HP 4800G Series Configuration Manual page 1946

Figure 1-8 IRF
Master
(member-id＝1)
IRF link
Slave1
(member-id＝2)
IRF link
Slave2
(member-id＝3)
IRF link
Slave3
(member-id＝4)
Interface name
For a device operating independently (that is, the device does not belong to any IRF), its interface name
is in the following format: member ID/slot number/interface serial number, where
By default, member ID is 1.
After a device leaves an IRF, it continues using the member ID when it was in the IRF as its device
ID.
Subslot number is the number of the slot in which the LPU resides. For a box-type device, LPUs
are fixed on the device, so the slot number is a fixed value. On the Switch 4800G series, the subslot
on the front panel is numbered 0, and subslots of the two expansion slots on the rear panel are
numbered 1 and 2 from left to right.
Interface serial number is dependent on the number of interfaces supported by the device. View
the silkscreen on the interface card for the number of supported interfaces.
For example, GigabitEthernet 1/0/1 is an interface on the independently operating device Sysname. To
set the link type of GigabitEthernet 1/0/1 to trunk, perform the following steps:
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] port link-type trunk
For an IRF member, the interface name also adopts the previously introduced format: member ID/slot
number/interface serial number, where
The member ID identifies the IRF member on which the interface resides
Meaning and value of the subslot number and the interface serial number are the same as those on
an independently operating device.
For example, GigabitEthernet 1/0/1 is an interface on IRF member slave 3 (member ID is 3). To set the
link type of GigabitEthernet 1/0/1 to trunk, perform the following steps:
<Master> system-view
[Master] interface gigabitethernet 3/0/1
[Master-GigabitEthernet3/0/1] port link-type trunk
Virtual logical device
After the IRF is
established
1-9
Main
slot 1
Slave 1
slot 2
Slave 2
slot 3
Slave 3
slot 4