Category Archives: Cisco
Redistribution of EIGRP and OSPF in a Hybrid Cisco/Dell Network
Check out my latest blog on networkpros.org where I demonstrate redistributing EIGRP routes into OSPF and redistributing OSPF routes into EIGRP in a mixed Cisco IOS and Dell FTOS environment. Of course only the Cisco switches are running EIGRP and … Continue reading
Posted in Cisco, Dell, Dell Force10, Labs, Networking, Protocols, Technology
Tagged 500, 6509, 7204VXR router, ASBR, Autonomous System Border Router, Catalyst 6500, Catalyst 6509, Cisco, Cisco 6500, Cisco 6509, Cisco 7200, Cisco 7200VXR, Cisco 7204, Cisco 7204VXR, Cisco 7204VXR router, Cisco Catalyst 6500, Cisco Catalyst 6509, default-metric, Dell Force10 S50N, Dell Force10 S60, Dell S50N, Dell S60, eighbor relationships, EIGRP into OSPF, EIGRP-OSPF Redistribution, External routes, Force10 S50N, Force10 S60, LSA Type-5, LSA Type-5 external routes, OSPF into EIGRP, Redistributing EIGRP, Redistributing EIGRP into OSPF, Redistributing OSPF, Redistributing OSPF into EIGRP, Redistribution in a Cisco EIGRP and Dell OSPF Environment, Routes redistributed in from another OSPF process, Routes redistributed in from BGP, S50N, S60, Type-5 external routes
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Default Port and VLAN Configuration/Behavior on Cisco IOS switches
In this short lab, I use two Cisco Catalyst 3550 switches [IOS 12.2(44)SE6] to demonstrate the default port and VLAN behavior on a Cisco switch running IOS. Below is the network diagram for this lab.
Posted in Cisco, Labs, Networking, Protocols, Technology
Tagged 3550, auto-created trunk link, Catalyst, Cisco 3550 default configuration, Cisco auto-created trunk link, Cisco Catalyst, Cisco Catalyst 3550, Cisco Catalyst 3550 default configuration, Cisco Catalyst default configuration, Cisco default configuration, Cisco default port configuration, Cisco default VLAN configuration, Cisco IOS, Cisco IOS switch, Cisco IOS switches, DNS broadcast, IOS default configuration, omain Name System (DNS) broadcast, omain Name System broadcast, switchport mode, switchport mode access, switchport mode dynamic desirable, switchport mode trunk
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Cisco vPC with Dell S4810 at ToR
Cisco’s vPC technology is similar to Dell’s VLT; it enables an access/leaf switch or server to have single LAG connecting up to two separate switches. This allows for an non-blocking, multipathing scenario. You can read more about Dell’s VLT technology … Continue reading
Posted in Cisco, Dell, Dell Force10, Labs, Network Architecture, Networking, Technology
Tagged 5548, Cisco, Cisco 5548UP, Cisco Nexus, Cisco Nexus 5548UP, Dell, Dell Force10 S4810, Dell S4810, Force10 S4810, mlag, Nexus, Nexus 5548UP, Nexus switch, port channel, S4810, S4810 switch, switch, Virtual Port Channel, vPC
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Understanding Cisco Nexus 2000 Series Fabric Extenders
Cisco Nexus 2000 Series Fabric Extenders (FEX) behave and can be considered as remote line cards for Cisco Nexus switches. The fabric extender acts as an extension to the parent Cisco Nexus switch fabric; the fabric extender and the parent … Continue reading
Posted in Cisco, Labs, Network Architecture, Networking, Technology
Tagged Cisco, Cisco distributed modular system, Cisco FEX architecture, Cisco Nexus, Cisco Nexus 2000, Cisco Nexus 2000 Fabric Extender, Cisco Nexus 2000 Fabric Extenders, Cisco Nexus 2000 FEX, Cisco Nexus 2000 Series Fabric Extenders, Cisco Nexus 2248PQ, Cisco Nexus 2248PQ Fabric Extender, Cisco Nexus 2248PQ FEX, Cisco Nexus 5548UP, Cisco Nexus Fabric Extender, Cisco Nexus FEX, Cisco Nexus switch, distributed modular system, east-west traffic, edge ports, etherchannel, EtherChannel Fabric Interface Connection, EtherChannel interface, Fabric Extender, FEX, FEX architecture, fex associate, Nexus 2248PQ, Nexus 2248PQ Fabric Extender, Nexus 2248PQ FEX, Nexus 5548UP, spanning tree edge ports, Static Pinning Fabric Interface Connection, switchport mode fex-fabric
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Cisco Nexus 5548UP – Configuring the Management Interface
This is a relatively simple blog on configuring the Cisco Nexus 5548UP management interface. When Cisco moved away from IOS to NX-OS for the operating system on their new Nexus datacenter switches, some of the commands and syntax for even … Continue reading
Posted in Cisco, Dell, Labs, Networking, Technology
Tagged Cisco, Cisco 5548UP, Cisco Nexus, Cisco Nexus 5548UP, Cisco Nexus default route, Cisco Virtual Routing and Forwarding, Cisco VRF, configure Cisco management interface, configure management interface, configure Nexus 5548UP management interface, configure Nexus management interface, Dell, Dell Force10 S4810, Dell PowerEdge, Dell PowerEdge R710, Dell PowerEdge R710 server, Dell S4810, Force10 S4810, Nexus 5548UP, Nexus default route, Nexus management interface, NX-OS, S4810, VDC, virtual device context, Virtual Routing and Forwarding, VRF, vrf context management
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Buying a Converged/FCoE Switch?
I felt the urge to write this article after receiving several inquiries about buying used Cisco Nexus 5010 and Nexus 5020 switches because they are available on some third-party site at large discounts – at least compared to the new … Continue reading
Posted in Brocade, Cisco, Dell, Juniper, Network Architecture, Networking, Protocols, Technology
Tagged Adapter-FEX, Brocade, Brocade 6720, Brocade 6730, Brocade converged switch, Brocade FCoE switch, Brocade VDX 6720, Brocade VDX 6730, Cisco, Cisco 5010, Cisco 5020, Cisco 5548UP, Cisco 5596UP, Cisco converged switch, Cisco FCoE switch, Cisco Nexus, Cisco Nexus 5010, Cisco Nexus 5020, Cisco Nexus 5548UP, Cisco Nexus 5596UP, Cisco Nexus switches, Converged switch, Data Center Bridging, DCB, Dell, Dell converged switch, Dell FCoE switch, Dell Force10, Dell S5000, Dell S5000 converged switch, Dell S5000 FCoE switch, Dell S5000 switch, FabricPath, FC, FCoE, FCoE-FC bridging, FCoE-FC bridging capabilities, Fibre Channel, Fibre Channel over Ethernet, Juniper, Juniper converged switch, Juniper FCoE switch, Juniper QFX3500, Nexus 5010, Nexus 5020, Nexus 5548UP, Nexus 5596UP, QFX3500, S5000 converged switch, S5000 FCoE switch, TRILL, VDX 6720, VDX 6730, VM-FEX
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Connecting Dell PowerEdge M I/O Aggregator with Dell Force10 S4810 and Cisco Nexus 5548UP
The Dell PowerEdge M I//O Aggregator is a slick blade switch that plugs into the Dell PowerEdge M1000e chassis and requires barely any configuration/networking knowledge. Think of it as an advanced layer 2 switch that provides expandable uplink connectivity. The … Continue reading
Posted in Cisco, Dell, Dell Force10, Force10 Networks, Labs, Network Architecture, Networking, Technology
Tagged 40 GbE, 5548 switch, 5548UP switch, Blade Chassis, blade switch, Chassis Management Controller, Cisco, Cisco Nexus, Cisco Nexus 5548, Cisco Nexus 5548UP, CMC, Dell, Dell Blade Server, Dell Blade Servers, Dell Force10, Dell Force10 S4810, Dell Force10 S4810 switch, Dell I/O Aggregator, Dell M1000e, Dell PowerEdge, Dell PowerEdge M I/O Aggregator, Dell PowerEdge M1000e, Dell S4810, Dell S4810 switch, Dell Server Blade Chassis, Force10, Force10 Networks, Force10 Networks S4810, Force10 Networks S4810 switch, Force10 S4810, Force10 S4810 switch, I/O Aggregator, I/O Aggregator blade switch, M1000e, Nexus 5548, Nexus 5548UP, Nexus 5548UP switch, PowerEdge, PowerEdge I/O Aggregator, PowerEdge I/O Aggregator blade switch, PowerEdge M1000e, S4810 switch, Server Blade Chassis, Twinax, Twinax breakout cable, Twinax breakout cables
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Multi-Area OSPF in a Mixed Cisco and Dell Force10 Environment
In this lab I use one Cisco 2621XM [IOS 12.4(2)T], one Cisco 2621 [IOS 12.3(18)], one Cisco 3660 [IOS 12.1(1)T], one Cisco 3640 [IOS 12.1(2)T], one Cisco 3550-24PWR-SMI [IOS 12.2(44)SE6], one Dell Force10 S60 [FTOS 8.3.3.7], and one Dell Force10 … Continue reading
Posted in Cisco, Dell Force10, Force10 Networks, Labs, Networking, Protocols, Technology
Tagged 2621, 2621XM, 3550-24PWR-SMI, 3640, 3660, ABR, Area Border Router, Area Border Routers, Cisco, Cisco 2621, Cisco 2621XM, Cisco 3550-24PWR-SMI, Cisco 3640, Cisco 3660, Dell, Dell Force10, Dell Force10 S50N, Dell Force10 S60, Force10, Force10 Networks, Force10 S50N, Force10 S60, multiarea ospf, Open Shortest Path First, OSPF, ospf neighbor, OSPF Neighbors, S50N, S60, Type 3 LSAs
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Gratuitous ARP and Basics of Connecting a Cisco IOS Switch with a Cisco CatOS Switch
Some of you may have an old Cisco Catalyst switch laying around that you may want to put to use. CatOS is the old Cisco operating system for Catalyst switches that predates IOS; it can still be found on some … Continue reading
Posted in Cisco, Labs, Networking, Protocols, Technology
Tagged 1000Base-SX, 1000Base-SX GBI, CAM, Catalyst 3548-XL, Catalyst 3550, Catalyst 4003, Catalyst C4000, Catalyst C4003, CatOS, Cisco, Cisco 1000Base-SX, Cisco 1000Base-SX GBIC, Cisco Catalyst, Cisco Catalyst 3548-XL, Cisco Catalyst 3550, Cisco Catalyst 4000, Cisco Catalyst 4003, Cisco Catalyst C4003, Cisco CatOS, Cisco GBIC, Cisco IOS, Cisco WS-X4012, Cisco WS-X4232-GB-RJ, Cisco WS-X4232-L3, delete configuration, Dell, Dell EqualLogic, Dell EqualLogic storage, EqualLogic, erase configuration, GBIC, Gratuitous ARP, ios, IXIA, MAC address, MAC address table, reset configuration, Supervisor Engine, Supervisor Engine 1, Supervisor Engine 2, Supervisor Engine I, Supervisor Engine II, Windows PC, wireshark, WS-C3548-XL-EN, WS-X4012, WS-X4232-GB-RJ, WS-X4232-L3
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Multi-Area OSPF – Redundancy, Route Summarization, and LSA Filtering
In this lab, all routers except for R4 and R5 are Cisco 3725 routers [IOS 12.4(15)T10]. Routers R4 and R5 are Cisco 7200 routers [IOS 12.4(24)T]. Below is the network diagram for this lab.
Posted in Cisco, Labs, Networking, Protocols, Technology
Tagged ABR, Area Border Router, Cisco, Cisco 3725, Cisco 3725 router, Cisco 7200, Cisco 7200 router, Multi-Area OSPF, networking, Open Shortest Path First, OSPF, OSPF ABR, OSPF Area Border Router, OSPF redundancy, OSPF summary route, redundancy, summary route
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