The mpls rsvp-te srefresh command enables the summary refresh (Srefresh) function on an interface or globally.
The undo mpls rsvp-te srefresh command disables the Srefresh function.
The Srefresh function is disabled by default.
MPLS view, VLANIF interface view, GE interface view, XGE interface view, MultiGE interface view, 25GE interface view, 40GE interface view, 100GE interface view, Eth-trunk interface view
Each RSVP session needs to generate, send, receive, and process RSVP Path messages and Resv message within the refresh period. With an increasing number of RSVP sessions, a large amount of Refresh messages are generated to maintain the RSVP soft state. When an RSVP message, not an RSVP Refresh message, is dropped, reliability is deteriorated and causes delay. The Srefresh extension can solve the preceding problems. The summary refresh mechanism reduces the required number of Refresh messages and improves reliability of RSVP messages and efficiency of resource usage.
After the Srefresh function is enabled in the MPLS view, the Srefresh function is enabled globally. In addition, the interface enabled with the Srefresh function can refresh the path status and the reservation status by sending Srefresh messages, rather than Path or Resv messages.
# Enable the Srefresh function globally.
<HUAWEI> system-view [HUAWEI] mpls [HUAWEI-mpls] mpls te [HUAWEI-mpls] mpls rsvp-te [HUAWEI-mpls] mpls rsvp-te srefresh
# Enable the Srefresh function on interface VLANIF100.
<HUAWEI> system-view [HUAWEI] interface vlanif 100 [HUAWEI-Vlanif100] mpls [HUAWEI-Vlanif100] mpls te [HUAWEI-Vlanif100] mpls rsvp-te [HUAWEI-Vlanif100] mpls rsvp-te srefresh
<HUAWEI> system-view [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] undo portswitch [HUAWEI-GigabitEthernet0/0/1] mpls [HUAWEI-GigabitEthernet0/0/1] mpls te [HUAWEI-GigabitEthernet0/0/1] mpls rsvp-te [HUAWEI-GigabitEthernet0/0/1] mpls rsvp-te srefresh