TroubleshootingNOCACTIVE

Troubleshoot Web Access

Troubleshooting akses web bermasalah: cek DNS domain, cek prefix bestpath dari border INTER/IIX, ubah policy-statement untuk reroute prefix, dan verifikasi web dapat diakses kembali.

TS-NOC-006Reviewer: —

Owner

SUPER_ADMIN

Last Updated

20 Sep 2026

Version

v1.0

Est. Time

—

File Asli & Lampiran

TROUBLESHOOT WEB ACCESS.docx1.5 MB TROUBLESHOOT WEB ACCESS.pdf1.6 MB

Troubleshoot Web Access

Cek ip add dari domain

bash

dig a <domain>
Ping domain :

Cek prefix dari border inter dan iixa. INTER

b. IIX

Kesimpulan

Path prefix 103.119.138.0/24 ada 3 jalur, jalur bestpath bermasalah. Dicoba pindah kea rah path kedua atau ketiga dengan cara menambah allow/accept term dari police-statemantt masing-masing upstream.contoh :

Kita pindahkan bestpath ke aarah path kedua via LNIX, maka police-statement dr-LNIX menjadi sperti ini. : Sebelum :

bash

[edit logical-systems BRD-IIX policy-options policy-statement dr-LNIX]
noc@Brd-Intl# show
term 1 {
from {
route-filter 0.0.0.0/0 exact;
route-filter 0.0.0.0/0 prefix-length-range /25-/32;
route-filter 8.8.8.0/24 exact;
route-filter 8.8.8.8/32 exact;
prefix-list-filter ip-private orlonger;
}
then reject;
}
term 2 {
from {
route-filter 0.0.0.0/0 prefix-length-range /8-/24;
}
then accept;
}

Sesudah

bash

[edit logical-systems BRD-IIX policy-options policy-statement dr-LNIX]
noc@Brd-Intl# show
term accept {
from {
route-filter 103.119.138.0/24 exact;
}
then {

local-preference 300;

accept;

bash

}
}
term 1 {
from {
route-filter 0.0.0.0/0 exact;
route-filter 0.0.0.0/0 prefix-length-range /25-/32;
route-filter 8.8.8.0/24 exact;
route-filter 8.8.8.8/32 exact;
prefix-list-filter ip-private orlonger;
}
then reject;
}
term 2 {
from {
route-filter 0.0.0.0/0 prefix-length-range /8-/24;
}
then accept;
}