Error message “%ATMPA-3-TXDMANOTFLUSHED: TX DMA not flushed
Question: Hey, I got error message on log, please guide me what would be a problem here. %ATMPA-3-TXDMANOTFLUSHED: TX DMA not flushed Answer:…
NSE and PSE on SONET interface
Question; Hi, I saw NSE and PSE counts are increasing big time on our SONET interface. My Cisco has 1 OC12 POS controller with 12.2…
Modifying Access list and Prefix list
Question: Modifying Access list and Prefix list Any one knows how to modify and update a HUGE access list and prefix list on Cisco router…
Many “runts” are being detect on Ethernet interface ?
Tweet Question: Many “runts” are being detect on Ethernet interface ? Answer: It could be duplex mismatching issue. First of call, Runts: These are…
What is Alignment Errors ?
Tweet Question : What is Alignment Errors ? Answer: I found the below information on Internet…. Alignment errors are a count of the number…
What is standard Ethernet frame size and MTU ?
Tweet Question: What is standard Ethernet frame size and MTU ? Answer: In my knowledge(not from Internet) Preamble is not calculated in frame size…
Ethernet pin assignment and Cable Tester
Tweet Question : hi i’m using a cable tester that looks like this: http://hongmei.en.alibaba.com/product/200168769/51179510/Cable_Tester/Cable_Tester_468.html upon troubleshooting a straight cat5 utp cable using the said device,…
Packet is not passing, if it is bigger than 72 byte ?
Tweet Question : I got Juniper router(M series), and we got GigabitEthernet service for ISP. We saw BGP dropped and no passing traffic since in…
Easy QoS 101 – QoS protocols
Tweet QoS(Qaulity of Service) protocols were developed since data network demands efficiency of data delivery. Well known QoS protocols are RSVP, IntServ, DiffServ, MPLS, SBM…
[OSPF Tips] Configuring OSPF
Tweet [ Configuring ] 1. Enabling an OSPF process using the router ospf command. 2. Assigning areas to the interfaces using the network command….
MTU size on MPLS
Tweet In somtime, we do see a latency on the network. Especially, receving bigger frame size or heavy traffic from Internet. It would be many…
How DIS is elected on ISIS protocol ?
Tweet The default L1 and L2 priority is 64 in Cisco routers, with a value range of 0-127. A value of 0 means the router…
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