32 lines
969 B
Bash
32 lines
969 B
Bash
 
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#!/bin/sh
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# Drives traffic from a Site-B client to the anycast address and shows which
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# A-node (a1/a2/a3) answered each request, demonstrating ECMP distribution.
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# Usage: scripts/traffic-test.sh [client] [request-count]
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set -e
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cd "$(dirname "$0")/.."
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CLIENT="${1:-c1}"
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COUNT="${2:-20}"
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DST="10.200.200.1"
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echo "==== $CLIENT: ping $DST ===="
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docker compose exec -T "$CLIENT" ping -c 4 "$DST"
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echo
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echo "==== $CLIENT: traceroute $DST ===="
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docker compose exec -T "$CLIENT" traceroute -n -m 5 "$DST" 2>&1 || true
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echo
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echo "==== $CLIENT: $COUNT requests to http://$DST, varying source port (ECMP hash input) ===="
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RESULTS=$(docker compose exec -T "$CLIENT" sh -c '
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for i in $(seq 1 '"$COUNT"'); do
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port=$((30000 + i))
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node=$(curl -s --local-port "$port" --max-time 3 "http://'"$DST"'/" || echo "no-answer")
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echo "req $i (src-port $port) -> $node"
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done
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')
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echo "$RESULTS"
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echo
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echo "Distribution:"
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echo "$RESULTS" | awk '{print $NF}' | sort | uniq -c
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