Auto-trunking New Links or Converting a Linear Stack to a Ring with Stack Interactive-setup
show stack command displays mismatch warning messages. Use the
multi-stack-trunk command to correct the mismatch problem manually.
multi-stack-trunk 1/2/1 to 1/2/4 and 2/2/1 to 2/2/4 command to change the configuration on both units simultaneously. Refer to
Changing a live two-unit stack to a linear-topology trunk for more information.
The following example uses stack interactive-setup to enlarge and add stack-ports
and stack-trunks to convert a linear stack to a ring. The
show stack command displays a three-unit linear stack with a single stacking link between the
active controller and unit 3 and a stacking trunk connection between the active and
standby controller (unit 2).
ICX7750-26Q Router# show stack
T=1d18h10m16.9: alone: standalone, D: dynamic cfg, S: static
ID Type Role Mac Address Pri State Comment
1 S ICX7750-26QXG active cc4e.2438.7280 128 local Ready
2 S ICX7750-48XGF standby 609c.9f7f.9400 128 remote Ready
3 S ICX7750-26QXG member 748e.f8f9.6300 0 remote Ready
standby active
+---+ +---+ +---+
| 2 |2/1==2/1| 1 |2/4--2/1| 3 |
+---+ +---+ +---+
Standby u2 - protocols ready, can failover
Current stack management MAC is cc4e.2438.7280
When the
stack interactive-setup command is entered, option 2 is selected to probe for new units. Probes are sent
out through the ports indicated on the three stack members.
ICX7750-26Q Router# stack interactive-setup You can abort stack interactive-setup at any stage by <ctrl-c> 0: quit 1: change stack unit IDs 2: discover and convert new units (no startup-config flash) to members 3: discover and convert existing/new standalone units to members 2&3 can also find new links and auto-trunk or convert chain(s) to ring. Please type your selection: 2 Sending probes to ports: u1: 1/2/3 1/2/5 to 1/2/6, u2: 2/2/3 to 2/2/6 2/3/1 to 2/3/6, u3: 3/2/2 to 3/2/6 3/3/1 to 3/3/6,
Although no new units are discovered, six additional links are detected between the existing stack units. The new connections between units 1 and 2 enlarge the stacking trunk to three ports. The existing stacking link between units 1 and 3 are, likewise, enlarged to form a three-port stacking trunk.
The existing stack does not show a connection between units 2 and 3; however, the stack interactive-setup probes have discovered three shared stacking links, which are expanded to a stack-trunk on each side to form a ring.
Existing stack: ============================================================
standby active
+---+ +---+ +---+
| 2 |2/1==2/1| 1 |2/4--2/1| 3 |
+---+ +---+ +---+
Stack interactive-setup detects 6 new links (classified to 3 logical links) between existing units.
Logical Link #0: U1--U2: 1 link(s): 1/2/3--2/2/3
It will enlarge (stack-trunk 1/2/1 to 1/2/2) to (stack-trunk 1/2/1 to 1/2/3) and enlarge
(stack-trunk 2/2/1 to 2/2/2) to (stack-trunk 2/2/1 to 2/2/3)
Logical Link #1: U1--U3: 2 link(s): 1/2/5--3/2/2 1/2/6--3/2/3
It will enlarge (stack-port 1/2/4) to (stack-trunk 1/2/4 to 1/2/6) and enlarge
(stack-port 3/2/1) to (stack-trunk 3/2/1 to 3/2/3)
Logical Link #2: U2--U3: 3 link(s): 2/2/4--3/2/4 2/2/5--3/2/5 2/2/6--3/2/6 <-- new links discovered
It will add (stack-trunk 2/2/4 to 2/2/6) and add (stack-trunk 3/2/4 to 3/2/6) on units 2 and 3
The topology will become a ring.
If you enter y to accept the new configuration, the expanded stack-trunks are formed, and the new stack-trunks between units 2 and 3 form a ring.
Do you accept above new link(s)? (enter 'y' or 'n'): y
T=1d18h11m12.0: stack interactive-setup configures stack-trunk 2/2/4 to 2/2/6.
T=1d18h11m12.0: stack interactive-setup configures stack-trunk 3/2/4 to 3/2/6.
Configuration changed. Please do "write memory".
T=1d18h11m13.1: stack interactive-setup configures multi-stack-trunk 1/2/1 to 1/2/3 and 2/2/1 to 2/2/3
stack-trunk 1/2/1 to 1/2/3 replaces stack-trunk 1/2/1 to 1/2/2
stack-trunk 2/2/1 to 2/2/3 replaces stack-trunk 2/2/1 to 2/2/2
T=1d18h11m13.2: stack interactive-setup configures multi-stack-trunk 1/2/4 to 1/2/6 and 3/2/1 to 3/2/3
stack-trunk 1/2/4 to 1/2/6 replaces stack-port 1/2/4
stack-trunk 3/2/1 to 3/2/3 replaces stack-port 3/2/1
Configuration changed. Please do "write memory".
ICX7750-26Q Router#T=1d18h15m7.6: Election, was active, no change, ID=1, pri=128, 3U(1-3), A=u1, nbr#=2 2, reason: u3: , ,
ICX7750-26Q Router# show stack
Config changed due to add/del units. Do write mem if you want to keep it
T=1d18h11m31.0: alone: standalone, D: dynamic cfg, S: static
ID Type Role Mac Address Pri State Comment
1 S ICX7750-26QXG active cc4e.2438.7280 128 local Ready
2 S ICX7750-48XGF standby 609c.9f7f.9400 128 remote Ready
3 S ICX7750-26QXG member 748e.f8f9.6300 0 remote Ready
active standby
+---+ +---+ +---+
=2/1| 1 |2/4==2/1| 3 |2/4==2/4| 2 |2/1=
| +---+ +---+ +---+ |
| | <-- Units 2 and 3 connect
|-------------------------------------| to form ring
Standby u2 - protocols ready, can failover
Current stack management MAC is cc4e.2438.7280
After you have confirmed the configuration, be sure to save the configuration with
the
write memory command.
ICX7750-26Q Router# configure terminal ICX7750-26Q Router(config)# write memory