Juniper and Cisco Commands

Here's a comparison of some commonly used Juniper and Cisco switch commands for basic configuration and management:

1. Entering Configuration Mode

Juniper:
```
configure
```
Cisco:
```
configure terminal
```

2. Setting Hostname

Juniper:
```
sql
set system host-name <hostname>
```
Cisco:
```
php
hostname <hostname>
```

3. Saving Configuration

Juniper:
```
sql
commit
```

Cisco:

arduino
write memory

arduino
copy running-config startup-config

4. Displaying Interface Information

Juniper:
```
sql
show interfaces
```
Cisco:
```
kotlin
show ip interface brief
```

5. Assigning IP Address to Interface

Juniper:

csharp
set interfaces <interface> unit 0 family inet address <ip-address>

Cisco:

csharp
interface <interface>
ip address <ip-address> <subnet-mask>

6. Configuring VLAN

Juniper:

python
set vlans <vlan-name> vlan-id <vlan-id>

Cisco:

php
vlan <vlan-id>
name <vlan-name>

7. Showing Running Configuration

Juniper:
```
sql
show configuration
```
Cisco:
```
arduino
show running-config
```

8. Checking VLAN Information

Juniper:
```
sql
show vlans
```
Cisco:
```
sql
show vlan brief
```

9. Setting Interface Description

Juniper:

csharp
set interfaces <interface> description <description>

Cisco:

csharp
interface <interface>
description <description>

10. Rebooting the Switch

Juniper:
```
perl
request system reboot
```
Cisco:
```
reload
```

Both Juniper and Cisco devices have their own syntax and structure. Juniper uses the JUNOS operating system with a hierarchy-based command structure, while Cisco uses IOS with a more linear configuration approach.

please give me another commands

Here are more Juniper and Cisco switch commands for comparison:

11. Configuring a Trunk Port

Juniper:

csharp
set interfaces <interface> unit 0 family ethernet-switching port-mode trunk
set interfaces <interface> unit 0 family ethernet-switching vlan members <vlan-id>

Cisco:

csharp
interface <interface>
switchport mode trunk
switchport trunk allowed vlan <vlan-id>

12. Configuring an Access Port

Juniper:

csharp
set interfaces <interface> unit 0 family ethernet-switching port-mode access
set interfaces <interface> unit 0 family ethernet-switching vlan members <vlan-id>

Cisco:

csharp
interface <interface>
switchport mode access
switchport access vlan <vlan-id>

13. Enabling STP (Spanning Tree Protocol)

Juniper:

csharp
set protocols stp interface <interface>

Cisco:

php
spanning-tree mode <type>
spanning-tree vlan <vlan-id> root primary

14. Viewing ARP Table

Juniper:
```
sql
show arp
```
Cisco:
```
sql
show ip arp
```

15. Enabling SSH

Juniper:
```
sql
set system services ssh
```
Cisco:
```
ip ssh version 2
```

16. Configuring DHCP Relay

Juniper:

csharp
set forwarding-options helpers bootp relay-agent interface <interface>

Cisco:

css
ip helper-address <DHCP-server-IP>

17. Setting Static Route

Juniper:

vbnet
set routing-options static route <destination> next-hop <next-hop-IP>

Cisco:

php
ip route <destination> <subnet-mask> <next-hop-IP>

18. Configuring Link Aggregation (LACP)

Juniper:

python
set interfaces ae0 aggregated-ether-options lacp active
set interfaces ae0 unit 0 family ethernet-switching vlan members <vlan-id>

Cisco:

kotlin
interface port-channel 1
switchport mode trunk
channel-group 1 mode active

19. Enabling LLDP (Link Layer Discovery Protocol)

Juniper:

csharp
set protocols lldp interface <interface>

Cisco:
```
arduino
lldp run
```

20. Viewing Logs

Juniper:
```
bash
show log messages
```
Cisco:
```
sql
show logging
```

These commands provide more control over advanced configurations like trunking, STP, link aggregation, and protocols like LLDP and DHCP relay.

configure dhcp protocol and svi

To configure DHCP protocol and SVI (Switched Virtual Interface) on both Juniper and Cisco switches, follow the steps below:

On Juniper Switch:

1. Configuring DHCP Server:

To configure the switch to act as a DHCP server:

csharp
set system services dhcp-local-server group <group-name> interface <interface-name>
set access address-assignment pool <pool-name> family inet network <network-address>/<subnet-mask>
set access address-assignment pool <pool-name> family inet range <range-name> low <low-ip>
set access address-assignment pool <pool-name> family inet range <range-name> high <high-ip>
set access address-assignment pool <pool-name> family inet dhcp-attributes router <gateway-ip>

Example:

sql
set system services dhcp-local-server group dhcp-group interface vlan.10
set access address-assignment pool dhcp-pool family inet network 192.168.10.0/24
set access address-assignment pool dhcp-pool family inet range range1 low 192.168.10.10
set access address-assignment pool dhcp-pool family inet range range1 high 192.168.10.100
set access address-assignment pool dhcp-pool family inet dhcp-attributes router 192.168.10.1

2. Configuring SVI:

To create a VLAN interface (SVI) and assign an IP address:

php
set interfaces vlan unit <vlan-id> family inet address <ip-address>/<subnet-mask>
set vlans <vlan-name> vlan-id <vlan-id> l3-interface vlan.<vlan-id>

Example:

kotlin
set interfaces vlan unit 10 family inet address 192.168.10.1/24
set vlans sales vlan-id 10 l3-interface vlan.10

On Cisco Switch:

1. Configuring DHCP Server:

To configure a Cisco switch to act as a DHCP server:

php
ip dhcp pool <pool-name>
network <network-address> <subnet-mask>
default-router <gateway-ip>
dns-server <dns-server-ip>

Example:

arduino
ip dhcp pool Sales
network 192.168.10.0 255.255.255.0
default-router 192.168.10.1
dns-server 8.8.8.8

2. Configuring SVI:

To configure an SVI for inter-VLAN routing:

csharp
interface vlan <vlan-id>
ip address <ip-address> <subnet-mask>
no shutdown

Example:

kotlin
interface vlan 10
ip address 192.168.10.1 255.255.255.0
no shutdown

DHCP Relay (If using external DHCP server):

Juniper:

csharp
set forwarding-options dhcp-relay server-group <group-name> <server-ip>
set forwarding-options dhcp-relay group <group-name> interface <interface-name>

Cisco:

csharp
interface vlan <vlan-id>
ip helper-address <dhcp-server-ip>

These configurations will enable a DHCP server on both Juniper and Cisco switches and allow inter-VLAN routing using SVI.

DOS AND DDOS ATTACK

A Dos (Denial-Of-Service) Attack and A DDOS (Distributed Denial-Of-Service) Attack Are Both Attempts to Make a Computer System or Network Resource Unavailable to Legitimate Users. However, They Differ in How They Achieve This: Dos Attack: Imagine A Single Person Throwing Rocks at A Castle Gate. A This Person Represents the Attacker, And the Rocks Represent the Malicious Traffic. The Castle Gate Represents the Target System or Network Resource. The Attacker Keeps Throwing Rocks, Trying to Overwhelm the Gate's Defenses and Gain Entry. Dos Attacks Are Typically Launched from A Single System. They Can Be Effective Against Small Systems or Networks, But Larger Systems Can Often Withstand Them. DDos Attack: Imagine An Army Throwing Rocks at A Castle Gate. This Army Represents the Attacker, And the Rocks Represent the Malicious Traffic. The Castle Gate Represents the Target System or Network Resource. The Attackers Coordinate Their Attack, Throwing Rocks from Multiple Directions at Once. ...

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