The wife and I had a romantic day driving several hours to a small town to take Cisco exams. If this doesn't get me some action, I don't know what else to try.
Posts Tagged ‘ routing ’
CCIE R&S Written Materials
I'm scheduled to take the CCIE R&S Written exam on 10 July at Cisco Live, and I've been asked by a handful of people on Twitter exactly what materials I'm using. I figured it would be a good idea to let everyone know so that we all can determine whether or not I'm...
Tagging External Routes in EIGRP
EIGRP allows you to tag external routes. That is, any route redistributed into EIGRP can be tagged with a numeric descriptor from 0 to 4294967295. Aaron ConawayI like to lean my head to the left, hit it with the palm of my right hand, and document what knowledge falls out.Website - More Posts Download...
SLA Monitoring on the PIX/ASA
We're working on an data center design for a customer, and they've dropped in two ISP links – each with it's own managed router and public IP space off one of the Ethernet interfaces. The idea is that they want to use the Internet links in an active-passive setup without getting their own IP...
ROUTE Notes – Branch Office Routing
Let's see how Cisco wants us to connect our branch offices to the Enterprise.
ROUTE Notes – PBR and IP SLA
Let's study PBR and IP SLA. Yay!
Renesys Analysis of SuproNet Announcement Debacle
Earl Zmijewski of Renesys has an analysis of the SuproNet incident that took down a good bit of the Internet on Monday. From the blog: This single Czech provider announcing a single prefix caused a huge increase in the global rate of updates, peaking at 107,780 updates per-second. This peak occurred at 16:30:54 UTC,...
Cheat Sheets from Packetlife.net
My friend Josh over at blindhog.net has found a collection of cheat sheet gems for the network dude(tte). There’s sheets on BGP, OSPF, Subnetting, QoS, connector types, and more. Check it out. Cheat Sheets – Packetlife.net Aaron ConawayI like to lean my head to the left, hit it with the palm of my right...
Reliable Static Routing
Here’s a scenario I ran into long ago. We had several sites that had a frame relay link back to headquarters and a DSL line. Each link was terminated into a different router on a flat LAN with the users. The DSL was for Internet access, but also terminated a VPN as a backup...
BGP Route-reflectors
If you’re running iBGP, you may have run across this. What if you had three routers — R0, R1, R2 — that were running BGP under the same ASN, but R1 and R2 weren’t peered? Any routes coming from R1 would not show up on R2 and vice versa. iBGP, by standard, does not...
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