office
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office [2023/04/18 08:38] – sysadm | office [2023/07/19 07:55] – sysadm | ||
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* Destination IP table: | * Destination IP table: | ||
* | * | ||
Line 248: | Line 247: | ||
* end-set | * end-set | ||
* ! | * ! | ||
+ | |||
+ | |||
+ | * display | ||
+ | * As path filter name: BTTB-RAMNA-AS-IN | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | |||
+ | |||
+ | * RP/ | ||
+ | * Tue Mar 14 19: | ||
+ | * interface TenGigE0/ | ||
+ | * 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: | ||
+ | * 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/ | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * no shutdown | ||
+ | |||
+ | ---------------spanning ------------------- | ||
+ | |||
+ | show running-config | i spann | ||
+ | no spanning-tree vlan 1565, | ||
+ | DHUTRCLSW-01# | ||
+ | no spanning-tree vlan 1565, | ||
+ | |||
+ | HUTRCLSW-01(config)# | ||
+ | |||
+ | ----------------------------------------Cisco Nexus L2 Switch port-channel configure ---switchport-- | ||
+ | |||
+ | * DHDHNCLSW-02# | ||
+ | * | ||
+ | * !Command: show running-config interface port-channel1 | ||
+ | * !Running configuration last done at: Wed Jul 19 12:58:46 2023 | ||
+ | * !Time: Wed Jul 19 13:53:30 2023 | ||
+ | * | ||
+ | * version 9.3(4) Bios: | ||
+ | * | ||
+ | * interface port-channel1 | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * DHDHNCLSW-02# | ||
+ | * DHDHNCLSW-02# | ||
+ | * | ||
+ | * !Command: show running-config interface Ethernet1/ | ||
+ | * !Running configuration last done at: Wed Jul 19 12:58:46 2023 | ||
+ | * !Time: Wed Jul 19 13:54:01 2023 | ||
+ | * | ||
+ | * version 9.3(4) Bios: | ||
+ | * | ||
+ | * interface Ethernet1/ | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * no shutdown | ||
+ | * | ||
+ | * DHDHNCLSW-02# | ||
+ | * DHDHNCLSW-02# | ||
+ | * | ||
+ | * !Command: show running-config interface Ethernet1/ | ||
+ | * !Running configuration last done at: Wed Jul 19 12:58:46 2023 | ||
+ | * !Time: Wed Jul 19 13:54:08 2023 | ||
+ | * | ||
+ | * version 9.3(4) Bios: | ||
+ | * | ||
+ | * interface Ethernet1/ | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * | ||
+ | * no shutdown | ||
+ | * | ||
+ | ---------------------- |
office.txt · Last modified: 2024/05/05 16:51 by sysadm