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 ?
What Are Alignment Errors? Understanding Alignment Errors Alignment errors occur when frames received do not end on an even number of octets and have a…
What is standard Ethernet frame size and MTU ?
Understanding Standard Ethernet Frame Size and MTU What is the Standard Ethernet Frame Size? The Ethernet frame size consists of several components, excluding the preamble:…
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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