Thread: Networking Questions

1. m, m ;ln
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Switch is a layer 2 device , works with mac address , faster than router , broadcasts the packets with in the network.when a switch is connected to a lan it broadcasts the packets to all the systems intially and learns the mac address of the pcs from their response builds up the mac address table.

So when a packet has to sent again to a particular pc say pc1,it wont broadcast to all the systems just it ll unicast ie, send the packet directly to the pc1.

Router is a layer 3 device capable of broadcasting packets out of a particular network as it has routing table where it stores the MAC and IP address of all the devices connect in the network.Using a router we can wave a path for packets for a network, get it filtered using access list etc....

Originally Posted by kumar_7144

Switch is a layer 2 device , works with mac address , faster than router , broadcasts the packets with in the network.when a switch is connected to a lan it broadcasts the packets to all the systems intially and learns the mac address of the pcs from their response builds up the mac address table.

So when a packet has to sent again to a particular pc say pc1,it wont broadcast to all the systems just it ll unicast ie, send the packet directly to the pc1.

Router is a layer 3 device capable of broadcasting packets out of a particular network as it has routing table where it stores the MAC and IP address of all the devices connect in the network.Using a router we can wave a path for packets for a network, get it filtered using access list etc....

thanks for that

LSA details in OSPF

how can you suggest me ,if i am learning sun solaris administrator what will be in future

Hi FTP=File Transfer Protocall

my self is jitendra kumar sinha and i am trying to provide the answer
1 what is ipsec vpn ans-vpn is explained as virtual private network.that is it is communication between two trusted n/w (site to site) and one trusted and one untrusted n/w now a vpn is created by two way 1 ipsec 2 ssl you are asking about ipsec vpnn in the ipsec vpn when there is comuncation between two diffrent vpn then through ip sec it provides securty of transmission of sective trafic over n/w such as internet ip sec provide following network security serveis
1 data confidentilay
2 data intergety
3 data orgin authatication
4 anti reply

2 what is ad
ad value is truthwitiness of routing inforfation which are sharening the informations
what is load balance over mpls
multi-protocol label switching (mpls) defines a mechanism for packet forwarding in network routers. It was originally developed to provide faster packet forwarding than traditional ip routing, although improvements in router hardware have reduced the importance of speed in packet fowarding. However, the flexibility of mpls has led to it becoming the default way for modern networks to achieve quality of service (qos), next generation vpn services, and optical signaling. Traditional ip networks are connectionless: when a packet is received, the router determines the next hop using the destination ip address on the packet alongside information from its own forwarding table. The router's forwarding tables contain information on the network topology. They use an ip routing protocol, such as ospf, is-is, bgp, rip or static configuration, to keep their information synchronized with changes in the network. Mpls also uses ip addresses, either v4 or v6, to identify end points and intermediate switches and routers. This makes mpls networks ip-compatible and easily integrated with traditional ip networks. However, unlike traditional ip, mpls flows are connection-oriented and packets are routed along pre-configured label switched paths (lsps).
How do u creat tunnel comand for enabling tunnel
pix(config)# ip pool local pool1 10.192.12.100-10.1.192.12.255
#vpngroup mypool address-pool pool1
# vpngroup mypool dnsserver x.x.x.x
# vpdngroup mypool split tunnel 100
#vpdn group mypooll wind-server x.x.x.x x.x.x.x
this is the processes to create the tunnel over pix what is eps and ah ah called authentication header.
ah-ah is a protocol that provides authentication. Of either all or part of the contents of a datagram. Through the addition of a header that is calculated, based on the values in the datagram.

Eps-is that eps or esp i know about esp not about eps

explain bet distace vector and link state protocol
the main difference distance vector and link state routing protocol is that in distance vector routing protocol whole routing table is forwarded to whole n/w where as in the link state protocol updated is always forwarded to it concern neighbor router this is called link state

adjacency a relationship between two network devices, e.g. Routers, which are connected by one media segment so that a packet sent by one can reach the other without going through another network device. The concept of adjacency is important in the exchange of routing information.

Originally Posted by mittra_ashish

Hi,
Here are few questions?

1. What is FTP & UDP?
2. What is the difference between switch & router?
3. As i know that DHCP works under a protocol in the name of "DORA". Can
anyone explain me about "DORA"?
4. Please explain me about the concept of "Kerboros" protocol & when i
works?

the main diffrence between switch and router is
router is l3 devise
switch is l2

switch have the single broadcast doman
router has the broadcast domain per interfce
switch is best in lan
router is based on wan
Thanks
jitendera sinha

Originally Posted by mittra_ashish

Hi,
Here are few questions?

1. What is FTP & UDP?
2. What is the difference between switch & router?
3. As i know that DHCP works under a protocol in the name of "DORA". Can
anyone explain me about "DORA"?
4. Please explain me about the concept of "Kerboros" protocol & when i
works?

5.Difference between windows Xp and Windows Vista?

What r the difference between windows xp and windows vista

Originally Posted by dinesh_mcse

What r the difference between windows xp and windows vista

Major difference b/w xp and vista is size,graphics,add-on feature like elemination of some feature and addition of new supporting motherboards.

DHCP (D)iscover
DHCP (O)ffer
DHCP (R)equest
DHCP (A)ck
Client makes a UDP Broadcast to the server about the DHCP discovery.

2) DHCP offers to the client.

3) In response to the offer Client requests the server.

4)Server responds all the Ip Add/mask/gty/dns/wins info along with the acknowledgement packet.

VLAN (virtual loca area network)
It is simply a logical way of grouping users on the network based on function irrespective of their geographical location.
It helps in enforcing security within a network.

this is venkat rangaraj. i realy glad to know the information about the netwoking side . can u give the total information about the networking . that means how it can be works, and ect.

The Switch ports are grouped to different Vlans, so that end devices connected to those switch ports can limit any broadcast (what they do repeatedly to find out one another's IP addresses)to themselves.

So, they are called Broadcast Domains.

very good tips from denarii systems If you really into networking and want to keep in deep study VPNS swl server QA and try to get a cisco certification you will be making 60-80ks a year . any question email me.

difference between switch,bridge,hub?