ISO 10030
Connectionless-Mode End System to Intermediate System Protocol
RD (Redirect)
Move the mouse pointer to any protocol field and press the left mouse button.
CONS ES-IS uses different PDU type with this structure:
1. A fixed part, used by all PDU types;
2. following protcol field depending on PDU type (not ENC, ESC, SRH).
Holding Time (2 bytes)
Protocol: ISO 10030 / CONS ES-IS
PDU Part: RD (Redirect)
Field: holding time
Length: 2 bytes
Contents: maximum precessing time.
The holding time indicates the maximum time an intermediate system (IS) may take to process the current PDU.
Address Mask Length (1 byte)
Protocol: ISO 10030 / CONS ES-IS
PDU Part: RD (Redirect)
Field: address mask length
Length: 1 byte
Contents: length of the following address mask.
Since ISO addresses and address masks vary in length, the current length must be indicated.
Address Mask (n bytes)
Protocol: ISO 10030 / CONS ES-IS
PDU Part: RD (Redirect)
Field: address mask
Length: n bytes
Contents: address mask.
Since ISO addresses and address masks vary in length, the current length must be indicated within the previous 'address mask length' field.
SNPA Mask Length (1 byte)
Protocol: ISO 10030 / CONS ES-IS
PDU Part: RD (Redirect)
Field: SNPA mask length
Length: 1 byte
Contents: length of the following SNPA mask length.
Since ISO SNPA masks vary in length, the current length must be indicated.
SNPA Mask (n bytes)
Protocol: ISO 10030 / CONS ES-IS
PDU Part: RD (Redirect)
Field: SNPA mask
Length: n bytes
Contents: SNPA mask.
Since ISO SNPA masks vary in length, the current length must be indicated within the previous 'SNPA mask length' field.
SNPA Address Length (1 byte)
Protocol: ISO 10030 / CONS ES-IS
PDU Part: RD (Redirect)
Field: SNPA address length
Length: 1 byte
Contents: length of the following SNPA address.
Since ISO SNPA addresses vary in length, the current length must be indicated.
SNPA Address (n bytes)
Protocol: ISO 10030 / CONS ES-IS
PDU Part: RD (Redirect)
Field: SNPA address
Length: n bytes
Contents: SNPA address.
Since ISO SNPA addresses vary in length, the current length must be indicated within the previous 'SNPA address length' field.