Customer have issues with LAN. Customer do not want to spend money on new switches/routeres. Bottleneck – connection between datacenter switches and distribution/access level switches.
Problems description: low througput. No redundancy for access switches 1 & 2 for cases, when link from access witch to distribution switch fail.
Proposed solution: increase througput between DC switches and distibution level switches. Increase througput between distribution switches and access level switches. Introduce redundancy.
Initial schematic (fragment of network).
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Implemented solution schematic (fragment of solution).
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Solution description: Impement port-channel connection between DC switch 1 and distribution switch1. Implement port-channel connection between Distribution switch 1 anc access switches 1 & 2. Connect access switches 1 & 2 with port-channnel. Configure spanning tree, to make sure Distr switch will be root bridge.
Configuration fragments.
DC switch 1:
interface Port-channel14
description Port-Channel to Distr switch 1
interface Ethernet0/1
description Link to Distr switch 1
switchport
switchport mode trunk
channel-group 14 mode active
interface Ethernet0/2
description Link to Distr switch 1
switchport
switchport mode trunk
channel-group 14 mode active
interface Ethernet0/3
description Link to Distr switch 1
switchport
switchport mode trunk
channel-group 14 mode active
interface Ethernet0/4
description Link to Distr switch 1
switchport
switchport mode trunk
channel-group 14 mode active
Distr switch 1:
spanning-tree vlan 10-500 priority 28672
interface Port-channel14
description Port-Channel to DC switch 1
interface Port-channel56
description Port-Channel to DC switch 1
interface Port-channel78
description Port-Channel to DC switch 1
interface Ethernet0/1
description Link to DC switch 1
switchport
switchport mode trunk
channel-group 14 mode active
interface Ethernet0/2
description Link to DC switch 1
switchport
switchport mode trunk
channel-group 14 mode active
interface Ethernet0/3
description Link to DC switch 1
switchport
switchport mode trunk
channel-group 14 mode active
interface Ethernet0/4
description Link to DC switch 1
switchport
switchport mode trunk
channel-group 14 mode active
interface Ethernet0/5
description Link to acc switch 1
switchport
switchport mode trunk
channel-group 56 mode active
interface Ethernet0/6
description Link to acc switch 1
switchport
switchport mode trunk
channel-group 56 mode active
interface Ethernet0/7
description Link to acc switch 2
switchport
switchport mode trunk
channel-group 78 mode active
interface Ethernet0/8
description Link to acc switch 2
switchport
switchport mode trunk
channel-group 78 mode active
Acc switch 1
interface Port-channel12
description Port-Channel to Distr switch 1
interface Port-channel34
description Port-Channel to acc switch 2
interface Ethernet0/1
description Link to Distr switch 1
switchport
switchport mode trunk
channel-group 12 mode active
interface Ethernet0/2
description Link to Distr switch 1
switchport
switchport mode trunk
channel-group 12 mode active
interface Ethernet0/3
description Link to acc switch 2
switchport
switchport mode trunk
channel-group 34 mode active
interface Ethernet0/4
description Link to acc switch 2
switchport
switchport mode trunk
channel-group 34 mode active
Acc switch 2
interface Port-channel12
description Port-Channel to Distr switch 1
interface Port-channel34
description Port-Channel to acc switch 1
interface Ethernet0/1
description Link to Distr switch 1
switchport
switchport mode trunk
channel-group 12 mode active
interface Ethernet0/2
description Link to Distr switch 1
switchport
switchport mode trunk
channel-group 12 mode active
interface Ethernet0/3
description Link to acc switch 1
switchport
switchport mode trunk
channel-group 34 mode active
interface Ethernet0/4
description Link to acc switch 1
switchport
switchport mode trunk
channel-group 34 mode active