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[deepdiver]

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Edited May 12, 2023 by deepdiver

[hmizou]

Hi ,

in 1.8 ,  i didnt understand the tag 12345 used  , i think is not mondatory since we didnt use this TAG to a post-filter . for me i will not use TAG for summary address in R24

FYI , i didnt pass last year, i didnt practice enough sec 2  .

good luck

[deepdiver]

On 5/11/2023 at 10:49 AM, hmizou said:

Hi ,

in 1.8 ,  i didnt understand the tag 12345 used  , i think is not mondatory since we didnt use this TAG to a post-filter . for me i will not use TAG for summary address in R24

FYI , i didnt pass last year, i didnt practice enough sec 2  .

good luck

 

de

Edited May 14, 2023 by deepdiver

[hmizou]

Hi EZZ ,

yes , im planning to book in mid-sep ,  good luck too .

for the TASK 1.8 , for exemple if the ospf  inject  10.6.0.0/15 in BGP process (without TAG)

lets see R61 :

R61 inject only his  loopback 10.6.255.61/32 in BGP :

chinesedumps-r61#show bgp vpnv4 unicast all | i 0.0.0.0             
 *>  10.6.255.61/32   0.0.0.0                  0         32768 i
chinesedumps-r61#

 

we didnt recieve the exact subnet from ISP , see below advertised routes from R21 .

chinesedumps-r21#show ip bgp neighbors 100.3.21.1 advertised-routes | i 10.6
 *>  10.6.0.0/15      10.2.10.2               20         32768 ?
chinesedumps-r21#

 

so i think while R61 , R62, R70 advertised only loopback /32 , and they recieve only subnet /15 , there is no loop in control plane.

thank you for your feedback , good luck EZZ.

 

 

 

[deepdiver]

Spoiler

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Edited May 12, 2023 by deepdiver