السلام عليكم ورحمة الله وبركاته
بالنسبه لاسئلة simulation
فسؤال ospf سهل راح يعطيك ثلاث راوترات موصوله مع بعض وفي area واحده وكل راوتر موصول مع شبكه محليه و في جهاز في كل شبكه محليه موصول ب console لراوتر ويقولك ان الراوتر الفلاني في مشكلة عدم قدراته على الاتصال مع باقي الراوترات
انت راح تروح لراوتر وتعمل
show run
then regist ospf process id
and check for network in area 1 and replace it with area 0
and check wildcard mask
and write
# router ospf X
no network x.x.x.x x.x.x.x area1
network x.x.x.x .x.x.x.x area 0
copy run start
هذا كل السؤال ospf سهل (H)
وبالنسبه لسؤال Sw-Ac3 فإن الاخوان eng_ayman Rawad_g جزاهم الله خيرا قد شرحوه في مشاركة ماضيه وهي كالتالي
Q.1.What happens when SwX is reconnected to the network and a trunk exists between the two switches?
الحل:
الخطوة الاولى نكتب الامر SW-AC3#sh vtp status
ونتاكد اولا من كلا السوتش لهم نفس VTP Domain name
الخطوة الثانية : لو ان كلا السوتش لهم نفسVTP Domain name نتاكد من السوتش الذى تم اعادة توصيله فى الوضع server او client وليس فى الوضع transparent
الخطوة الثالثة : ننظر الى configuration revsion no. فى كلا السوتشين فالسويتش الذى له رقم اعلى يكون هو الupdater للسوتش الثانى يعنى السوتش اللذى له الرقم الاعلى سوف يلغى كل الـ vlan اللى موجودة فى السوتش التانى ويستبدلها بالـ vlan بتعته . وانت من الاجابات تقدير تحدد الاجابه الصحيحة
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Step1.Type in the command <SW-AC3#show mac-address-table.This will give you the port on which the MAC address was leant by this switch
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Q3.To which port of Sw-Ac3 is router VLAN-R1 connected?
Step1.Type <Sw-Ac3#show cdp neighbor detail.This will provide the details of VLAN-R1 i.e. hostname,IP address,and IOS version.
Step2:Type <Sw-AC3#cdp neighbor.This will display the port (local interface)on which R1 is connected.
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Q4.What ports of switch Sw-Ac3 are operationg as trunks?
Step 1.Type <Sw-Ac3#show interfaces trunk.This will display all the trunk ports
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Q5.out of which port on Sw-Ac3 will an IP packet with destination address not on local LAN be forwarded.
Step1.The packet will be sent to the default-gateway.Hence type <Sw-Ac3#show running-config.Note the IP address of the default-gateway.
Step2.Now type <Sw-AC3#show cdp neighbor detail.This will provide ip address mapping to hostname.
Step 3:Type <Sw-AC3#show cdp neighbor.This will give the local interface associated with the hostname.
------------------------------------------------------------------------------------------------------- Q6.Which Which switch is the root bridge for vlan 1?
الحل الصحيح ( والسؤال دا جالى فى الاختبار وحليته كتالى ) يعنى هوا دا الحل الصحيح
الخطوة الاولى
نكتب الامر sh spanning-tree vlan 1
نلاحظ ناتج الامر سوف يعطى لنا المنفذ الواصل عليه ال root bridge
يعنى بعد تفيذ الامر السابق ستظهر البينات التالية ( على سبيل المثال )
root ID Priority 32769
address 000b.5fe0.7a80
cost 19
Port 4 ( fastethernet 4 )
fa0/1 Desg FWD
fa0/3 Desg FWD
***fa0/4 Root FWD
هنا نلاحظ ان الـ Root Bridge واصل على المنفذ fa0/4 يعنى مش محتاج اعمل الامر sh mac
الخطوة الثانية :
نكتب الامر sh cdp nei سوف يعطى لنا اسم الـroot switch والواصل على المنفذ fa0/4
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Q7.What address should be configured as the default-gateway for the host connected to
interface Fa0/4 of Sw-AC3?
Step1.Type <Sw-AC3#show vlan.This will display list of vlans and associated port.Based on the vlan no find out the default gateway (i.e
interface ip address of VLAN-R1 router corresponding to that vlan
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Q8. Out of which ports will frame with source mac-address 0010.5a0c.A086 and destination mac address 000a.8a47.0612 be forwarded (choose two)
Step1.Type <Sw-AC3# show mac-address-table.
Step2.In the output check if the dest. mac addresses mentioned above have been learnt by the switch.
If they are not then it will be flooded out on
all ports except the port on which it was recd (the port coressponding to source mac).If dest mac is present in the table it will be sent out on
the port on which the address was learnt(port coresponding to the address in the output of show command)
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Q 9.From which switch did Sw-AC3 receive the VLAN information?
Step1.Type <Sw-AC3#show vtp status>
Step2.The VTP message contains updater identity i.e one who has last updated the vlan config info.The IP address of the updater will be
displayed at the bottom i.e the updater of vlan info along with the time when it updated.It could also be Sw-AC3 itself.In that case the
updater identity will indicate as local.
Step3.Now type <Sw-AC#show cdp neighbor detail.This will provide the hostname corressponding to that IP
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