About vijnaana47711

vijnaana47711 · 08-21-2019

Hello, I would like to know which data structure is used for maintaining timers associated with the mac address table entry aging.Any references also would help. Thank you,Vij

vijnaana47711 · 08-07-2019

Hi, I read some docs(BRKDCT-3101) on CISCO live which talks about multicast replication.Needed clarification on a few concepts: 1) There is an internal group id which is used and multiple (S,G) entries share the same group id. Does each mroute m...

vijnaana47711 · 06-19-2019

Hi FolksSince the vlan tag field is inserted between SA and type fields, how would one know whether an ethernet frame has vlan tag or not? Normally the type field comes after the SA field and we can determine the type easily, but with type field comi...

vijnaana47711 · 06-06-2019

Hi, I would like to know if a CISCO switch uses DMA (Direct memory access) to copy a control packet (e.g OSPF) or a packet for which there is no entry in FIB to CPU? If not how does it happen? I'm not familiar with the internal architecture/ packet ...

vijnaana47711 · 08-07-2019

Hi Giuseppe, Thank you for the reply. I was actually looking for some additional details.I found the picture in the attached file on the net.It shows the various blocks, but doesn't elaborate on how a route entry in MRIB gets mapped to a hardware ent...

vijnaana47711 · 06-20-2019

Hi Georg,I was referring to parsing in C code.Thanks

vijnaana47711 · 06-06-2019

Hi Scott, One quick question. On going through the docs I got upon EOBC, but it talks of half duplex communication between Supervisor card and LC. I wonder if there's another such channel in the reverse direction for the CPU punt? Thank you

vijnaana47711 · 06-06-2019

Thank you Scott!That's the kind of reference I was looking for.

vijnaana47711 · 06-06-2019

Hi Scott, Can PCIe be one such interface and is DMA still being used by modern switcheswith a switch fabric architecture? Thank you

Member Since	‎06-04-2019 12:31 AM
Date Last Visited	‎08-27-2019 06:58 AM
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Data structure for mac-address-table entry aging

Multicast replication

Parsing 802.1Q encapsulated Ethernet frame

ASIC <--->CPU packet flow

Re: Multicast replication

Re: Parsing 802.1Q encapsulated Ethernet frame

Re: ASIC <--->CPU packet flow

Re: ASIC <--->CPU packet flow

Re: ASIC <--->CPU packet flow