Dell PowerConnect PC7048R Anweisungen zum Stapeln - Seite 33
Blättern Sie online oder laden Sie pdf Anweisungen zum Stapeln für Schalter Dell PowerConnect PC7048R herunter. Dell PowerConnect PC7048R 37 Seiten. Stacking gigabit ethernet switches
Auch für Dell PowerConnect PC7048R: Technisches Weißbuch (34 seiten)
Seite drucken
Stacking Dell PowerConnect 7000 Series Switches
NSF Re-convergence Timing
As mentioned in the previous section, NSF protects against failures by check-pointing information to a
standby unit. In an NSF-protected stack, the worst-case scenario is when the master unit fails. The
following statistics show representative re-convergence times of an NSF-enabled standby switch as
measured from the detection of failure. With NSF enabled, data plane forwarding continues non-stop
on the non-failed switches while the standby unit converges the control plane protocols using the
check-pointed information. The re-convergence times given below include re-establishing
communication with the upper layer protocol peers, synchronization of shared information with the
peer, and re-establishment of any data plane forwarding paths around the failed master unit.
Medium Configuration
8 switches stacked
100 VLANs, all ports are members of all VLANs
4/4 static/dynamic lags with 8 members each
3 MSTP instance with VLANs
30 ACLs applied on 30 interfaces
10 Diffserv service interfaces with policies on 10 interfaces
6 VLAN routing interfaces
128 L2 Multicast group entries
512 ARP entries
128 Unicast routes
Parameter
L2 loss duration (non-failed or rerouted stack member)
L2 loss duration (failed/rerouted stack member)
L3 loss duration (failed/rerouted stack member)
IPMC loss duration (failed/rerouted stack member)
L2 convergence time
L3 convergence time
IPMC convergence time
Total convergence time
Timing
0 msec
10 msec
12 msec
12 msec
25.70 sec
25.410 sec
25.420 sec
25.420 sec
Page 31