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Tag Archives: IP address
mpls: ospf sham link – why? and howto!
Hello everybody. Today I decided to write a post about OSPF SHAM LINK which is used in MPLS networks. Before giving a short explanation for what the sham link is used I will show you the topology as its a … Continue reading
Posted in MPLS
Tagged bgp, Border Gateway Protocol, Internet service provider, IP address, ldp, MP BGP, MPLS, mpls ip, mpls ldp, Multiprotocol Label Switching, mutual redistribution, Open Shortest Path First, PE router, redistribution, Router, sham, sham link, shamlink, Virtual Routing and Forwarding
18 Comments
mpls: ldp neighbor relationship with md5 password authentication – part 1
Hi everybody! Today a simple but sometimes time consuming topic, when it comes to troubleshooting. MPLS LDP neighbor relationships with password authentication. So we have quite a simple topology. Lets only use two neighboring routers because usually LDP is only … Continue reading
mpls: simple and advanced inter-vrf routing/leaking
Hello everybody! Today I will spend some time in demonstrating how to route between separate VRF instances on a local router. Special prerequisites: – Understanding of VRF lite Topology: Our topology exists of three routers. Quite simple for the beginning … Continue reading
Posted in MPLS, Uncategorized
Tagged bgp, Border Gateway Protocol, Enhanced Interior Gateway Routing Protocol, Fast Ethernet, Gateway, IP address, IS-IS, leaking, MP BGP, MPBGP, MPLS, mpls vpn, Open Shortest Path First, route-import, route-leaking, route-target export, Static routing, vrf, vrf lite
8 Comments
installation and configuration of cisco secure acs 5.3 (vmware) – part 3
Next part of the Secure ACS configuration in my case is the NTP server because it is important for logging. The NTP server configuration is quite simple but the acs service of the server has to be restartet once a … Continue reading
ip-routing: static routes to an interface instead of next-hop-addresses
Hi! Today I will have a look to a phenomenon that some people of you might already have experienced but werent able to explain it why it works. Its the feature proxy arp that comes into play when you have … Continue reading
frame-relay: back to back connections between routers
Today we have a simple scenario but with one small pitfall. We well establish a connection between two routers via frame-relay that are connected back to back. Here is the topology: Goal: – establish back to back connection and IP … Continue reading
REMINDER: administrative distances of routing protocols
ADs of the routing protocols: 0 – connected 1 – static 5 – eigrp summary 20 – ebgp 90 – eigrp 100 – igrp 115 – is-is 110 – ospf 120 – rip 140 – egp 160 – on demand … Continue reading
acl: challenge part 1 – odd and even access-list matches
ACL – Challenge Part 1 A) Write a standard ACL that matches all prefixes where the second OCTET is ODD. B) Write a standard ACL that matches all prefixes where the second OCTET is EVEN. A) Okay so we need … Continue reading
ebgp multipathing with underlying igp load-balancing
Hi! Today I will spend a little time with a scenario where we are simulating the connection to a service provider and peer with it via eBGP. One special thing here is that we will have some high availability and … Continue reading
:: Markus´ journey to the CCIE R&S :: 