Here is the test topology:Host--->SW1--->vlanX--->CORE-Router--->SW2--->vlanY--->HostFrom switch 1 host, I can ping IP address 1.2.3.4 (example). I can ping it continuously from vlanX to vlanY - never fails On core router, the "show ip arp 1.2.3.4", ...
Forum Posts
Resolved! ISIS + Segement routing
HelloI worked for a carrier network ethernet, we have more than 80 nodes (Cisco NCS 5500 and ASR 920), all these nodes run ISIS/LDP/MPLS in order to deliver MEF services like E-LINE, E-ACCESS.I heard about segment-routing, I have setup a lab in order...
Hi all,I'm having some issues understanding the OSPF protocol and how it advertises networks. Let's say I enable OSPF on interface g0/0 with "ip ospf 1 area 0" command. What does this command do exactly, and how does it start advertising networks fro...
Resolved! Which version to upgrade to
We are hitting this bug on ASR 1006-X:https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu62879 But we are running the suggested release 17.03.05 which is neither in the affected or fixed releases. We suspect that it is affected but maybe bug isn't up...
Hi Guys I finally decided to take the last exam to get the CCNP certification, ENARSI, and I have 5 months to prepare it, I hope it is enough.My question is about how to practice troubleshooting and the different subjects included in the exams I work...
Gentlemen,We have a multi-vendor setup in our datacenter(Silverpeak for SDWAN and Cisco Nexus devices). What could be the reasons that we should deploy iBGP over OSPF within LAN in the data center? Thanks
Resolved! Dual SIM Configuration and Failover
Hallo,I have a C1126-8PLTEP ISR router with DUAL SIM capabilities. I would like to configure it such that I when the primary SIM fails, the secondary takes over. What is interesting is that I have created a controller profile for the primary interfac...
I can't ping my directly connected router from my switch and I can't figure out why. I'm just learning how to do all this stuff so please have mercy on me. This is in packet tracer btw. Here are my configs: Switch 1:Current configuration : 2623 bytes...
Hello,Looking for help in setting up ISR 4351. We have two locations. Each location has: 1. An ISR with 3 physical interfaces2. Have /30 from ISP1 (x.x.x.x/30) and ISP2 (y.y.y.y/30)3. Have /24 Class (z.z.z.z/24) from ARIN that we are dividing in hal...
HelloI want to configure ISIS protocol with metric based on delay or bandwidth+delay.I read a document which is not cisco official, below is the point that I saw: IS-IS uses an arbitrary cost for its metric. IS-IS additionally has threeoptional metri...
Question:In BGP I understand how to influence routing information comming from my peers. However, every example I have learned in the course was , dual-homed... However, now I stumble on this situation.I have two routers, both connected with two 'lin...
Hi all, I'm still getting to grips with Cisco so please bare with if this is simple or been asked before. I've been searching forums but can't seem to get it working still and it's driving me mad. I'm unable to ping the outside router (Endpoint - Cis...
If a 4321 router has a bandwidth limit of 50Mbps with a 100Mbps circuit does it just drop any traffic over 50Mbps?
What is mean by null route ?
So I have two ASR routers that I need to connect to two HA paired ASA's, routed mode. The ASA and ASRs are running EIGRP to pass routing info between them. A trunked interface on the ASA is connected to an ASR router interface, so it's L3 over L2. ...
