Trace route group – Brocade Virtual ADX MIB Reference (Supporting ADX v03.1.00) User Manual
Page 140
128
Brocade Virtual ADX MIB Reference
53-1003312-01
Trace route group
Trace route group
This group uses the following method to detect routes used to reach a destination address.
1. The originating Layer 3 Switch sends a probe packet (a UDP packet) to the destination address
with a time-to-Live (TTL) value of 1.
2. The first Layer 3 Switch that receives this packet decrements the TTL, then drops the packet
and returns a ICMP packet to the originator.
3. The originating Layer 3 Switch records the route in the
4. The originating Layer 3 Switch sends a probe packet (a UDP packet) to the destination address
with a TTL value of 2.
5. The second Layer 3 Switch that receives this packet decrements the TTL, then drops the
packet and returns an ICMP packet to the originator.
6. The originating Layer 3 Switch records the route in
This procedure is repeated until the destination is reached or the maximum TTL is reached.
snRtUdpHelperAddrTypr
brcdIp.1.2.2.9.3.1.1.3
Syntax: Integer
Read-write
Indicates if the address is unicast or subnet broadcast address.
Valid values:
•
unicast(1)
•
broadcast(2)
snRtUdpHelperAddr
brcdIp.1.2.2.9.3.1.1.4
Syntax: IpAddress
Read-write
Shows the IP address of the UDP helper. UDP packets will be
forwarded to this address. It can be a helper address or a subnet
broadcast address, but it cannot be 255.255.255.255 or 0.0.0.0.
snRtUdpHelperRowStatus
brcdIp.1.2.2.9.3.1.1.5
Syntax: Integer
Read-write
Controls the management of the table rows. The values that can be
written are:
•
delete(3) – Delete the row
•
create(4) – Create a new row
•
modify(5) – Modify an existing row
If the row exists, then a SET with a value of create(4) returns a "bad
value" error. Deleted rows are removed from the table immediately.
The following values can be returned on reads:
•
noSuch(0) – No such row
•
invalid(1) – Row is inoperative
•
valid(2) – Row exists and is valid
Name, OID, and Syntax
Access
Description