Connectivity Guide

Deep Buffer mode
NOTE: This feature is supported only on the S4200-ON series.
OS10 provides the flexibility to configure the buffer mode based on your system requirements. The system memory contains a
list of packet buffers and per packet information (PPI), which is used to enable statistics tagging, ingress shaping, PFC, and
output logical interface stamping per multicast traffic.
You can configure Deep Buffer mode to manage switch buffer availability. The following lists the total buffer availability in
different modes:
Table 67. Buffer availability in different modes
Platform Without deep buffer With deep buffer
S4200–ON series 4.63 GB 6.24 GB
Deep Buffer mode takes effect only after saving it in the startup configuration and reloading the switch.
NOTE: Disabling the Deep Buffer mode configuration during run-time is not supported.
Restrictions
Deep Buffer mode and network QoS configurations cannot coexist. Enable Deep Buffer mode only when the network QoS
configurations; for example LLFC and PFC are disabled. To configure Deep Buffer mode, disable all network QoS related
configurations.
Configure Deep Buffer mode
You must disable all the network QoS configurations; for example, PFC and LLFC, before configuring the Deep Buffer mode.
Deep Buffer mode is disabled by default.
1. Enable Deep Buffer mode in CONFIGURATION mode.
OS10# configure terminal
OS10(config)# hardware deep-buffer-mode
NOTE:
To disable Deep Buffer mode, use the no form of the command. Disabling Deep Buffer mode takes effect only
after saving it in the startup configuration and reloading the switch.
After you configure Deep Buffer mode, the system displays a warning stating that the configuration takes effect only after
saving it in the startup configuration and reloading the switch.
% Warning: Deep buffer mode configuration will be applied only after a save and
reload.
2. Save Deep Buffer mode in the startup configuration in CONFIGURATION mode.
OS10(config)# do write memory
3. Reload the switch in CONFIGURATION mode.
OS10(config)# do reload
Proceed to reboot the system? [confirm yes/no]:yes
To view Deep Buffer mode status, use the show hardware deep-buffer-mode command. The show command output
displays the status of Deep Buffer mode in the current boot and the next boot.
The following is Deep Buffer mode status before enabling it, the default setting:
OS10# show hardware deep-buffer-mode
Deep Buffer Mode Configuration Status
-------------------------------------------
Current-boot Settings : Disabled
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