C. The letters that follow the
interface type represent the following elements:
•
A—IRF member ID. If the switch is not in an IRF fabric, A is 1 by default.
•
B—Card slot number. 0 indicates the interface is a fixed interface of the switch.
•
C—Port index.
For example, a 10-GE breakout interface split from a 40-GE interface is named in the format of
interface type A/B/C:D. A/B/C is the interface number of the 40-GE interface. D is the number of
the 10-GE interface, which is in the range of 1 to 4. For information about splitting a 40-GE interface,
see "Splitting a 40-GE interface and combining 10-GE breakout

Restrictions and guidelines for 25-GE interfaces

25-GE interfaces can operate at 25 Gbps, 10 Gbps, or 1 Gbps. However, 25-GE interfaces on
LSWM124TG2H interface modules do not support speed or duplex mode autonegotiation. You must
manually execute the speed and duplex commands to ensure the interfaces at both ends have
the same speed and duplex mode settings. For an interface to come up, make sure the speed
configured for the interface is the same as the speed of the transceiver module or cable. A 25-GE
breakout interface can operate only at 25 Gbps.
25-GE interfaces on an S6850-56HF switch are grouped as follows:
•
For interfaces 1 through 24 and 33 through 56, four continuous interfaces starting from 1 or 33
are organized into one group.
•
When you use the using twenty-fivegige command to split a 100-GE interface into four
25-GE breakout interfaces, the four breakout interfaces are organized into one group.
For 25-GE interfaces on an LSWM124TG2H interface module, four continuous interfaces starting
from 1 are organized into one group.
Interfaces in the same group must have the same speed settings. When you modify the speed of an
interface in a group, the modification takes effect on all interfaces in the group. When you use the
default command to restore the default settings for the interface, the speed will be restored to the
default for the interface and the other interfaces in the group.
For 25-GE interfaces on an LSWM124TG2H interface module, you must use the port
media-type { copper | fiber } command to set the media type. Set the media type to fiber
for an interface that uses a transceiver module or fiber cable. Set the media type to copper for an
interface that uses a copper cable. The media type of interfaces in the same group is the same.
When you set the media type for any interface in a group, the setting is synchronized to the other
interfaces in the group.
When a local 25-GE interface on an S6850-56HF or S9850-32H switch is connected to a peer 25-GE
interface on a different device, the interface configuration requirements are as shown in
interfaces to operate properly, you must enable link compensation (also known as training or CL72)
on both ends when the interfaces are connected by using a copper cable. This requirement is not
otherwise described in
In Table 1, the 25-GE interfaces are supposed to be connected when they use the default settings.
Table 1 describes only 25-GE interfaces operating at 25 Gbps. When a 25-GE interface operates at
10 Gbps or 1 Gbps, you only need to configure the same speed and duplex mode (do not configure
autonegotiation settings) for both ends and set the media type as needed. You do not need to
configure FEC or link compensation.
Table 1.
2
interfaces."
Table 1. For