## Modify stored information about a CNI object

`client.NetworkInterconnects.CNIs.Update(ctx, cni, params) (*CNIUpdateResponse, error)`

**put** `/accounts/{account_id}/cni/cnis/{cni}`

Modify stored information about a CNI object

### Parameters

- `cni string`

- `params CNIUpdateParams`

  - `AccountID param.Field[string]`

    Path param: Customer account tag

  - `ID param.Field[string]`

    Body param

  - `Account param.Field[string]`

    Body param: Customer account tag

  - `CustIP param.Field[string]`

    Body param: Customer end of the point-to-point link

    This should always be inside the same prefix as `p2p_ip`.

  - `Interconnect param.Field[string]`

    Body param: Interconnect identifier hosting this CNI

  - `Magic param.Field[CNIUpdateParamsMagic]`

    Body param

    - `ConduitName string`

    - `Description string`

    - `Mtu int64`

  - `P2pIP param.Field[string]`

    Body param: Cloudflare end of the point-to-point link

  - `BGP param.Field[CNIUpdateParamsBGP]`

    Body param

    - `CustomerASN int64`

      ASN used on the customer end of the BGP session

    - `ExtraPrefixes []string`

      Extra set of static prefixes to advertise to the customer's end of the session

    - `Md5Key string`

      MD5 key to use for session authentication.

      Note that *this is not a security measure*. MD5 is not a valid security mechanism, and the
      key is not treated as a secret value. This is *only* supported for preventing
      misconfiguration, not for defending against malicious attacks.

      The MD5 key, if set, must be of non-zero length and consist only of the following types of
      character:

      * ASCII alphanumerics: `[a-zA-Z0-9]`
      * Special characters in the set `'!@#$%^&*()+[]{}<>/.,;:_-~`= |`

      In other words, MD5 keys may contain any printable ASCII character aside from newline (0x0A),
      quotation mark (`"`), vertical tab (0x0B), carriage return (0x0D), tab (0x09), form feed
      (0x0C), and the question mark (`?`). Requests specifying an MD5 key with one or more of
      these disallowed characters will be rejected.

### Returns

- `type CNIUpdateResponse struct{…}`

  - `ID string`

  - `Account string`

    Customer account tag

  - `CustIP string`

    Customer end of the point-to-point link

    This should always be inside the same prefix as `p2p_ip`.

  - `Interconnect string`

    Interconnect identifier hosting this CNI

  - `Magic CNIUpdateResponseMagic`

    - `ConduitName string`

    - `Description string`

    - `Mtu int64`

  - `P2pIP string`

    Cloudflare end of the point-to-point link

  - `BGP CNIUpdateResponseBGP`

    - `CustomerASN int64`

      ASN used on the customer end of the BGP session

    - `ExtraPrefixes []string`

      Extra set of static prefixes to advertise to the customer's end of the session

    - `Md5Key string`

      MD5 key to use for session authentication.

      Note that *this is not a security measure*. MD5 is not a valid security mechanism, and the
      key is not treated as a secret value. This is *only* supported for preventing
      misconfiguration, not for defending against malicious attacks.

      The MD5 key, if set, must be of non-zero length and consist only of the following types of
      character:

      * ASCII alphanumerics: `[a-zA-Z0-9]`
      * Special characters in the set `'!@#$%^&*()+[]{}<>/.,;:_-~`= |`

      In other words, MD5 keys may contain any printable ASCII character aside from newline (0x0A),
      quotation mark (`"`), vertical tab (0x0B), carriage return (0x0D), tab (0x09), form feed
      (0x0C), and the question mark (`?`). Requests specifying an MD5 key with one or more of
      these disallowed characters will be rejected.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cloudflare/cloudflare-go"
  "github.com/cloudflare/cloudflare-go/network_interconnects"
  "github.com/cloudflare/cloudflare-go/option"
)

func main() {
  client := cloudflare.NewClient(
    option.WithAPIToken("Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY"),
  )
  cni, err := client.NetworkInterconnects.CNIs.Update(
    context.TODO(),
    "182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e",
    network_interconnects.CNIUpdateParams{
      AccountID: cloudflare.F("account_id"),
      ID: cloudflare.F("182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e"),
      Account: cloudflare.F("account"),
      CustIP: cloudflare.F("192.168.3.4/31"),
      Interconnect: cloudflare.F("interconnect"),
      Magic: cloudflare.F(network_interconnects.CNIUpdateParamsMagic{
        ConduitName: cloudflare.F("conduit_name"),
        Description: cloudflare.F("description"),
        Mtu: cloudflare.F(int64(0)),
      }),
      P2pIP: cloudflare.F("192.168.3.4/31"),
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", cni.ID)
}
```

#### Response

```json
{
  "id": "182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e",
  "account": "account",
  "cust_ip": "192.168.3.4/31",
  "interconnect": "interconnect",
  "magic": {
    "conduit_name": "conduit_name",
    "description": "description",
    "mtu": 0
  },
  "p2p_ip": "192.168.3.4/31",
  "bgp": {
    "customer_asn": 0,
    "extra_prefixes": [
      "string"
    ],
    "md5_key": "md5_key"
  }
}
```