sonic-buildimage/dockers/docker-orchagent/arp_update
Taoyu Li c9cc7aea41 [configdb] Migrate minigraph configurations to DB (#942)
Modify minigraph parser output format so it fit DB schema
Modify configuration templates to fit new schema
Systemd services dependencies are modified so database starts before any configuration consumer
2017-09-12 14:13:27 -07:00

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#!/bin/bash
#
# usage:
# arp_update: Send gratuitous ARP requests to VLAN member neighbors to refresh
# the neighbors state.
VLAN=`sonic-cfggen -d -v 'VLAN.keys() | join(" ") if VLAN'`
for vlan in $VLAN; do
# generate a list of arping commands:
# arping -q -w 0 -c 1 -i <VLAN interface> <IP 1>;
# arping -q -w 0 -c 1 -i <VLAN interface> <IP 2>;
# ...
arpingcmd="sed -e 's/ / -i /' -e 's/^/arping -q -w 0 -c 1 /' -e 's/$/;/'"
ipcmd="ip -4 neigh show | grep $vlan | cut -d ' ' -f 1,3 | $arpingcmd"
eval `eval $ipcmd`
done