Currently, the SID transposition algorithm implemented in bgpd handles
incorrectly the SRv6 locators with function length greater than 20 bits.
To prevent issues, we currently limit the function length to 20 bits.
This limit will be removed when the bgpd SID transposition is fixed.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
According to RFC 8986, the SRv6 SID length cannot exceed 128 bits. This
commit ensures that the condition
`block_len + node_len + function_len + arg_len <= 128` is satisfied when
a new SRv6 locator is created.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
This commit adds SRv6 locator's block length, node length and argument
length to the output of the command
"show segment-routing srv6 locator NAME detail [json]".
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
This commit adds the SRv6 locator's block length, node length and
argument length to the SRv6 configuration.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
In the current implementation, an SRv6 locator only supports the
following structure:
* node-len = 24
* block-len = prefix-len - 24
* function-len = <configurable>
* argument-len = 0
This commit adds two optional arguments to the locator_prefix CLI
command: "node-len" and "block-len". These arguments allows an user to
configure the block length and node length of a SRv6 locator according
to the following logic:
* the node-len + block-len = prefix-len constraint must always be
satisfied;
* if node-len and block-len are both omitted, they are calculated as in
the current implementation (for backward compatibility reasons)
* if node-len is omitted, its value is computed as
prefix-len - block-len
* if block-len is omitted, its value is computed as
prefix-len - node-len
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
In order to set function length of SID freely, this PR relieves the
lower limitation of `func-bits`.
Signed-off-by: Ryoga Saito <ryoga.saito@linecorp.com>
Add default SRv6 Function Length for usecases like SRv6 L3VPN. The
default value (16) comes from the default Function length for SRv6
L3VPN in BGPd.
Signed-off-by: Ryoga Saito <ryoga.saito@linecorp.com>
There is a possibility that the same line can be matched as a command in
some node and its parent node. In this case, when reading the config,
this line is always executed as a command of the child node.
For example, with the following config:
```
router ospf
network 193.168.0.0/16 area 0
!
mpls ldp
discovery hello interval 111
!
```
Line `mpls ldp` is processed as command `mpls ldp-sync` inside the
`router ospf` node. This leads to a complete loss of `mpls ldp` node
configuration.
To eliminate this issue and all possible similar issues, let's print an
explicit "exit" at the end of every node config.
This commit also changes indentation for a couple of existing exit
commands so that all existing commands are on the same level as their
corresponding node-entering commands.
Fixes#9206.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
This commit is a part of #5853 works that add new clis to
configure SRv6 locator and its show commands.
Following clis are added on this commit.
vtysh -c 'conf te' \
-c 'segment-routing' \
-c ' srv6' \
-c ' locators' \
-c ' locator LOC1' \
-c ' prefix A::/64'
- "show segment-routing srv6 sid [json]"
- "show segment-routing srv6 locator [json]"
- "show segment-routing srv6 locator NAME detail [json]"
- "show runnning-config" (make it to print srv6 configuration)
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
This commit is a part of #5853 that add new cmd-node for SRv6 configuration.
This commit just add cmd-node and moving node cli only, acutual SRv6 config
command isn't added. (that is added later commit. of this branch)
new cli nodes:
* SRv6
* SRv6-locators
* SRv6-locator
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
