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MPLS

Hello studying new for me material on MPLS, and have a few questions on it: With my current understanding, to have mpls...
4 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
4 comments posted 14yrs posted by mark_cruzNOTFORSPAM

BPSK

There is discussion in another newsgroup in whether Manchester coding is, or is not, a form of BPSK. I usually consider...
6 comments posted 14yrs
posted by gah
6 comments posted 14yrs posted by gah

Where is generated the preamble?

Hi, I don't know if someone will see my message within spams. Is it the RS (reconciliation sublayer) that generates the...
2 comments posted 14yrs
posted by mhostettler
2 comments posted 14yrs posted by mhostettler

EFM frames on tagged port

Hello, Reading the specs I didn't completely understand if EFM, CFM or LLDP frames can be tagged or not. Specifically,...
0 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
0 comments posted 14yrs posted by mark_cruzNOTFORSPAM

Cisco Wireless -N Home Router WRT120N

Greetings, Out of the box, I set up the WRT120N router per instructions from the manual. Problems: 1. I need to power-c...
20 comments posted 14yrs
posted by rig_poster
20 comments posted 14yrs posted by rig_poster

MAC acl

Hello, some Cisco switches support MAC access lists on ingress traffic only. I'm trying to understand why it doesn't ma...
0 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
0 comments posted 14yrs posted by mark_cruzNOTFORSPAM

priority tagged frames

Hello I hear that priority-tagged frames, i.e. frames having 0x8100 ethertype AND valan id equal to 0, are considered u...
0 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
0 comments posted 14yrs posted by mark_cruzNOTFORSPAM

expected behavior of 802.1p mapping & schedulers

Hello, I'm trying to understand the expected behavior of a L2 switch with enabled QoS and 802.1p mapping, i.e. cos 0 is...
2 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
2 comments posted 14yrs posted by mark_cruzNOTFORSPAM

why we need 'bridge'

Hi, many layer2 ethernet equipment vendor, Cisco as example, have a concept (I don't really know if it is correct to ca...
6 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
6 comments posted 14yrs posted by mark_cruzNOTFORSPAM

switch port types (access, trunk, hybrid ..)

Hello, usually ports on the L2 switches (I don't know agbout L3) can be configured in the following modes: access, hybr...
0 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
0 comments posted 14yrs posted by mark_cruzNOTFORSPAM

MAC learning on switch

Hi All, I thought that MAC learning process is purely hardware, but wa recently told that in fact most decent hi-end L2...
8 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
8 comments posted 14yrs posted by mark_cruzNOTFORSPAM

Layer 3 Bit Error Tester

I need a testing device to bit error test optical ethernet ports on a router. Can someone suggest a device that can be...
0 comments posted 14yrs
posted by persistentone
0 comments posted 14yrs posted by persistentone

testing QoS with conventional PCs

Hello, what are the methods to test QoS functions (specifcally I'm interested in traffic shaping, scheduling) without p...
5 comments posted 14yrs
posted by mark_cruzNOTFORSPAM
5 comments posted 14yrs posted by mark_cruzNOTFORSPAM

Wanted - 3Com 3C505 Technical Reference Manual

Hi, I'm looking for the technical reference manual for 3Com's 3C505 Ethernet controller. This manual is mentioned in se...
0 comments posted 15yrs
posted by engel
0 comments posted 15yrs posted by engel