Filtering Routes Using the distribute-list Command

For RIP and EIGRP, the distribute-list command can be used to filter incoming and outgoing routing updates. The process is straightforward, with the distribute-list command referring to ACLs or prefix lists. With OSPF, the distribute-list command filters what ends up in the IP routing table, and on ...

PIM Sparse Mode

PIM sparse mode works the opposite way of dense mode. PIM dense mode assumes that all the multicast interfaces are interested in multicast packets, unless being told otherwise. In PIM sparse mode, the router assumes that none of the multicast inter-faces is interested in receiving multicast packets...

MSM Layer 3 Switching

The initial Layer 3 switching engine for the Catalyst 6000 family consisted of the Multi-layer Switch Model (MSM). Based on Catalyst 8510 technology, the MSM provides a router-on-a-stick configuration integrated into the Catalyst 6000 chassis. Therefore, the MSM brings the power of the 8510 to the ...

Viewing SDLC Status Information

You can get a lot of useful SDLC information simply by looking at the interface: Router>show int serial1 Serial1 is up, line protocol is up   Hardware is HD64570   Description: Connection to three remote SDLC devices   MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,  &nb...

EIGRP Neighborships

Like OSPF, EIGRP uses three major steps to achieve its goal of learning the best available loop-free routes: Step 1. Establish EIGRP neighbor relationships

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