HP 7500 series Configuration Manual page 7

Figure 2 Two-chassis IRF fabric implementation schematic diagram
Device A
(MemberID=1)
Active MPU
Standby MPU
IRF-port 2
XGE1/3/0/1
Service
Physical IRF
interface
port
In this figure, Device A and Device B form a two-member IRF fabric that has four MPUs (one active and
three standbys) and two times the number of interface cards that a single device provides. The IRF fabric
manages the physical and software resources of Device A and Device B in a centralized manner.
You can scale this two-chassis IRF fabric to a four-chassis IRF fabric for higher port density and
availability, as shown in
IRF link
An IRF fabric
is formed.
IRF
Master
(MemberID=1)
IRF's Active MPU
IRF's standby MPU
Subordinate
(MemberID=2)
IRF's standby MPU
IRF's standby MPU
Figure 3.
Device B
(MemberID=2)
Active MPU
Standby MPU
IRF-port 1
XGE2/3/0/1
Service
Physical IRF
interface
port
3