Juniper SRX100 Traceoptions Performance
I have a 50Mbit Internet connection here at home and I’m having a Juniper SRX100 routing it. I just noted that I did not remember to remove the traceoptions configuration and it was affecting the...
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Catalyst 6500 IOS 15.1SY and 12.2SX
Feel free to bash on Catalyst 6500 based on this post as well, I know there are plenty of you who like to complain about this old work horse On the other hand, there are also plenty of us who run...
View ArticleJuniper SRX100 Junos Upgrade Process
Upgrading Junos on Juniper SRX100: JTAC Recommended Junos Software Versions: http://kb.juniper.net/InfoCenter/index?page=content&id=KB21476&smlogin=true Junos downloads for SRX100:...
View ArticleIOS 15.1SY Product Bulletin and New BFD Features
As a continuation to my previous post about IOS 15.1SY and 12.2SX, here is the product bulletin for IOS 15.1SY (for Sup720 and Sup2T):...
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Cat6500 FEX, or Smart Install?
I was surprised when I got a broschure in Cisco Live London 2013 that said Catalyst 6500 is supposed to support FEXes (Fabric Extenders) in the future. Does it make sense? A FEX is a device that looks...
View ArticleCisco Nexus 7000 Features Available on Modules
In the Cisco Nexus 7000 series switches there are several features that are bound to the hardware, meaning that your module selection restricts the features you can run on the switch ports. Thus, here...
View ArticleConfiguring BGP Sessions in IPv6
My colleagues were faced with an IPv6 implementation case where the router IOS feature set prevented them from configuring the BGP sessions. I labbed something for them and thought this overall IPv6...
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Review: Sena Parani-SD1000 Bluetooth Serial Adapter
I have always disliked using serial console connection to a switch or other network device with my laptop. The serial cable just ties me to that particular place and device. Depending on the situation...
View ArticleJunos authentication-order Configuration
In Cisco IOS you usually configure RADIUS or TACACS+ authentication with local user database as a backup, and you explicitly define the “local” keyword to tell that the local database is used if...
View ArticleOriginating Default Route in OSPF in Junos
I have a Junos router (Juniper SRX) with the default route pointing to the ISP (IP and default route assigned by DHCP) and a pair of Cisco Nexus switches with OSPF routing between all the boxes. I...
View ArticleQSFP+ Specifics on Nexus 5500 and Nexus 6000 Series Switches
Some of you may be interested in QSFP+ connections with Cisco Nexus 5500 and Nexus 6000 series switches. The scope of this post is not to present all the different flavors of QSFP+ pluggables or all...
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Home Computing History
I did some inventory once again in my cabinets and found some remains of my previous computers and old accessories. The old hard disks are being wiped as I write this (IDE-USB adapter FTW!) so that I...
View ArticleHostname or Path? Does It Matter?
I was recently taken to a discussion: Should the online service or application name be included in the hostname or the path of the site address? The actual discussion went a bit differently but the...
View ArticleCat6500/6800 IOS 15SY Feature and Packaging Information
Have you ever wanted to find out what are the differences in Cisco Catalyst 6500/6800 IOS packages (or feature sets)? This is apparently the best source I’ve ever found: Cisco IOS Software Major...
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Cisco Nexus FEX Lineup
Cisco has had Fabric Extenders in their Nexus datacenter switch portfolio since 2009. Since there are various models and they all are still appearing in the datacenters here is a summary of all the...
View ArticleJuniper SRX Old and New DHCP, with Problems
At some point I tried to configure Juniper SRX100 with DHCPv6 server, with no luck. The configurations didn’t just work. I gave up at that time, but returned to the matter some days ago. I realized...
View ArticleSetting Up a Syslog Server
In the field of networking it is very useful to have a centralized location for your logs as the system itself (the network) is distributed. Syslog is the usual method of collecting the logs. There are...
View ArticleJuniper SRX Traffic Processing
Some pointers to documentation in juniper.net that describe the traffic processing in Juniper SRX platform: Juniper Networks Devices Processing Overview (Junos 12.1X47) Flow-Based Processing Feature...
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Juniper SRX IPsec LAN-to-LAN VPN Part 1
In this post I will show two flavours of configuring a LAN-to-LAN IPsec VPN tunnel with Juniper SRX: policy-based and route-based. I have been under impression that those ways are mutually exclusive so...
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Juniper SRX IPsec LAN-to-LAN VPN Part 2
This is the part 2 of my Juniper SRX IPsec LAN-to-LAN VPN posts. In part 1 we had a simple LAN-to-LAN VPN with only one subnet in each site. In this post we have two subnets in Their Site to illustrate...
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