© 2015 Mohamed Samir YouTube channel All rights reserved. www.mohamedsamir.comMohamed Samir Part III Working with Redundant Links.

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Presentation transcript:

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Part III Working with Redundant Links

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Traditional Spanning Tree Protocol

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Electing Designated Ports 1. Lowest root bridge ID 2. Lowest root path cost to root bridge 3. Lowest sender bridge ID 4. Lowest sender port ID spanning_tree1.swf

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Spanning-Tree Configuration & design

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Bottleneke To prevent the surprises Configure one switch as a root bridge in a determined fashion. Configure another switch as a secondary root bridge, in case of a primary root bridge failure.

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Protecting the Spanning Tree Protocol Topology

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Protecting Against Unexpected BPDUs Root port:closest to the root Blocking port:neither root nor designated ports Alternate port:These ports are identified for quick use by the STP UplinkFast feature. Forwarding port:These are ports with normal end-user connections Root Gurad:superior BPDU or one with a better bridge ID BPDU Guard Loop Guard

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir multiple Spanning Tree Protocol

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Multiple spanning tree

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Aggregating Switch Links

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Switch Port Aggregation with EtherChannel cont. distributing the physical links across multiple switches at each end of the EtherChannel. Cisco stackable Catalyst switches or chassis-based Virtual Switching System (VSS) switch families. This known as This is known as a multichassis EtherChannel (MEC).

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Part IV: Multilayer Switching

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Types of Interfaces Layer 2 Port Configuration Switch(config)# interface type member/module/number Switch(config-if)# switchport Layer 3 Port Configuration Switch(config)# interface type member/module/number Switch(config-if)# no switchport Switch(config-if)# ip address ip-address mask [secondary] SVI Port Configuration Switch(config)# interface vlan vlan-id Switch(config-if)# ip address ip-address mask [secondary]

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir CEF Overview Cisco Express Forwarding. A CEF-based multilayer switch consists of two basic functional blocks 1-Forwarding Information Base Reformat the routing table into an ordered list with the most specific route first FIB also contains the next-hop address for each entry FIB also contains host route (subnet mask ) most efficient routing lookup to directly connected or adjacent hosts.

© 2015 Mohamed Samir YouTube channel All rights reserved. Samir Configuring DHCP