Configuring Forwarding Parameters - Dell PowerConnect B-RX Configuration Manual

7

Configuring forwarding parameters

Displaying the routes waiting for the next hop ARP to resolve
Use the following command to display which routes are waiting for the nexthop ARP to be resolved.
BigIron RX# show ip static route
IP Static Routing Table - 2 entries:
Type Codes: '*' - Installed, '+' - Waiting for ARP resolution
IP Prefix
*10.0.0.0/8
+20.1.1.0/24
*20.1.1.0/24
+20.1.1.0/24
20.1.1.0/24
Displaying ARP
When the next hop entry is a static route, enter the following command to display the route and the
timer value.
BigIron RX# show arp 10.43.14.1
Total number of ARP entries: 1
1
For additional information on the command syntax, refer to the syntax of the show arp command
under
Configuring forwarding parameters
The following configurable parameters control the forwarding behavior of the device:
•
•
•
•
All these parameters are global and thus affect all IP interfaces configured on the device.
To configure these parameters, use the procedures in the following sections.
Changing the TTL threshold
The TTL threshold prevents routing loops by specifying the maximum number of router hops an IP
packet originated by the device can travel through. Each device capable of forwarding IP that
receives the packet decreases the packet's TTL by one. If a device receives a packet with a TTL of 1
and reduces the TTL to zero, the device drops the packet.
The default TTL is 64. You can change the TTL to a value from 1– 255.
192
Next Hop
10.43.14.1
12.1.1.2
12.1.1.6
12.1.1.7
10.43.14.1
IP Address
10.43.14.1
ARP Debug Info
ArpIndex 0 InstId 16840 OutInt 2048 Vlan:0
HwMacIndex 0x0000ffff Router 0 PktCount 0
NumReq 0 ReplyTimeout 100
"Displaying the ARP cache"
Time-To-Live (TTL) threshold
Forwarding of directed broadcasts
Forwarding of source-routed packets
Ones-based and zero-based broadcasts
Interface Dis/Metric/Tag
1/1/0
1/1/0
1/1/0
5/1/0
MAC Address Type
00ab.cdef.0100 Dynamic
on page 222.
10/1/0
Age Port
5 mgmt1
BigIron RX Series Configuration Guide
Status
Valid
53-1001986-01