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Tag Archives: ccnp
Frame relay is a packet switching technology that emulates like a switch. Switch uses ARP broadcast to find out the mac address of the host so that switch can forward the frame to the destined switch port. Frame relay however … Continue reading
This protocol prevents bridging loop created by redundant links within switch network. STP calculation will make switch/es block its own port so that the switch path is one straight line and not a loop. This is perhaps the most confusing … Continue reading
I have connected two Cisco Catalyst 3560 switches together by a pair of fibre cables. No trunk was formed. The default interface configuration for Catalyst 3560 is dynamic auto, in Catalyst 3550 the default was dynamic desirable. Dynamic desirable is … Continue reading
Reference topology Refer to IPv6 Layer 3 topology. Reference explanation. While I was doing IPv6 redistribution from ripng to OSPFv3, I found that OSPFv3 routing table did not include the 2026::2:/122 network which is in the RIPng domain between DSW1 … Continue reading
R1#sh interfaces serial 0/0 Serial0/0 is up, line protocol is up Hardware is PowerQUICC Serial Description: This is a DCE to R2 Internet address is 10.0.1.1/24 MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload … Continue reading
*Mar 2 11:52:53.472: EIGRP: Received HELLO on Loopback1 nbr 10.1.1.1 *Mar 2 11:52:53.472: AS 100, Flags 0×0, Seq 0/0 idbQ 0/0 *Mar 2 11:52:53.472: EIGRP: Packet from ourselves ignored I made R1 advertise the route of the loopback1 interface, hello … Continue reading
Scenario: You are tasked to configure EIGRP routing among various departments. Loopback1 of R1 is Engineering, loopback2 of R2 is Marketing, loopback3 of R3 is Sales. All physical connections have already been installed as shown in this logical network diagram. … Continue reading