Deployment Guide

Each overlay ARP entry requires a routing next-hop in the hardware to bind a destination tenant VM IP address to the corresponding
tenant VM MAC address and VNI. Each virtual-network interface assigned to an IP subnet requires a routing interface in the hardware.
OS10 supports preset profiles to re-allocate the number of resources reserved for overlay ARP entries. The number of entries reserved for
each preset mode differs according to OS10 switch.
Table 3. Routing next-hops reserved on OS10 switches
OS10 Switch Overlay next-
hop entries
Underlay next-
hop entries
Overlay L3 RIF
entries
Underlay L3 RIF entries
S41xx-ON series:
default-overlay-routing
disable-overlay-routing
balanced-overlay-routing
scaled-overlay-routing
—
4096
0
16384
24576
—
28672
32768
16384
8192
—
2048
0
6144
10240
—
10240
12288
6144
2048
S4048T-ON and S6010-ON:
default-overlay-routing
disable-overlay-routing
balanced-overlay-routing
scaled-overlay-routing
—
8192
0
24576
40960
—
4096
49152
24576
8192
—
2048
49152
24576
8192
—
2048
0
6144
10240
S52xx-ON series:
default-overlay-routing
disable-overlay-routing
balanced-overlay-routing
scaled-overlay-routing
—
8192
0
32768
53248
—
57344
65536
32768
12288
—
2048
0
8192
12288
—
14336
16384
8192
4096
S4248-ON:
default-overlay-routing
—
20480
—
110592
—
4096
—
28672
NOTE: The S4248-ON switch supports only one default profile to reserve resources for overlay ARP entries.
To activate the profile after you configure an overlay routing profile, save the configuration and reload the switch.
Configure an overlay routing profile
• Enable an overlay routing profile in Configuration mode or disable the configured profile and return to the default.
OS10# hardware overlay-routing-profile {disable-overlay-routing | balanced-overlay-routing
|
scaled-overlay-routing}
Display overlay routing profiles
• View the hardware resources available for overlay routing in different profiles; for example, in the S5200-ON series:
OS10# show hardware overlay-routing-profile mode all
Mode Overlay Next-hop Underlay Next-hop Overlay L3 RIF Underlay L3
RIF
Entries Entries Entries Entries
default-overlay-routing 8192 57344 2048
14336
disable-overlay-routing 0 65536 0
16384
balanced-overlay-routing 32768 32768 8192
8192
scaled-overlay-routing 53248 12288 12288 4096
14
VXLAN