2017-05-15 19:06:19 -05:00
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#!/bin/bash
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#
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# usage:
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# arp_update: Send gratuitous ARP requests to VLAN member neighbors to refresh
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# the neighbors state.
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2017-09-12 16:13:27 -05:00
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VLAN=`sonic-cfggen -d -v 'VLAN.keys() | join(" ") if VLAN'`
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2017-05-15 19:06:19 -05:00
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for vlan in $VLAN; do
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# generate a list of arping commands:
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# arping -q -w 0 -c 1 -i <VLAN interface> <IP 1>;
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# arping -q -w 0 -c 1 -i <VLAN interface> <IP 2>;
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# ...
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arpingcmd="sed -e 's/ / -i /' -e 's/^/arping -q -w 0 -c 1 /' -e 's/$/;/'"
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ipcmd="ip -4 neigh show | grep $vlan | cut -d ' ' -f 1,3 | $arpingcmd"
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eval `eval $ipcmd`
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done
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