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This chapter describes the function and displays the syntax for XNS commands. For more information about defaults and usage guidelines, see the corresponding chapter of the Network Protocols Command Reference, Part 3.
To define an extended XNS access list, use the extended version of the access-list global configuration command. To remove an extended access list, use the no form of this command.
access-list access-list-number {deny | permit} protocol [source-network[.source-host| access-list-number | Number of the access list. This is a decimal number from 500 to 599. |
| deny | Denies access if the conditions are matched. |
| permit | Permits access if the conditions are matched. |
| protocol | Number of an XNS protocol, in decimal. See the documentation accompanying your host's XNS implementation for a list of protocol numbers. |
| source-network | (Optional) Number of the network from which the packet is being sent. This is a 32-bit decimal number. A network number of -1 matches all networks.
You can omit leading zeros from the network number. Note that you enter the network number in decimal, and this number is expressed in decimal format in Cisco's configuration files and routing tables. However, the Cisco IOS software internally converts the network number into hexadecimal. This means, for instance, that a network analyzer will display the network number in hexadecimal. |
| source-host | (Optional) Host on source-network from which the packet is being sent. This is a 48-bit hexadecimal value represented as a dotted triplet of 4-digit hexadecimal numbers (xxxx.xxxx.xxxx). |
| source-network-mask | (Optional) Mask to be applied to source-network. The mask is a 32-bit decimal number. The mask must immediately be followed by a period, which must in turn immediately be followed by source-host-mask. |
| source-host-mask | (Optional) Mask to be applied to source-host. This is a 48-bit value represented as a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). Place ones in the bit positions you want to mask. |
| source-socket | Number of the socket from which the packet is being sent. This is a 16-bit decimal value. See the documentation accompanying your host's XNS implementation for a list of socket numbers. |
| destination-network | (Optional) Number of the network to which the packet is being sent. This is a 32-bit decimal number. A network number of -1 matches all networks.
You can omit leading zeros from the network number. Note that you enter the network number in decimal, and this number is expressed in decimal format in Cisco's configuration files and routing tables. However, the Cisco IOS software internally converts the network number into hexadecimal. This means, for instance, that a network analyzer will display the network number in hexadecimal. |
| destination-host | (Optional) Host on destination-network to which the packet is being sent. This is a 48-bit hexadecimal value represented as a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). |
| destination-network-mask | (Optional) Mask to be applied to destination-network. The mask is a 32-bit decimal number. The mask must immediately be followed by a period, which must in turn immediately be followed by destination-host-mask. |
| destination-host-mask | (Optional) Mask to be applied to destination-host. This is a 48-bit value represented as a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). Place ones in the bit positions you want to mask. |
| destination-socket | (Optional) Number of the socket to which the packet is being sent. This is a 16-bit decimal value. See the documentation accompanying your host's XNS implementation for a list of socket numbers. |
| pep | (Optional) Packet Exchange Protocol (PEP) type. PEP is a connectionless-oriented protocol that uses XNS Type 4 initial domain part (IDP) frames. |
To define a standard XNS access list, use the standard version of the access-list global configuration command. To remove a standard access list, use the no form of this command.
access-list access-list-number {deny | permit} source-network[.source-address| access-list-number | Number of the access list. This is a decimal number from 400 to 499. |
| deny | Denies access if the conditions are matched. |
| permit | Permits access if the conditions are matched. |
| source-network | Number of the network from which the packet is being sent. This is a 32-bit decimal number. You can omit leading zeros. A network number of -1 matches all networks.
Note that you enter the network number in decimal, and this number is expressed in decimal format in Cisco's configuration files and routing tables. However, the Cisco IOS software internally converts the network number into hexadecimal. This means, for instance, that a network analyzer will display the network number in hexadecimal. |
| source-address | (Optional) Host on source-network from which the packet is being sent. This is a 48-bit hexadecimal value represented as a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). |
| source-address-mask | (Optional) Mask to be applied to source-address. This is a 48-bit value represented as a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). Place ones in the bit positions you want to mask. |
| destination-network | (Optional) Number of the network to which the packet is being sent. This is a 32-bit decimal number. A network number of -1 matches all networks.
You can omit leading zeros from the network number. Note that you enter the network number in decimal, and this number is expressed in decimal format in Cisco's configuration files and routing tables. However, the Cisco IOS software internally converts the network number into hexadecimal. This means, for instance, that a network analyzer will display the network number in hexadecimal. |
| destination-address | (Optional) Host on destination-network to which the packet is being sent. This is a 48-bit hexadecimal value represented as a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). |
| destination-address-mask | (Optional) Mask to be applied to destination-address. This is a 48-bit value represented as a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). Place ones in the bit positions you want to mask. |
To check host reachability and network connectivity, use the ping privileged EXEC command.
pingTo check host reachability and network connectivity, use the ping user EXEC command.
ping xns address| xns | Specifies the XNS protocol. |
| address | Address of system to ping. |
To display the contents of the XNS fast-switching cache, use the show xns cache EXEC command.
show xns cacheTo display the status of the XNS interfaces configured in the Cisco IOS software and the parameters configured on each interface, use the show xns interface EXEC command.
show xns interface [type number]| type | (Optional) Interface type. It can be one of the following types: asynchronous, dialer, Ethernet (IEEE 802.3), loopback, null, serial, or tunnel. |
| number | (Optional) Interface number. |
To display the contents of the XNS routing table, use the show xns route EXEC command.
show xns route [network]| network | (Optional) Number of the network that the route is to. This is a 32-bit decimal number. You can omit leading zeros. |
To display information about the number and type of XNS packets transmitted and received by the Cisco IOS software, use the show xns traffic EXEC command.
show xns trafficTo apply a generic filter to an interface, use the xns access-group interface configuration command. To remove the access list, use the no form of this command.
xns access-group access-list-number| access-list-number | Number of the access list. All outgoing packets defined with either standard or extended access lists and forwarded through the interface are filtered by the entries in this access list. For standard access lists, access-list-number is a decimal number from 400 to 499. For extended access lists, access-list-number is a decimal number from 500 to 599. |
To select the type of encapsulation used on a Token Ring interface, use the xns encapsulation interface configuration command. To disable the encapsulation, use the no form of this command.
xns encapsulation {snap | ub | 3com}| snap | 802.2 LLC encapsulation. This is the default encapsulation type. Use this encapsulation type with IBM Token Ring networks. |
| ub | Ungermann-Bass encapsulation. |
| 3com | 3Com encapsulation. Use this encapsulation type when older 3Com Corporation products are present on the network. |
To flood broadcast packets whose destination address is -1.FFFF.FFFF.FFFF, use the xns flood broadcast allnets interface configuration command. To disable this type of flooding, use the no form of this command.
xns flood broadcast allnetsTo flood packets whose destinations address is 0.FFFF.FFFF.FFFF, use the xns flood broadcast net-zero interface configuration command. To disable this type of flooding, use the no form of this command.
xns flood broadcast net-zeroTo flood packets whose destination address is -1.specific-host, use the xns flood specific allnets interface configuration command. To disable this type of flooding, use the no form of this command.
xns flood specific allnetsTo forward packets of a specific XNS protocol to a helper address, use the xns forward-protocol global configuration command. To disable the forwarding of these packets, use the no form of this command.
xns forward-protocol protocol| protocol | Number of an XNS protocol, in decimal. See the documentation accompanying your host's XNS implementation for a list of protocol numbers. |
To receive RIP updates, use the xns hear-rip interface configuration command. To disable the receipt of RIP updates, use the no form of this command.
xns hear-rip [access-list-number]| access-list-number | (Optional) Number of the access list. This list defines the routes the Cisco IOS software is to learn through standard RIP. The list is applied to individual routes within the RIP packet, not to the address of the packet's sender. For standard access lists, access-list-number is a decimal number from 400 to 499. For extended access lists, access-list-number is a decimal number from 500 to 599. |
To forward broadcast packets to a specified server, use the xns helper-address interface configuration command. To disable this function, use the no form of this command.
xns helper-address network.host| network | Network on which the target XNS server resides. This is a 32-bit decimal number. |
| host | Host number of the target XNS server. This is a 48-bit hexadecimal value represented as a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). The host must be directly connected to one of the router's directly attached networks. A number of FFFF.FFFF.FFFF indicates all hosts on the specified network. |
To control which networks are added to the routing table, use the xns input-network-filter interface configuration command. To remove the filter from the interface, use the no form of this command.
xns input-network-filter access-list-number| access-list-number | Number of the access list. All incoming packets defined with either standard or extended access lists are filtered by the entries in this access list. For standard access lists, access-list-number is a decimal number from 400 to 499. For extended access lists, it is a decimal number from 500 to 599. |
To set the maximum number of paths the Cisco IOS software uses when sending packets, use the xns maximum-paths global configuration command. To restore the default value, use the no form of this command.
xns maximum-paths number| number | Maximum number of equal-cost paths from which the software chooses. It can be a number from 1 to 512. The default is 1. |
To enable XNS routing on a particular interface by assigning a network number to the interface, use the xns network interface configuration command. To disable XNS routing on an interface, use the no form of this command.
xns network number| number | Network number. This is a 32-bit decimal number. You can omit leading zeros. |
To control the list of networks included in routing updates sent out an interface, use the xns output-network-filter interface configuration command. To remove the filter from the interface, use the no form of this command.
xns output-network-filter access-list-number| access-list-number | Number of the access list. All outgoing packets defined with either standard or extended access lists are filtered by the entries in this access list. For standard access lists, access-list-number is a decimal number from 400 to 499. For extended access lists, it is a decimal number from 500 to 599. |
To add a static route to the XNS routing table, use the xns route global configuration command. To remove a route from the routing table, use the no form of this command.
xns route network network.host| network | Network to which you want to establish a static route. This is a 32-bit decimal number. You can omit leading zeros. |
| network.host | Router to which to forward packets destined for the specified network.
The argument network is a 32-bit decimal number. You can omit leading zeros. The argument host is the host number of the target router. This is a 48-bit value represented by a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). |
To enable XNS fast switching, use the xns route-cache interface configuration command. To disable fast switching, use the no form of this command.
xns route-cacheTo control the routers from which packets are accepted, use the xns router-filter interface configuration command. To remove the filters from the interface, use the no form of this command.
xns router-filter access-list-number| access-list-number | Number of the access list. All incoming packets defined with either standard or extended access lists are filtered by the entries in this access list. For standard access lists, access-list-number is a decimal number from 400 to 499. For extended access lists, it is a decimal number from 500 to 599. |
To enable XNS routing, use the xns routing global configuration command. To disable XNS routing, use the no form of this command.
xns routing [address]| address | (Optional) Host number of the router. This is a 48-bit value represented by a dotted triplet of four-digit hexadecimal numbers (xxxx.xxxx.xxxx). It must not be a multicast address.
If you omit address, the Cisco IOS software uses the address of the first IEEE-compliant (Token Ring, FDDI, or Ethernet) interface MAC address it finds in its interface list. The software uses the address 0123.4567.abcd for non-IEEE-compliant interfaces. |
To enable Ungermann-Bass Net/One routing, use the xns ub-emulation global configuration command. To disable Net/One routing and restore standard routing mode, use the no form of this command.
xns ub-emulationTo set the XNS routing update timers, use the xns update-time interface configuration command. To restore the default value, use the no form of this command.
xns update-time interval| interval | Interval, in seconds, at which XNS routing updates are sent. The minimum interval is 10 seconds, and the maximum is 2493644 seconds, which is about 29 days. The default is 30 seconds. |
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