interface ip-int-name
no interface ip-int-name
config>service>vprn
Supported on all 7210 SAS platforms as described in this document
This command creates a logical IP routing interface for a VPRN. When created, attributes like an IP address and SAP can be associated with the IP interface.
This command creates and maintains IP routing interfaces within VPRN service IDs. The interface command can be executed in the context of a VPRN service ID. The IP interface created is associated with the service core network routing instance and default routing table. The typical use for IP interfaces created in this manner is for subscriber Internet access.
Interface names are case sensitive and must be unique within the group of IP interfaces defined by the config router interface and config service vprn interface commands. Interface names must not be in the dotted decimal notation of an IP address; for example, the name ‟1.1.1.1” is not allowed, but ‟int-1.1.1.1” is allowed. Show commands for router interfaces use either interface names or the IP addresses. Use unique IP address values and IP address names to maintain clarity. It could be unclear to the user if the same IP address and IP address name values are used. Although not recommended, duplicate interface names can exist in different router instances.
The available IP address space for local subnets and routes is controlled using the config router service-prefix command. The service-prefix command administers the allowed subnets that can be defined on service IP interfaces. It also controls the prefixes that may be learned or statically defined with the service IP interface as the egress interface. This allows segmenting the IP address space into config router and config service domains.
When a new name is entered, a new logical router interface is created. When an existing interface name is entered, the user enters the router interface context for editing and configuration.
By default, no IP interface names are defined within the system. All VPRN IP interfaces must be explicitly defined. Interfaces are created in an enabled state.
The no form of this command removes the interface and all the associated configuration. The interface must be administratively shut down before issuing the no interface command.
For VPRN services, the IP interface must be shut down before the SAP on that interface may be removed. VPRN services do not have the shutdown command in the SAP CLI context. VPRN service SAPs rely on the interface status to enable and disable them.
Specifies the name of the IP interface. Interface names must be unique within the group of defined IP interfaces for config router interface and config service vprn interface commands. An interface name cannot be in the form of an IP address. Interface names can be from 1 to 32 alphanumeric characters. If the string contains special characters (#, $, spaces, and so on), the entire string must be enclosed within double quotes.
If ip-int-name already exists within the service ID, the context is changed to maintain that IP interface. If ip-int-namealready exists within another service ID or is an IP interface defined within the config router commands, an error occurs and the context is not changed to that IP interface. If ip-int-name does not exist, the interface is created and the context is changed to that interface for further command processing.
address {ip-address/mask | ip-address netmask} [broadcast [all-ones | host-ones]
no address
config>service>vprn>if
Supported on all 7210 SAS platforms as described in this document
This command assigns an IP address, IP subnet, and broadcast address format to a VPRN IP router interface. Only one IP address can be associated with an IP interface.
An IP address must be assigned to each VPRN IP interface. An IP address and a mask are used together to create a local IP prefix. The defined IP prefix must be unique within the context of the routing instance. It cannot overlap with other existing IP prefixes defined as local subnets on other IP interfaces in the same routing context within the 7210 SAS.
The local subnet that the address command defines must be part of the services address space within the routing context using the config router service-prefix command. The default is to disallow the complete address space to services. When a portion of the address space is allocated as a service prefix, that portion can be made unavailable for IP interfaces defined within the config>router>interface context for network core connectivity with the exclude option in the config router service-prefix command.
The IP address for the interface can be entered in either CIDR (Classless Inter-Domain Routing) or traditional dotted-decimal notation. The show commands display CIDR notation and are stored in configuration files.
By default, no IP address or subnet association exists on an IP interface until it is explicitly created.
Use the no form of this command to remove the IP address assignment from the IP interface. When the no address command is entered, the interface becomes operationally down.
| Address | Administrative state | Operational state |
|---|---|---|
No address |
up |
down |
No address |
down |
down |
1.1.1.1 |
up |
up |
1.1.1.1 |
down |
down |
The operational state is a read-only variable, and the only controlling variables are the address and admin states. The address and admin states are independent and can be set independently. If an interface is in an adminstratively up state and an address is assigned, it becomes operationally up and the protocol interfaces and the MPLS LSPs associated with that IP interface are reinitialized.
Specifies the IP address of the IP interface. The ip-address portion of the address command specifies the IP host address that is used by the IP interface within the subnet. This address must be unique within the subnet and specified in dotted-decimal notation.
The forward slash is a parameter delimiter and separates the ip-address portion of the IP address from the mask that defines the scope of the local subnet. No spaces are allowed between the ip-address, the ‟/” and the mask-length parameter. If a forward slash is not immediately following the ip-address, a dotted-decimal mask must follow the prefix.
Specifies the subnet mask length when the IP prefix is specified in CIDR notation. When the IP prefix is specified in CIDR notation, a forward slash (/) separates the ip-address from the mask-lengthparameter. The mask length parameter indicates the number of bits used for the network portion of the IP address; the remainder of the IP address is used to determine the host portion of the IP address. A mask length of 32 is reserved for system IP addresses.
Specifies the subnet mask in dotted-decimal notation. When the IP prefix is not specified in CIDR notation, a space separates the ip-address from a traditional dotted-decimal mask. The mask parameter indicates the complete mask that is used in a logical ‟AND” function to derive the local subnet of the IP address. A mask of 255.255.255.255 is reserved for system IP addresses.
Specifies to overrides the default broadcast address used by the IP interface when sourcing IP broadcasts on the IP interface. If no broadcast format is specified for the IP address, the default value is host-ones, which indicates a subnet broadcast address. Use this parameter to change the broadcast address to all-ones or revert to a broadcast address of host-ones.
The broadcast format on an IP interface can be specified when the IP address is assigned or changed.
This parameter does not affect the type of broadcasts that can be received by the IP interface. A host sending either the local broadcast (all-ones) or the valid subnet broadcast address (host-ones) is received by the IP interface.
Keyword following the broadcast parameter that specifies the broadcast address used by the IP interface for this IP address is 255.255.255.255, also known as the local broadcast.
Keyword following the broadcast parameter that specifies that the broadcast address used by the IP interface for this IP address is the subnet broadcast address. This is an IP address that corresponds to the local subnet described by the ip-address and the mask-length or mask with all the host bits set to binary one. This is the default broadcast address used by an IP interface.
The broadcast parameter within the address command does not have a negation feature, which is usually used to revert a parameter to the default value. To change the broadcast type to host-ones after being changed to all-ones, the address command must be executed with the broadcast parameter defined.
[no] allow-directed-broadcasts
config>service>vprn>if
Supported on all 7210 SAS platforms as described in this document
This command controls the forwarding of directed broadcasts out of the IP interface.
A directed broadcast is a packet received on a local router interface destined for the subnet broadcast address on another IP interface. The allow-directed-broadcasts command on an IP interface enables or disables the transmission of packets destined for the subnet broadcast address of the egress IP interface.
When enabled, a frame destined for the local subnet on this IP interface is sent as a subnet broadcast out this interface. Care should be exercised when allowing directed broadcasts, because it is a well-known mechanism used for denial-of-service attacks.
When disabled, directed broadcast packets discarded at this egress IP interface are counted in the normal discard counters for the egress SAP.
By default, directed broadcasts are not allowed and are discarded at this egress IP interface.
The no form of this command disables the forwarding of directed broadcasts out of the IP interface.
no allow-directed-broadcasts
bfd transmit-interval [receive receive-interval] [multiplier multiplier] [echo-receive echo-interval] [type iom-hw]
no bfd
config>service>vprn>if
config>service>ies>if
Supported on all 7210 SAS platforms as described in this document
This command specifies the BFD parameters for the associated IP interface. If no parameters are defined, the default value are used.
The multiplier specifies the number of consecutive BFD messages that must be missed from the peer before the BFD session state is changed to down and the upper level protocols (OSPF, IS-IS, BGP) are notified of the fault.
See the 7210 SAS-Mxp, R6, R12, S, Sx, T Router Configuration Guide for information about the routing and MPLS protocols and features that can use BFD for protection on 7210 SAS platforms.
The no form of this command removes BFD from the associated IGP protocol adjacency.
no bfd
Sets the transmit interval for the BFD session.
Sets the receive interval for the BFD session.
Sets the multiplier for the BFD session.
Sets the minimum echo receive interval, in milliseconds, for the BFD session.
Specifies the IOM hardware type.
[no] local-proxy-arp
config>service>vprn>if
Supported on all 7210 SAS platforms as described in this document
This command enables local proxy ARP. When local proxy ARP is enabled on an IP interface, the system responds to all ARP requests for IP addresses belonging to the subnet with its own MAC address, and therefore becomes the forwarding point for all traffic between hosts in that subnet. When the local-proxy-arp command is enabled, ICMP redirects on the ports associated with the service are automatically blocked.
no local-proxy-arp
[no] loopback
config>service>vprn>if
Supported on all 7210 SAS platforms as described in this document
This command specifies that the associated interface is a loopback interface that has no associated physical interface. As a result, the associated interface cannot be bound to a SAP.
When using mtrace/mstat in a Layer 3 VPN context, the configuration for the VPRN should have a loopback address configured that has the same address as the core instance system address (BGP next hop).
[no] proxy-arp-policy policy-name [policy-name...(up to 5 max)]
config>service>vprn>if
Supported on all 7210 SAS platforms as described in this document
This command enables a proxy ARP policy for the interface.
The no form of this command disables the proxy ARP capability.
no proxy-arp
Specifies the export route policy name. Allowed values are any string up to 32 characters composed of printable, 7-bit ASCII characters. If the string contains special characters (#, $, spaces, and so on), the entire string must be enclosed within double quotes.
[no] remote-proxy-arp
config>service>vprn>if
Supported on all 7210 SAS platforms as described in this document
This command enables remote proxy ARP on the interface.
Remote proxy ARP is similar to proxy ARP. It allows the router to answer an ARP request on an interface for a subnet that is not provisioned on that interface. This allows the router to forward to the other subnet on behalf of the requester. To distinguish remote proxy ARP from local proxy ARP, local proxy ARP performs a similar function but only when the requested IP is on the receiving interface.
no remote-proxy-arp
secondary {ip-address/mask | ip-address netmask} [broadcast {all-ones | host-ones}] [igp-inhibit]
no secondary {ip-address/mask | ip-address netmask}
config>service>vprn>if
Supported on all 7210 SAS platforms as described in this document
This command assigns up to 64 secondary IP addresses to the interface, including the primary IP address. Each address can be configured in an IP address, IP subnet, or broadcast address format.
Specifies the IP address of the IP interface. The ip-address portion of the address command specifies the IP host address that is used by the IP interface within the subnet. This address must be unique within the subnet and specified in dotted-decimal notation.
The forward slash is a parameter delimiter that separates the ip-address portion of the IP address from the mask that defines the scope of the local subnet. No spaces are allowed between the ip-address, the "/" and the mask parameter. If a forward slash does not immediately follow the ip-address, a dotted decimal netmask must follow the prefix.
Specifies the subnet mask length when the IP prefix is specified in CIDR notation. When the IP prefix is specified in CIDR notation, a forward slash (/) separates the ip-address from the mask parameter. The mask parameter indicates the number of bits used for the network portion of the IP address; the remainder of the IP address is used to determine the host portion of the IP address. A mask length of 32 is reserved for system IP addresses.
Specifies the subnet mask in dotted-decimal notation. When the IP prefix is not specified in CIDR notation, a space separates the ip-address from a traditional dotted-decimal mask. The netmask parameter indicates the complete mask that is used in a logical ‟AND” function to derive the local subnet of the IP address. A netmask of 255.255.255.255 is reserved for system IP addresses.
Optional keyword to override the default broadcast address used by the IP interface when sourcing IP broadcasts on the IP interface. If no broadcast format is specified for the IP address, the default value is host-ones, which indicates a subnet broadcast address. Use this parameter to change the broadcast address to all-ones or revert to a broadcast address of host-ones.
The broadcast parameter within the address command does not have a negation feature, which is usually used to revert a parameter to the default value. To change the broadcast type to host-ones after being configured as all-ones, the address command must be executed with the broadcast parameter defined. The broadcast format on an IP interface can be specified when the IP address is assigned or changed.
This parameter does not affect the type of broadcasts that can be received by the IP interface. A host sending either the local broadcast (all-ones) or the valid subnet broadcast address (host-ones) is received by the IP interface
Keyword to specify that the secondary IP address should not be recognized as a local interface by the running IGP.
[no] static-arp ip-address ieee-mac-address
config>service>vprn>if
Supported on all 7210 SAS platforms as described in this document
This command configures a static ARP entry associating a subscriber IP address with a MAC address for the core router instance. This static ARP appears in the core routing ARP table. A static ARP can be configured only if it exists on the network attached to the IP interface. If an entry for a particular IP address already exists and a new MAC address is configured for the IP address, the existing MAC address is replaced with the new MAC address.
The no form of this command removes a static ARP entry.
Specifies the IP address for the static ARP in IP address dotted-decimal notation.
Specifies the 48-bit MAC address for the static ARP in the form aa:bb:cc:dd:ee:ff or aa-bb-cc-dd-ee-ff where aa, bb, cc, dd, ee and ff are hexadecimal numbers. Allowed values are any non-broadcast, non-multicast MAC and non-IEEE reserved MAC addresses.