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Chapter 2
Scalability and Performance
Disabling Gratuitous ARP Requests
To maximize the performance of the router, disable gratuitous ARP requests, using the no ip
gratuitous-arp command
Example 2-9
Router(config)# no ip gratuitous-arp
Configuring a Virtual Template Without Interface-Specific Commands
If you configure a virtual template interface with interface-specific commands, the
Cisco 10000 series router does not achieve the highest possible scaling. To verify that the router does
not have interface-specific commands within the virtual template interface configuration, use the test
virtual-template <number> subinterface command.
Including interface-specific commands in a virtual template can limit PPP session scaling.
the interface-specific commands that prevent the Cisco 10000 series router from attaining the highest
possible PPP session scaling.
Table 2-7
Command
access-expression
asp
autodetect
bridge-group
bsc
bstun
carrier-delay
cdp
clock
compress
custom-queue-list
diffserv
down-when-looped
encapsulation
fair-queue
full-duplex
h323-gateway
half-duplex
OL-2226-23
(Example
2-9).
Disabling Gratuitous ARP Requests
Interface-Specific Commands That Prevent PPP Scaling
Function
Builds a bridge Boolean access expression.
Asynchronous Port (ASP) subcommands.
Autodetects encapsulations on serial interfaces.
Transparent bridging interface parameters.
Binary Synchronous Communications (BSC)
interface subcommands.
Block Serial Tunnel (BSTUN) interface
subcommands.
Specifies delay for interface transitions.
Cisco Discovery Protocol (CDP) interface
subcommands.
Configures the serial interface clock.
Sets the serial interface for compression.
Assigns a custom queue list to an interface.
Differentiated Services (diffserv) for
provisioning.
Forces a looped serial interface down.
Sets the encapsulation type for an interface.
Enables fair queuing on an interface.
Configures full-duplex operational mode.
Configures the H.323 Gateway.
Configures half-duplex and related commands.
Configuring the Cisco 10000 Series Router for High Scalability
Cisco 10000 Series Router Software Configuration Guide
Table 2-7
lists
2-11
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Troubleshooting
