Advanced Configurations for Both Cisco Catalyst 3650 and 9200

Advanced Configurations for Both Cisco Catalyst 3650 and 9200

The Cisco Catalyst 3650 and 9200 series switches are designed to meet the demands of advanced network environments, offering extensive configuration options to enhance performance, security, and manageability. This guide explores some of the advanced configurations that can be applied to both models, providing detailed insights into how to maximize the potential of these powerful devices.

1. Quality of Service (QoS) Configuration

Purpose: Prioritize network traffic to ensure that critical applications receive the bandwidth they need to perform optimally.

Configure QoS on Catalyst 3650:
bash
Copy code
configure terminal

class-map match-any VOIP

match protocol sip

policy-map POLICY-VOIP

class VOIP

set dscp ef

interface GigabitEthernet1/0/1

service-policy output POLICY-VOIP

end


Configure QoS on Catalyst 9200: Similar steps as 3650, but with enhanced capabilities for handling more data streams:
bash
Copy code
configure terminal

class-map match-any VIDEO

match protocol rtp video

policy-map POLICY-VIDEO

class VIDEO

set dscp af41

interface GigabitEthernet1/0/1

service-policy output POLICY-VIDEO

end


2. VLAN Configuration and Inter-VLAN Routing

Purpose: Segment network into logical sections and enable communication between VLANs without an external router.

Configure VLANs on both 3650 and 9200:
bash
Copy code
configure terminal

vlan 10

name Data

vlan 20

name Voice

interface Vlan10

ip address 192.168.10.1 255.255.255.0

interface Vlan20

ip address 192.168.20.1 255.255.255.0

ip routing

end


3. Access Control Lists (ACLs)

Purpose: Enhance security by controlling the flow of traffic into and out of the network.

Configure ACLs on Catalyst 3650:
bash
Copy code
ip access-list extended BLOCK-WEB

deny tcp any any eq www

permit ip any any

interface GigabitEthernet1/0/2

ip access-group BLOCK-WEB in

end


Configure ACLs on Catalyst 9200: Use similar commands but take advantage of the 9200's capacity to handle more complex and larger number of ACL entries:
bash
Copy code
ip access-list extended SECURE-TRAFFIC

deny ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255

permit ip any any

interface GigabitEthernet1/0/2

ip access-group SECURE-TRAFFIC in

end


4. StackWise Configuration

Purpose: Increase system redundancy and scalability by connecting multiple switches to operate as a single unit.

StackWise on Catalyst 3650:
bash
Copy code
switch 1 priority 15

switch 2 priority 14


StackWise-320 on Catalyst 9200: Enhanced stacking capability:
bash
Copy code
switch 1 priority 15

switch 2 renumber 3

switch 3 priority 14


5. Security Enhancements

Purpose: Improve network security by implementing advanced security features.

Security on Catalyst 3650: Configure port-security and Dynamic ARP inspection:
bash
Copy code
interface GigabitEthernet1/0/3

switchport port-security maximum 2

switchport port-security violation restrict

ip arp inspection limit rate 100


Security on Catalyst 9200: Implement MACsec for encryption between switches:
bash
Copy code
macsec network-link

mka pre-shared-key key-chain MYKEYCHAIN

interface GigabitEthernet1/0/3

macsec replay-protection


Conclusion

Both the Cisco Catalyst 3650 and 9200 series switches offer a range of advanced configurations to support complex, high-performance network environments. By leveraging these configurations, network administrators can ensure their networks are optimized for both performance and security, catering to the evolving needs of modern business environments.

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