AMINUL ISLAM SHAMIM

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  • Destination IP table:
  • Name
  • IP
  • Expected Latency(ms)
  • EAST-BING
  • 13.107.21.200
  • 45
  • EAST-TWITTER
  • 117.18.232.102
  • 45
  • EAST-ZENLAYER
  • 129.227.71.27
  • 70
  • EAST-FAR-EDGECAST
  • 117.18.232.184
  • 45
  • INDIA-AKAMAI
  • 23.9.65.23
  • 40
  • WEST-UK-VIJU-CLOUD
  • 176.58.109.199
  • 185
  • WEST-USA-IMO
  • 192.12.31.101
  • 300
  • WEST-UK-TELEGRAM
  • 149.154.167.151
  • 185
  • WEST-UK-AMAZON
  • 54.239.34.171
  • 200
  • CLR LINK P2P check
  • <JASSDRCLR-01>display current-configuration interface 100GE0/10/0
  • #
  • interface 100GE0/10/0
  • description @@JASHORE-TO-PALTAN#siig_060922_063_nb#
  • undo shutdown
  • ip address 10.10.10.2 255.255.255.252
  • dcn
  • wavelength-channel 23
  • fec enhanced
  • #
  • return
  • <JASSDRCLR-01>
  • ———————-
  • <DHPALCLR-01>display current-configuration interface 100GE0/3/0
  • #
  • interface 100GE0/3/0
  • description @@PALTAN-TO-JESSORE#siig_060922_063_nb#
  • undo shutdown
  • ip address 10.10.10.1 255.255.255.252
  • dcn
  • wavelength-channel 23
  • fec enhanced
  • #
  • return

Wavelength of DWDM Optical Modules

https://support.huawei.com/enterprise/en/doc/EDOC1100074722/ceb1ac3c/configuring-the-channel-number-for-the-center-wavelength-of-dwdm-optical-modules

What Is A-FEC?

https://info.support.huawei.com/info-finder/encyclopedia/en/Adaptive+Forward+Error+Correction.html

DWDM linear network DWDM OLP network

  • <JASSDRPLR-03>display current-configuration | in 10.10.79.1
  • Info: It will take a long time if the content you search is too much or the string you input is too long, you can press CTRL_C to break.
  • peer 10.10.79.1 as-number 58717
  • peer 10.10.79.1 description @@ i-BGP with PALTAN-GGC-ROUTER @@
  • peer 10.10.79.1 enable
  • peer 10.10.79.1 route-policy DHK-GGC-IN import
  • peer 10.10.79.1 route-policy DHK-GGC-OUT export
  • peer 10.10.79.1 next-hop-local
  • peer 10.10.79.1 advertise-community
  • ip route-static 10.10.108.20 255.255.255.252 10.10.79.1 preference 60
  • <DHPALPLR-01>display current-configuration | in 157.119.185.24
  • Info: It will take a long time if the content you search is too much or the string you input is too long, you can press CTRL_C to break.
  • peer 157.119.185.24 as-number 58717
  • peer 157.119.185.24 description iBGP-JASSDRPLR-01
  • peer 157.119.185.24 connect-interface LoopBack1
  • peer 157.119.185.24 enable
  • peer 157.119.185.24 route-policy JASHORE-GGC-RTR import
  • peer 157.119.185.24 route-policy JASHORE-GGC-RTR-OUT export
  • peer 157.119.185.24 advertise-community
  • <DHPALPLR-01>
  • <DHPALPLR-01>dis
  • <DHPALPLR-01>display cur
  • <DHPALPLR-01>display current-configuration | in 10.10.79.1
  • Info: It will take a long time if the content you search is too much or the string you input is too long, you can press CTRL_C to break.
  • ip address 10.10.79.1 255.255.255.252
  • <DHPALPLR-01>
  • <DHPALPLR-01>display current-configuration | in 10.10.79.2
  • Info: It will take a long time if the content you search is too much or the string you input is too long, you can press CTRL_C to break.
  • peer 10.10.79.2 as-number 58717
  • peer 10.10.79.2 description TO-JSR-GGC-RTR
  • peer 10.10.79.2 enable
  • peer 10.10.79.2 route-policy JSR-GGC-IN import
  • peer 10.10.79.2 route-policy JSR-GGC-OUT export
  • peer 10.10.79.2 next-hop-local
  • peer 10.10.79.2 advertise-community
  • <DHPALPLR-01>
  • <DHPALPLR-01>
  • <DHPALPLR-01>dis
  • <DHPALPLR-01>display route-policy JSR-GGC-IN
  • Route-policy: JSR-GGC-IN
  • deny : 10 (matched counts: 0)
  • Match clauses:
  • if-match as-path-filter JSR-CLIENT-AS-BLOCK
  • permit : 20 (matched counts: 0)
  • Match clauses:
  • if-match ip-prefix FB-JSR-BLOCK
  • permit : 30 (matched counts: 44)
  • Match clauses:
  • if-match ip-prefix JSR-GGC-ROUTE
  • permit : 40 (matched counts: 3379)
  • Match clauses:
  • if-match community-filter JSR-GGC-COMMUNITY
  • permit : 50 (matched counts: 22)
  • Match clauses:
  • if-match community-filter PRIVATE-BLOCK
  • deny : 60 (matched counts: 0)
  • <DHPALPLR-01>display route-policy route-policy JASHORE-GGC-RTR
  • <DHPALPLR-01>display route-policy JASHORE-GGC-RTR
  • Route-policy: JASHORE-GGC-RTR
  • permit : 10 (matched counts: 21)
  • Match clauses:
  • if-match ip-prefix JASHORE-GGC-RTR
  • deny : 20 (matched counts: 2519)
  • [~DHPALPLR-01-route-policy]display this
  • #
  • route-policy JSR-GGC-IN deny node 10
  • if-match as-path-filter JSR-CLIENT-AS-BLOCK
  • #
  • route-policy JSR-GGC-IN permit node 20
  • if-match ip-prefix FB-JSR-BLOCK
  • #
  • route-policy JSR-GGC-IN permit node 30
  • if-match ip-prefix JSR-GGC-ROUTE
  • #
  • route-policy JSR-GGC-IN permit node 40
  • if-match community-filter JSR-GGC-COMMUNITY
  • #
  • route-policy JSR-GGC-IN permit node 50
  • if-match community-filter PRIVATE-BLOCK
  • #
  • route-policy JSR-GGC-IN deny node 60
  • #
  • return

3db attenuator

In some cases, the signal strength of the incoming signal may be too strong for the receiving device if the distance between the two devices is too short. Using an attenuator can help reduce the signal strength to a more appropriate level.

  • [~DHPALPLR-03]display optical-module base information interface 100GE0/10/1
  • Optical Transceiver Base Information
  • Card10-Port1 +
  • Factor/Module : QSFP28
  • Standard : 100GBASE-LR4
  • Vendor PN : 6C-QSFP28-LR4
  • Vendor Name : 6COM
  • Transceiver Maximal BW : 100G
  • Transceiver Mode : SingleMode
  • Connector Type : LC
  • WaveLength : 1295.56nm 1300.05nm 1304.58nm 1309.14nm
  • Transceiver Distance : 10km
  • Rx Optical Power Total : 8.29dBm
  • Tx Optical Power Total : 8.33dBm
  • Rx Power Warning Range : [-11.598, 4.500]dBm
  • Tx Power Warning Range : [-5.300, 4.500]dBm
  • Rx Optical Power[0] : 1.78dBm
  • Tx Optical Power[0] : 2.28dBm
  • Rx Optical Power[1] : 2.31dBm
  • Tx Optical Power[1] : 2.24dBm
  • Rx Optical Power[2] : 2.33dBm
  • Tx Optical Power[2] : 2.19dBm
  • Rx Optical Power[3] : 2.61dBm
  • Tx Optical Power[3] : 2.54dBm
  • The Optical Match Result : Normal
  • The Vendor Private Information : NA
  • [~DHPALPLR-03]display optical-module base information interface 100GE0/10/1
  • Optical Transceiver Base Information
  • Card10-Port1 +
  • Factor/Module : QSFP28
  • Standard : 100GBASE-LR4
  • Vendor PN : 6C-QSFP28-LR4
  • Vendor Name : 6COM
  • Transceiver Maximal BW : 100G
  • Transceiver Mode : SingleMode
  • Connector Type : LC
  • WaveLength : 1295.56nm 1300.05nm 1304.58nm 1309.14nm
  • Transceiver Distance : 10km
  • Rx Optical Power Total : 7.20dBm
  • Tx Optical Power Total : 8.33dBm
  • Rx Power Warning Range : [-11.598, 4.500]dBm
  • Tx Power Warning Range : [-5.300, 4.500]dBm
  • Rx Optical Power[0] : 0.67dBm
  • Tx Optical Power[0] : 2.27dBm
  • Rx Optical Power[1] : 1.31dBm
  • Tx Optical Power[1] : 2.24dBm
  • Rx Optical Power[2] : 1.34dBm
  • Tx Optical Power[2] : 2.20dBm
  • Rx Optical Power[3] : 1.38dBm
  • Tx Optical Power[3] : 2.53dBm
  • The Optical Match Result : Normal
  • The Vendor Private Information : NA
  • as-path-set CHINA-TELECOM-EQUINIX-AS-BLOCK
  • ios-regex '^12345_',
  • ios-regex '^32934_',
  • ios-regex '^15169_',
  • ios-regex '^174_',
  • ios-regex '^7473_',
  • ios-regex '^9498_',
  • ios-regex '^6453_',
  • ios-regex '^132602_',
  • ios-regex '^64074_',
  • ios-regex '^132884_',
  • ios-regex '^_'
  • end-set
  • !
  • display ip as-path-filter BTTB-RAMNA-AS-IN
  • As path filter name: BTTB-RAMNA-AS-IN
  • index: 10 permit ^17494$
  • index: 20 permit ^17494 63932_
  • index: 30 permit ^17494 133890_
  • index: 40 permit ^17494 45532_
  • index: 50 permit ^136759_
  • RP/0/RP0/CPU0:SINEQCR-01#show running-config interface TenGigE0/0/0/0
  • Tue Mar 14 19:54:47.955 BDT
  • interface TenGigE0/0/0/0
  • description @@ SMW5-LINK20-TO-UTTARA-AGG-VIA-EQUINIX-SG3-SMW5-BSCCL-SCL @@
  • ipv4 address 103.199.87.72 255.255.255.254
  • ipv6 address 2405:1500:0:2::33d/126
  • ipv6 enable
  • carrier-delay up 20000 down 20000
  • shutdown
  • load-interval 30
  • ipv4 access-group BTRC-NEW-BLOCK ingress
  • ipv4 access-group BTRC-NEW-BLOCK egress
  • !

The hold up time and hold down time can be used to prevent routing loops and to improve the stability of the network. For example, if a router has a hold up time of 10 seconds and a hold down time of 20 seconds, and it declares a neighbor down, it will wait 10 seconds for a hello packet from the neighbor before declaring the neighbor down. If the router does not receive a hello packet from the neighbor within 10 seconds, it will wait 20 seconds before trying to re-establish the neighbor adjacency. This helps to prevent routing loops from occurring if the neighbor is only temporarily unavailable.

The hold up time and hold down time can also be used to improve the stability of the network by preventing flapping. Flapping occurs when a routing loop is created and then broken, and then created again. This can happen if a router is constantly declaring neighbors down and then up again. The hold up time and hold down time can help to prevent flapping by preventing a router from declaring a neighbor down too quickly.

  • interface Ethernet1/21
  • description ICC-NIX_TO-ODF-1 T5 P12_iccc_160220_022_ic
  • switchport access vlan 777
  • spanning-tree guard root
  • switchport port-security
  • switchport port-security mac-address C4AD.3468.6AC2
  • no shutdown

—————spanning ——————-

show running-config | i spann no spanning-tree vlan 1565,1933,2389,2463,3029,3442,3826 DHUTRCLSW-01# show running-config | i spa no spanning-tree vlan 1565,1933,2389,2463,3029,3442,3826

HUTRCLSW-01(config)# no spanning-tree vlan 1467,1565,1933,2389,2463,3029,3442,3826

office.1689752935.txt.gz · Last modified: 2023/07/19 07:48 by sysadm