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add scripts for Blatt01 and Notes

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This commit is contained in:
Mhrooz
2024-11-03 21:55:01 +01:00
parent c6e384433b
commit b9388e579e
4 changed files with 196 additions and 71 deletions
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53
Blatt01/blatt01.md
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@@ -1,12 +1,5 @@
## router table
| device | eth | ip |
| ------- | ---- | ----------- |
| PC1 | eth1 | 10.5.0.2/24 |
| PC2 | eth1 | 10.5.1.2/24 |
| router1 | eth1 | 10.5.0.1/24 |
| router2 | eth1 | 10.5.1.1/24 |
router -> router
```
@@ -163,7 +156,51 @@ listening on eth1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
### 主要工具：`ip`
## A103
### router table
router1
```
ip route show
10.5.1.0/24 dev eth1 proto kernel scope link src 10.5.1.2
10.5.2.0/24 dev eth2 proto kernel scope link src 10.5.2.1
10.5.3.0/24 via 10.5.2.2 dev eth2
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.7
```
pc1
```
ip route
10.5.1.0/24 dev eth1 proto kernel scope link src 10.5.1.1
10.5.3.0/24 via 10.5.1.2 dev eth1
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.1
```
router2
```
ip route
10.5.1.0/24 via 10.5.2.1 dev eth2
10.5.2.0/24 dev eth2 proto kernel scope link src 10.5.2.2
10.5.3.0/24 dev eth1 proto kernel scope link src 10.5.3.2
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.12
```
pc2
```
root@pc2:~# ip route
10.5.1.0/24 via 10.5.3.2 dev eth1
10.5.3.0/24 dev eth1 proto kernel scope link src 10.5.3.1
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.3
```
## `ip`
**`ip`** 是 IPRoute2 工具集中最常用的命令，能够管理和配置 IP 地址、路由、链路等多种网络参数。与旧版的 `ifconfig` 和 `route` 命令相比，`ip` 更加灵活和强大。

48
Blatt01/scripts/checkip.sh Normal file
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@@ -0,0 +1,48 @@
#!/bin/bash
show_ip(){
local output=$1
ips=()
interfaces=()
# echo $output
while read -r line; do
ip=$(echo "$line" | awk '{print $2}' | cut -d'/' -f1)
interface=$(echo "$line" | awk '{print $5}')
ips+=("$ip")
interfaces+=("$interface")
done <<< "$output"
for i in "${!ips[@]}"; do
echo "${ips[i]} ${interfaces[i]}"
done
}
filename="output/output_$(date +'%m-%d_%H-%M-%S').txt"
echo $(date +'%m-%d_%H-%M-%S')
echo ' ' > $filename
ip_cmd='ip address show | grep 10.5'
for num in {1..4}
do
echo "router$num" >> $filename
echo "router$num"
ip_output=$(ssh router$num $ip_cmd)
ips=()
interfaces=()
result=$(show_ip "$ip_output")
echo $result
echo $result >> $filename
done
for num in {1..3}
do
echo "pc$num" >> $filename
echo "pc$num"
pc_result=$(ssh pc$num $ip_cmd)
result=$(show_ip "$pc_result")
echo $result >> $filename
echo $result
done

103
Blatt01/scripts/testpc.sh Normal file
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@@ -0,0 +1,103 @@
#!/bin/bash
show_ip(){
local output=$1
ips=()
interfaces=()
echo $output
while read -r line; do
ip=$(echo "$line" | awk '{print $2}' | cut -d'/' -f1)
interface=$(echo "$line" | awk '{print $5}')
ips+=("$ip")
interfaces+=("$interface")
done <<< "$output"
for i in "${!ips[@]}"; do
echo "${ips[i]} ${interfaces[i]}"
done
}
ip_cmd='ip address show | grep 10.5'
sender_ip='10.5.1.1/24'
rec_ip='10.5.1.2/24'
rec_ip_no_code='10.5.1.2'
senders=()
recs=()
sender_eths=()
rec_eths=()
losses=()
sender_type="${1:-router}"
receiver_type="${2:-router}"
if [ "$sender_type" = "router" ]; then
sender_ub=4
else
sender_ub=3
fi
if [ "$receiver_type" = "router" ]; then
rec_ub=4
else
rec_ub=3
fi
for sender in $(seq 1 $sender_ub);
do
sender_eth_nums=$(ssh $sender_type$sender "ip address show" | grep -c '^.*eth[0-9]:')
sender_eth_nums=$(($sender_eth_nums-1))
echo "$sender_type$sender has $sender_eth_nums eths"
for sender_eth_num in $(seq 1 $sender_eth_nums);
do
# turn on the device
ssh $sender_type$sender "ip link set dev eth$sender_eth_num up"
ssh $sender_type$sender "ip address add $sender_ip dev eth$sender_eth_num"
# for receiver in {1..4}
for receiver in $(seq 1 $rec_ub);
do
receiver_eth_nums=$(ssh $receiver_type$receiver "ip address show" | grep -c '^.*eth[0-9]:')
receiver_eth_nums=$(($receiver_eth_nums-1))
echo "$receiver_type$receiver has $receiver_eth_nums eths"
if [ "$sender_type" = "$receiver_type" ]; then
if [ "$sender" -eq "$receiver" ]; then
continue
fi
fi
for receiver_eth_num in $(seq 1 $receiver_eth_nums);
do
ssh $receiver_type$receiver "ip link set dev eth$receiver_eth_num up"
ssh $receiver_type$receiver "ip address add $rec_ip dev eth$receiver_eth_num"
echo "sen $sender_type$sender eth$sender_eth_num ip $sender_ip"
echo "rec $receiver_type$receiver eth$receiver_eth_num ip $rec_ip"
ip_output=$(ssh $sender_type$sender $ip_cmd)
result=$(show_ip "$ip_output")
echo $result
# test loss
loss=$(ssh $sender_type$sender "ping -c 5 -W 2 -I eth$sender_eth_num $rec_ip_no_code | awk -F', ' '/packet loss/ {print \$3}' | awk '{print int(\$1)}'")
echo $loss
if [ "$loss" -ne 100 ]; then
senders+=("$sender")
recs+=("$receiver")
sender_eths+=("$sender_eth_num")
rec_eths+=("$receiver_eth_num")
losses+=("$loss")
fi
ssh $receiver_type$receiver "ip address del 10.5.1.2/24 dev eth$receiver_eth_num"
done
done
ssh $sender_type$sender "ip address del 10.5.1.1/24 dev eth$sender_eth_num"
done
done
echo "results"
printf "%-10s %-15s %-12s %-15s %-10s\n" "sender #" "sender eth #" "receiver #" "receiver eth #" "losses #"
for i in "${!senders[@]}"; do
printf "%-10s %-15s %-12s %-15s %-10s\n" "${senders[i]}" "${sender_eths[i]}" "${recs[i]}" "${rec_eths[i]}" "${losses[i]}"
done
# printf "sender #\t sender eth #\t receiver # \t receiver eth # \t losses # \t\n"
# for i in "${!senders[@]}"; do
# printf "%s\t%s\t%s\t%s\t%s\n" "${senders[i]}" "${sender_eths[i]}" "${recs[i]}" "${rec_eths[i]}" "${losses[i]}"
# done