Blog Archives
Search Blog Archives
Category Archives: Troubleshooting
Automating VLAN Configuration on Dell FTOS Switches via GVRP
GARP VLAN Registration Protocol (GVRP) is a standards-based protocol defined in the IEEE 802.1Q specification that provides for automatic VLAN configuration on switches. The Generic Attribute Registration Protocol (GARP) is used by switches supporting GVRP to register/de-register attribute values such … Continue reading
Posted in Dell, Dell Force10, Labs, Networking, Protocols, Technology, Troubleshooting
Tagged 802.1q, automatic VLAN configuration, Cisco Virtual Trunnk Protocol, Cisco VTP, Cisco VTP transparent mode, Dell, Dell Force10 S50, Dell Force10 S50N, Dell Force10 S60, Dell Networking S60, Dell S50, Dell S50N, Dell S60, dynamic VLAN, dynamic VLAN creation, dynamic VLANs, Force10 S50, Force10 S50N, Force10 S60, FTOS, GARP, GARP VLAN Registration Protocol, Generic Attribute Registration Protocol, GVRP, GVRP and MSTP, GVRP and PVST, GVRP and STP, GVRP and VTP, GVRP Join, GVRP Leave, GVRP LeaveAll, GVRP or VTP, GVRP troubleshoot, GVRP troubleshooting, GVRP vs VTP, IEEE 802.1Q, protocol gvrp, S50, S50N, S60, STP, Transparent Mode, troubleshoot GVRP, troubleshooting GVRP, Virtual Trunnk Protocol, vlan, VLAN de-registration, VLAN registration, VTP, VTP transparent mode
Leave a comment
Dell PowerEdge M1000e – FlexAddressing
Let’s say you have a Dell PowerEdge M1000e chassis populated with Dell blade servers with CNAs. Let’s also assume you enable FCoE on the CNA and utilize it for LAN and SAN traffic. What if you were to use the … Continue reading
Posted in Dell, Dell Force10, Dell PowerEdge Blade Servers, Labs, Networking, Servers, Technology, Troubleshooting, Troubleshooting
Tagged Dell, Dell blade, Dell Blade Server, Dell M1000e chassis, Dell M1000e Chassis CMC, Dell M60 Blade server, Dell M620, Dell PowerEdge, Dell PowerEdge M1000e, Flex, FlexAddressing, FlexAddressing technology, FlexAddrress, M1000e, MAC address, PowerEdge, PowerEdge M1000e, virtual address, virtual MAC address, virtual World Wide Port Name, virtual WWPN, World Wide Port Name, WWPN, zoning
1 Comment
LACP and Trunking Between Juniper JunOS and Dell FTOS Switches
In this blog I demonstrate how to configure a LACP LAG and 8021.Q trunking between Juniper JunOS switches and Dell FTOS switches. I will utilize 2 x Juniper EX4200-48T switches [JunOS 11.1R6.4] and a Dell S60 switch [FTOS 8.3.3.9]. Below … Continue reading
Posted in Dell, Dell Force10, Juniper, Labs, Networking, Protocols, Technology, Troubleshooting
Tagged 11.1R6.4, 802.1ad, 802.1q, 802.3ad aggregate link, 8021.Q trunking, deactivate interfaces, Dell, Dell Force10, Dell Force10 S60, Dell FTOS, Dell FTOS switches, Dell S60, Dell Switches, EX4200, EX4200-48T, Juniper EX4200, Juniper EX4200-48T, Juniper JunOS, Juniper JunOS switch, Juniper JunOS switches, JunOS, JunOS 11.1R6.4, LACP, LACP and Trunking Between Juniper JunOS and Dell FTOS Switches, LACP LAG, LAG, show vlans, trunk, trunk link, Trunking
Leave a comment
Changing the Root Password on Juniper JunOS Switches
In this short blog, I show how to easily change the root password on Juniper JunOS [JunOS 11.1R6.4] switches. It’s important to note, on a switch reset to default configuration, you can easily log into the switch with just the … Continue reading
Posted in Juniper, Labs, Network Security, Networking, Technology, Troubleshooting
Tagged 'root-authentication'error, 11.1R6.4, change root password, configuration check-out failed, EX4200, EX4200-48T, Juniper EX4200, Juniper EX4200-48T, Juniper JunOS, Juniper JunOS switch, JunOS, JunOS 11.1R6.4, Missing mandatory statement, missing statements, root password, set root password
1 Comment
Configuring OSPF with Multiple Areas
In this lab, I use three Cisco 3725 routers [IOS 12.4(15)T10] to demonstrate how to setup OSPF with multiple Areas. Below is the network diagram for this lab.
Posted in Cisco, Labs, Networking, Protocols, Technology, Troubleshooting
Tagged Area, Areas, Cisco, Cisco 3725, Cisco 3725 router, Multiple Areas, Multiple OSPF Areas, OSPF, OSPF area, OSPF Areas, router
Leave a comment
Setup and Troubleshoot EIGRP
I discussed Enhanced Interior Gateway Routing Protocol (EIGRP) briefly in a prior blog, Load Balancing with EIGRP, however, in this lab I use two Cisco 3725 routers [IOS 12.4(15)T10] to demonstrate how to configure EIGRP; additionally, I’ll discuss some useful … Continue reading
OSPF Explained and Useful Troubleshooting Commands
Open Shortest Path First (OSPF) is an open standard link-state routing protocol that supports multiple equal-cost routes to the same destination (four by default). OSPF constructs a shortest path tree and then updates the routing table with the best paths. … Continue reading
Posted in Cisco, Labs, Networking, Protocols, Technology, Troubleshooting
Tagged ABRs, adjacency, area 0, Area Border Routers, AS, ASBR, Autonomous System, Autonomous System Border Router, backbone area, Backup Designated Router, BDR, Cisco, Cisco 2126XM, Cisco 2126XM router, Cisco IOS, cisco router, cost, Designated Router, Hello packets, Link State Advertisement, LSA, neighbor, Neighbors, Open Shortest Path First, OSPF, OSPF Adjacencies, OSPF area, OSPF Backup Designated Router, OSPF BDR, ospf cost, ospf database, OSPF Designated Router, OSPF Hello Packets, ospf neighbor, OSPF Neighbors, OSPF process, OSPF Router ID, ospf troubleshooting, router, Router ID, Shortest Path First, shortest path tree, SPF
3 Comments
Tech Tips – Check if your E-mail Server is Running [Video]
I created and uploaded this video to youtube back in 2009, but I thought it might be helpful for others if I post the link here. It’s just a simple video that shows you how you can use telnet to … Continue reading