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Cloud Enterprise Network:Custom route entries

Last Updated:Jun 25, 2026

You can add custom route entries to the route table of an Enterprise Edition transit router. For example, you can add a static route or a blackhole route to flexibly control network traffic.

Add a custom route entry (Enterprise Edition)

  1. Log on to the CEN console.

  2. On the CEN Instance page, click the ID of the CEN instance that you want to manage.

  3. Go to the Basic Information > Transit Router tab and click the ID of the transit router that you want to manage.

  4. On the details page of the transit router, click the Route Table tab.

  5. In the pane on the left, click the ID of the target route table. On the Route Entry tab, click Add Route Entry.

  6. In the Add Route Entry dialog box, set the parameters and click OK.

    Parameter

    Description

    Route Table

    The current route table is selected by default.

    Transit Router ID

    The current transit router is selected by default.

    Name

    Enter a name for the route entry.

    Destination CIDR

    Enter the destination CIDR block of the route entry. You can enter an IPv4 or IPv6 CIDR block, such as 192.168.10.0/24 or 240b:****:14::/64.

    Blackhole Route

    • Yes: Creates a blackhole route. All traffic to the specified destination is dropped.

    • No: You must specify a next hop for the route.

    Next Hop

    Select a next hop for the route.

    Description

    Enter a description for the route entry.

View route entries (Enterprise Edition)

  1. Log on to the CEN console.

  2. On the CEN Instance page, click the ID of the CEN instance that you want to manage.

  3. Go to the Basic Information > Transit Router tab and click the ID of the transit router that you want to manage.

  4. On the details page of the transit router, click the Route Table tab.

  5. In the pane on the left, click the ID of the target route table.

  6. On the Route Entry tab, view the route entries of the current route table.

    By default, the console displays only some properties of the route entries. To view all properties, click the 列表顶部-操作按钮-自定义列表项 icon in the upper-right corner of the route entry list and customize the displayed columns.

    Field

    Description

    Route entry ID/name

    The ID and name of the route entry.

    You can click the 编辑 icon next to the route entry ID to add or modify the name of a custom route entry.

    Destination CIDR Block

    The destination CIDR block of the route entry.

    Next Hop

    The network instance connection for the next hop.

    Type

    The type of the next hop.

    • Network Instance: The next hop is a network instance connection.

    • Blackhole: This is a blackhole route.

      All traffic that matches this route is dropped.

    Next hop resource ID/name

    The ID and name of the network instance resource for the next hop.

    Next hop resource type

    The type of the network instance resource for the next hop.

    • VPC

    • ECR

    • VPN

    • VBR

    • Transit Router

      A transit router.

    Route Type

    The type of the route entry.

    • Propagated Routes: The route is learned by the transit router.

    • Static Routes: The route is a custom route.

    Route Status

    The status of the route entry.

    • Available: The route entry is active.

    • Rejected: The route entry is inactive due to a route conflict. For more information about route conflicts, see Route priorities.

    • Prohibited: The route entry is disabled by a Version 1.0 routing policy in the current route table.

    • Standby or Candidate: A backup route that is used when the primary route is unavailable.

    • Suppressed: The route is a specific route and is suppressed because it is covered by an aggregate route configured on the peer of a cross-region connection. Only the aggregate route is active. The specific route is inactive.

    Route Property

    The properties of the route entry.

    You can click details to view route properties, such as AS Path, Community, and priority.

    Description

    The description of the route entry.

    You can click the 编辑 icon to add or modify the description of a custom route entry.

    Creation Time

    The timestamp when the custom route entry was created.

    Route source resource ID/name

    The ID and name of the resource that generated the route.

    Route Source Type

    The type of resource that generated the route.

    • VPC

    • ECR

    • VPN

    • VBR

    • Transit Router

      A transit router.

    Prefix List

    The ID of the prefix list that generated this route entry.

    To find a specific route entry, select a filter condition from the drop-down list above the route entry list, enter a value, and then start the search. The following filter conditions are supported: Destination CIDR block-Fuzzy match, Destination CIDR block-Longest prefix match, Destination CIDR block-Subnet match, Destination CIDR block-Supernet match, Destination CIDR block-Exact match, Route entry ID, and Route entry name.

View route entries (Basic Edition)

  1. Log on to the CEN console.

  2. On the CEN Instance page, click the ID of the CEN instance that you want to manage.

  3. Go to the Basic Information > Transit Router tab and click the ID of the transit router that you want to manage.

  4. On the details page of the transit router, click the Route Table tab.

  5. On the Route Entry tab, view the route entries in the current region.

    Field

    Description

    Destination CIDR Block

    The destination CIDR block of the route entry.

    Next Hop

    The network instance for the next hop.

    Type

    The type of the network instance for the next hop.

    • CCN: a Cloud Connect Network (CCN) instance.

    • VPC: a Virtual Private Cloud (VPC) instance.

    • VBR: a Virtual Border Router (VBR) instance.

    • BR: a transit router.

    • local_service: a system route.

    Route Type

    The type of the route entry.

    • Cloud Enterprise Network: a route learned by the transit router.

    • Custom: a user-defined route.

    • System: a route automatically added by the system.

    Status

    The status of the route entry.

    • Available: The route entry is active.

    • Rejected: The route entry is disabled by a Version 1.0 routing policy in the current route table.

      IPv6 route entries for a Basic Edition transit router are also rejected by default.

    • Conflict: The route entry is inactive due to a route conflict.

    • Standby: A backup route that is used when the primary route is unavailable.

    • Suppressed: The route is a specific route and is suppressed because it is covered by an aggregate route configured on the peer of a cross-region connection. Only the aggregate route is active. The specific route is inactive.

    Route Map

    The routing policy that the route entry matches.

    If the route entry matches a routing policy, you can click details to view the matched policy.

    Route Property

    The properties of the route entry.

    You can click details to view route properties, such as AS Path, Community, and priority.

    Region Out Route Map

    The routing policy that the route entry matches for advertisement to other regions.

    Region Out Status

    The status of the route entry for advertisement to other regions.

    • Available: The route entry can be advertised to other regions.

    • Prohibited: The route entry cannot be advertised to other regions.

Delete a custom route entry (Enterprise Edition)

  1. Log on to the CEN console.

  2. On the CEN Instance page, click the ID of the CEN instance that you want to manage.

  3. Go to the Basic Information > Transit Router tab and click the ID of the transit router that you want to manage.

  4. On the details page of the transit router, click the Route Table tab.

  5. In the pane on the left, click the ID of the target route table.

  6. On the Route Entry tab, find the route entry that you want to delete and click Delete in the Actions column.

  7. In the Delete Route Entry dialog box, confirm the route entry information and click OK.

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