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internal flash volume appears to have failed which i'm assuming cannot be fixed but if you have a suggestion there I'd like to hear it.  I've moved on to trying usb flash disk for boot which works fine when commands are issued manually from rommon bu...

wayfaring by Level 1
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  • 8 replies
  • 0 Helpful votes

Hello, I have a small network based GRE-tunnels (IS-IS) When I add a new network device that should connect to this network using OSPF, the whole network and all GRE-tunnel goes down. Tunnels and network returns UP again after OSPF is turned from t...

I have depoloyed 2 catalyst 65k as a single entity VSS ; m getting the following error when saving the configration on the primary/local player. Dec  4 23:15:16.971: %PFREDUN-SW1-4-BOOTSTRING_INVALID: The bootfile s2t54-ipservicesk9-mz.SPA.151-2.SY2....

Free Bird by Level 1
  • 862 Views
  • 2 replies
  • 0 Helpful votes

Resolved! ACL question

Hello,    I have a question which pertains directly to access lists. I have a 3925 edge router and would like to block an external DDoS attack (attacking via port 123 [ntp]) to a specific server within our environment. All ntp attempts (dozens of att...

Finally persuaded and "forced" my work to move away from consumer grade Netgear router(the one you usually use at home) and use Cisco ISR.  I was recently hired to revamp network, etc. We have VMware/OpenStack environment with new people coming in co...

sendalot7 by Level 1
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  • 9 replies
  • 0 Helpful votes

How can I see what routes have been discarded by EIGRP due to the route being considered not loop-free or invalid for any other reason?  When I use "show ip eigrp topology all-links" it seems to show me only routes that are loop-free with valid succe...

tato386 by Level 6
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  • 2 replies
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Hi, Consider I have this scenario ISP1          ISP2   |                  |   |___rtr____| I would like to use ISP1 as primary and ISP2 as secondary. So i thought of using two static routes with higher metric. I also thought about using ip sla. Ho...