Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 553)

Multi-Service IronWare Switching Configuration Guide 523
53-1003036-02
Manual switch
15
Figure 137 shows a manual switch on ERN 3, which is a non-RPL node. In order to clear the MS
condition, the operator must enter the manual switch command from ERN 3. The sequence of
messages and actions is as shown in
Figure 138 .
FIGURE 138 MS on Non-RPL node
After the manual switch is triggered, the operator can clear it with the no command and MS
recovery will begin.
Figure 139 shows the sequence of events during the MS recovery process.
FIGURE 139 MS recovery process
Non-RPL node with error (ERN 3) RPL owner (ERN 1) and RPL node (ERN2) Other Non-RPL node (ERN 4)
From the Idle state, ERN3:
1
Blocks the MS port
2 Sends the RAPS (MS)
3 Flushes the FDB
4 Enters the manual switch (MS)
state
From the Idle state, ERN 4:
1
Forward R-APS (MS)
2 Flush the FDB
3 Enter the MS state
From the Idle state, ERN 1:
1
Forwards R-APS (MS)
2 Unblocks the RPL
3 Flushes the FDB
4 Enters the MS state
Non-RPL node with error (ERN 3) RPL owner (ERN 1) RPL node (ERN2) with dual-end
blocking enabled Non-RPL node (ERN 4)
From the MS state, ERN 3:
1
Stops sending R-APS (MS)
2 Sends R-APS (NR)
3 Continues to block the port
4 Enters the Pending state
From the MS state, ERN 1:
1
Receives the R-APS (NR)
2 Starts the WTB timer
3 Forwards the R-APS (NR)
4 Enters the Pending state
5 After the WTB timer
expires, blocks the RPL
6 Flushes the FDB
7 Sends R-APS (NR, RB)
8 Enters the Idle state
From the MS state, ERN 2:
1
Receives the R-APS (NR)
2 Forwards the R-APS (NR)
3 Enters the Pending state
From the MS state, ERN 2:
1
Receives the R-APS (NR)
2 Forwards the R-APS (NR)
3 Enters the Pending state
From the Pending state, ERN 3:
5. Receives the R-APS (NR, RB)
and unblocks the blocking port
6. Forwards the R-APS (NR, RB)
7. Flushes the FDB
8. Enters the Idle state From the Pending state, ERN 2:
4. Blocks the RPL
5. Forwards the R-APS (NR, RB)
6. Flushes the FDB
7. Enters the Idle state From the Pending state, ERN 4:
4. Forwards the R-APS (NR, RB)
5. Flushes the FDB
6. Enters the Idle state